diff --git a/packages/rest-api/src/constants/bridgeable.ts b/packages/rest-api/src/constants/bridgeable.ts
index e0bbd61d80..1a9b25a99c 100644
--- a/packages/rest-api/src/constants/bridgeable.ts
+++ b/packages/rest-api/src/constants/bridgeable.ts
@@ -1,6 +1,7 @@
 import { BridgeableToken } from '../types'
 import { CHAINS } from './chains'
-import { ZeroAddress } from '.'
+
+const NativeTokenAddress = '0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE'
 
 export const GOHM: BridgeableToken = {
   addresses: {
@@ -796,16 +797,16 @@ export const NETH: BridgeableToken = {
 
 export const ETH: BridgeableToken = {
   addresses: {
-    [CHAINS.ETHEREUM.id]: ZeroAddress,
-    [CHAINS.OPTIMISM.id]: ZeroAddress,
-    [CHAINS.BOBA.id]: ZeroAddress,
+    [CHAINS.ETHEREUM.id]: NativeTokenAddress,
+    [CHAINS.OPTIMISM.id]: NativeTokenAddress,
+    [CHAINS.BOBA.id]: NativeTokenAddress,
     [CHAINS.CANTO.id]: '0x5FD55A1B9FC24967C4dB09C513C3BA0DFa7FF687',
-    [CHAINS.BASE.id]: ZeroAddress,
-    [CHAINS.ARBITRUM.id]: ZeroAddress,
+    [CHAINS.BASE.id]: NativeTokenAddress,
+    [CHAINS.ARBITRUM.id]: NativeTokenAddress,
     [CHAINS.DFK.id]: '0xfBDF0E31808d0aa7b9509AA6aBC9754E48C58852',
-    [CHAINS.BLAST.id]: ZeroAddress,
-    [CHAINS.SCROLL.id]: ZeroAddress,
-    [CHAINS.LINEA.id]: ZeroAddress,
+    [CHAINS.BLAST.id]: NativeTokenAddress,
+    [CHAINS.SCROLL.id]: NativeTokenAddress,
+    [CHAINS.LINEA.id]: NativeTokenAddress,
   },
   decimals: {
     [CHAINS.ETHEREUM.id]: 18,
@@ -832,7 +833,7 @@ export const ETH: BridgeableToken = {
 export const MOVR: BridgeableToken = {
   addresses: {
     [CHAINS.MOONBEAM.id]: '0x1d4C2a246311bB9f827F4C768e277FF5787B7D7E',
-    [CHAINS.MOONRIVER.id]: ZeroAddress,
+    [CHAINS.MOONRIVER.id]: NativeTokenAddress,
   },
   decimals: {
     [CHAINS.MOONBEAM.id]: 18,
@@ -852,7 +853,7 @@ export const AVAX: BridgeableToken = {
   addresses: {
     [CHAINS.MOONBEAM.id]: '0xA1f8890E39b4d8E33efe296D698fe42Fb5e59cC3',
     [CHAINS.KLAYTN.id]: '0xCd8fE44A29Db9159dB36f96570d7A4d91986f528',
-    [CHAINS.AVALANCHE.id]: ZeroAddress,
+    [CHAINS.AVALANCHE.id]: NativeTokenAddress,
     [CHAINS.DFK.id]: '0xB57B60DeBDB0b8172bb6316a9164bd3C695F133a',
     [CHAINS.HARMONY.id]: '0xb12c13e66AdE1F72f71834f2FC5082Db8C091358',
   },
@@ -909,7 +910,7 @@ export const WAVAX: BridgeableToken = {
 
 export const JEWEL: BridgeableToken = {
   addresses: {
-    [CHAINS.DFK.id]: ZeroAddress,
+    [CHAINS.DFK.id]: NativeTokenAddress,
     [CHAINS.HARMONY.id]: '0x72cb10c6bfa5624dd07ef608027e366bd690048f',
     [CHAINS.KLAYTN.id]: '0x30C103f8f5A3A732DFe2dCE1Cc9446f545527b43',
     [CHAINS.AVALANCHE.id]: '0x997Ddaa07d716995DE90577C123Db411584E5E46',
@@ -1158,7 +1159,7 @@ export const DAIe: BridgeableToken = {
 
 export const KLAY: BridgeableToken = {
   addresses: {
-    [CHAINS.KLAYTN.id]: ZeroAddress,
+    [CHAINS.KLAYTN.id]: NativeTokenAddress,
     [CHAINS.DFK.id]: '0x97855Ba65aa7ed2F65Ed832a776537268158B78a',
   },
   decimals: {
@@ -1194,7 +1195,7 @@ export const WKLAY: BridgeableToken = {
 
 export const MATIC: BridgeableToken = {
   addresses: {
-    [CHAINS.POLYGON.id]: ZeroAddress,
+    [CHAINS.POLYGON.id]: NativeTokenAddress,
     [CHAINS.DFK.id]: '0xD17a41Cd199edF1093A9Be4404EaDe52Ec19698e',
   },
   decimals: {
@@ -1230,7 +1231,7 @@ export const WMATIC: BridgeableToken = {
 
 export const FTM: BridgeableToken = {
   addresses: {
-    [CHAINS.FANTOM.id]: ZeroAddress,
+    [CHAINS.FANTOM.id]: NativeTokenAddress,
     [CHAINS.DFK.id]: '0x2Df041186C844F8a2e2b63F16145Bc6Ff7d23E25',
   },
   decimals: {
diff --git a/packages/rest-api/src/middleware/normalizeNativeTokenAddress.ts b/packages/rest-api/src/middleware/normalizeNativeTokenAddress.ts
new file mode 100644
index 0000000000..546c08136e
--- /dev/null
+++ b/packages/rest-api/src/middleware/normalizeNativeTokenAddress.ts
@@ -0,0 +1,18 @@
+import { Request, Response, NextFunction } from 'express'
+import { isAddress, getAddress } from 'ethers/lib/utils'
+
+import { NativeGasAddress, ZeroAddress } from '../constants'
+
+export const normalizeNativeTokenAddress = (addressFields: string[]) => {
+  return (req: Request, _res: Response, next: NextFunction) => {
+    for (const field of addressFields) {
+      const address = req.query[field]
+      if (typeof address === 'string' && isAddress(address)) {
+        const checksumAddress = getAddress(address)
+        req.query[field] =
+          checksumAddress === ZeroAddress ? NativeGasAddress : checksumAddress
+      }
+    }
+    next()
+  }
+}
diff --git a/packages/rest-api/src/routes/bridgeRoute.ts b/packages/rest-api/src/routes/bridgeRoute.ts
index 3ee858fcb3..01fccb708b 100644
--- a/packages/rest-api/src/routes/bridgeRoute.ts
+++ b/packages/rest-api/src/routes/bridgeRoute.ts
@@ -7,6 +7,7 @@ import { showFirstValidationError } from '../middleware/showFirstValidationError
 import { bridgeController } from '../controllers/bridgeController'
 import { isTokenSupportedOnChain } from '../utils/isTokenSupportedOnChain'
 import { checksumAddresses } from '../middleware/checksumAddresses'
+import { normalizeNativeTokenAddress } from '../middleware/normalizeNativeTokenAddress'
 
 const router = express.Router()
 
@@ -187,6 +188,7 @@ const router = express.Router()
  */
 router.get(
   '/',
+  normalizeNativeTokenAddress(['fromToken', 'toToken']),
   checksumAddresses(['fromToken', 'toToken']),
   [
     check('fromChain')
diff --git a/packages/rest-api/src/routes/bridgeTxInfoRoute.ts b/packages/rest-api/src/routes/bridgeTxInfoRoute.ts
index 4336711511..09f249b99b 100644
--- a/packages/rest-api/src/routes/bridgeTxInfoRoute.ts
+++ b/packages/rest-api/src/routes/bridgeTxInfoRoute.ts
@@ -8,6 +8,7 @@ import { bridgeTxInfoController } from '../controllers/bridgeTxInfoController'
 import { isTokenAddress } from '../utils/isTokenAddress'
 import { isTokenSupportedOnChain } from '../utils/isTokenSupportedOnChain'
 import { checksumAddresses } from '../middleware/checksumAddresses'
+import { normalizeNativeTokenAddress } from '../middleware/normalizeNativeTokenAddress'
 
 const router = express.Router()
 
@@ -123,6 +124,7 @@ const router = express.Router()
  */
 router.get(
   '/',
+  normalizeNativeTokenAddress(['fromToken', 'toToken']),
   checksumAddresses(['fromToken', 'toToken']),
   [
     check('fromChain')
diff --git a/packages/rest-api/src/routes/destinationTokensRoute.ts b/packages/rest-api/src/routes/destinationTokensRoute.ts
index f06ac9e4f6..a6e4c590d4 100644
--- a/packages/rest-api/src/routes/destinationTokensRoute.ts
+++ b/packages/rest-api/src/routes/destinationTokensRoute.ts
@@ -8,6 +8,7 @@ import { destinationTokensController } from '../controllers/destinationTokensCon
 import { isTokenAddress } from '../utils/isTokenAddress'
 import { isTokenSupportedOnChain } from '../utils/isTokenSupportedOnChain'
 import { checksumAddresses } from '../middleware/checksumAddresses'
+import { normalizeNativeTokenAddress } from '../middleware/normalizeNativeTokenAddress'
 
 const router = express.Router()
 
@@ -98,6 +99,7 @@ const router = express.Router()
 
 router.get(
   '/',
+  normalizeNativeTokenAddress(['fromToken']),
   checksumAddresses(['fromToken']),
   [
     check('fromChain')
diff --git a/packages/rest-api/src/routes/swapRoute.ts b/packages/rest-api/src/routes/swapRoute.ts
index ee65c015b0..8c050f3b2b 100644
--- a/packages/rest-api/src/routes/swapRoute.ts
+++ b/packages/rest-api/src/routes/swapRoute.ts
@@ -7,6 +7,7 @@ import { CHAINS_ARRAY } from '../constants/chains'
 import { isTokenAddress } from '../utils/isTokenAddress'
 import { isTokenSupportedOnChain } from '../utils/isTokenSupportedOnChain'
 import { checksumAddresses } from '../middleware/checksumAddresses'
+import { normalizeNativeTokenAddress } from '../middleware/normalizeNativeTokenAddress'
 
 const router = express.Router()
 
@@ -133,6 +134,7 @@ const router = express.Router()
  */
 router.get(
   '/',
+  normalizeNativeTokenAddress(['fromToken', 'toToken']),
   checksumAddresses(['fromToken', 'toToken']),
   [
     check('chain')
diff --git a/packages/rest-api/src/routes/swapTxInfoRoute.ts b/packages/rest-api/src/routes/swapTxInfoRoute.ts
index 2ffb03388f..093dc5686f 100644
--- a/packages/rest-api/src/routes/swapTxInfoRoute.ts
+++ b/packages/rest-api/src/routes/swapTxInfoRoute.ts
@@ -8,6 +8,7 @@ import { swapTxInfoController } from '../controllers/swapTxInfoController'
 import { isTokenAddress } from '../utils/isTokenAddress'
 import { isTokenSupportedOnChain } from '../utils/isTokenSupportedOnChain'
 import { checksumAddresses } from '../middleware/checksumAddresses'
+import { normalizeNativeTokenAddress } from '../middleware/normalizeNativeTokenAddress'
 
 const router = express.Router()
 
@@ -115,6 +116,7 @@ const router = express.Router()
  */
 router.get(
   '/',
+  normalizeNativeTokenAddress(['fromToken', 'toToken']),
   checksumAddresses(['fromToken', 'toToken']),
   [
     check('chain')
diff --git a/packages/rest-api/src/tests/bridgeRoute.test.ts b/packages/rest-api/src/tests/bridgeRoute.test.ts
index dcef8451ec..756089f50b 100644
--- a/packages/rest-api/src/tests/bridgeRoute.test.ts
+++ b/packages/rest-api/src/tests/bridgeRoute.test.ts
@@ -2,6 +2,8 @@ import request from 'supertest'
 import express from 'express'
 
 import bridgeRoute from '../routes/bridgeRoute'
+import { NativeGasAddress, ZeroAddress } from '../constants'
+import { USDC } from '../constants/bridgeable'
 
 const app = express()
 app.use('/bridge', bridgeRoute)
@@ -11,8 +13,8 @@ describe('Bridge Route with Real Synapse Service', () => {
     const response = await request(app).get('/bridge').query({
       fromChain: '1',
       toChain: '10',
-      fromToken: '0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48', // USDC on Ethereum
-      toToken: '0x0b2C639c533813f4Aa9D7837CAf62653d097Ff85', // USDC on Optimism
+      fromToken: USDC.addresses[1],
+      toToken: USDC.addresses[10],
       amount: '1000',
     })
     expect(response.status).toBe(200)
@@ -22,6 +24,37 @@ describe('Bridge Route with Real Synapse Service', () => {
     expect(response.body[0]).toHaveProperty('bridgeFeeFormatted')
   }, 15000)
 
+  it('should return bridge quotes for ZeroAddress', async () => {
+    const response = await request(app).get('/bridge').query({
+      fromChain: '1',
+      toChain: '10',
+      fromToken: ZeroAddress,
+      toToken: ZeroAddress,
+      amount: '10',
+    })
+    expect(response.status).toBe(200)
+    expect(Array.isArray(response.body)).toBe(true)
+    expect(response.body.length).toBeGreaterThan(0)
+    expect(response.body[0]).toHaveProperty('maxAmountOutStr')
+    expect(response.body[0]).toHaveProperty('bridgeFeeFormatted')
+  }, 15000)
+
+  it('should return bridge quotes for NativeGasAddress', async () => {
+    const response = await request(app).get('/bridge').query({
+      fromChain: '1',
+      toChain: '10',
+      fromToken: NativeGasAddress,
+      toToken: NativeGasAddress,
+      amount: '10',
+    })
+
+    expect(response.status).toBe(200)
+    expect(Array.isArray(response.body)).toBe(true)
+    expect(response.body.length).toBeGreaterThan(0)
+    expect(response.body[0]).toHaveProperty('maxAmountOutStr')
+    expect(response.body[0]).toHaveProperty('bridgeFeeFormatted')
+  }, 15000)
+
   it('should return 400 for unsupported fromChain, with error message', async () => {
     const response = await request(app).get('/bridge').query({
       fromChain: '999',
@@ -83,8 +116,8 @@ describe('Bridge Route with Real Synapse Service', () => {
     const response = await request(app).get('/bridge').query({
       fromChain: '1',
       toChain: '10',
-      fromToken: '0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48',
-      toToken: '0x0b2C639c533813f4Aa9D7837CAf62653d097Ff85',
+      fromToken: USDC.addresses[1],
+      toToken: USDC.addresses[10],
     })
     expect(response.status).toBe(400)
     expect(response.body.error).toHaveProperty('field', 'amount')
diff --git a/packages/rest-api/src/tests/bridgeTxInfoRoute.test.ts b/packages/rest-api/src/tests/bridgeTxInfoRoute.test.ts
index 35ff81f19a..822491f887 100644
--- a/packages/rest-api/src/tests/bridgeTxInfoRoute.test.ts
+++ b/packages/rest-api/src/tests/bridgeTxInfoRoute.test.ts
@@ -2,6 +2,7 @@ import request from 'supertest'
 import express from 'express'
 
 import bridgeTxInfoRoute from '../routes/bridgeTxInfoRoute'
+import { USDC } from '../constants/bridgeable'
 
 const app = express()
 app.use('/bridgeTxInfo', bridgeTxInfoRoute)
@@ -11,8 +12,8 @@ describe('Bridge TX Info Route', () => {
     const response = await request(app).get('/bridgeTxInfo').query({
       fromChain: '1',
       toChain: '137',
-      fromToken: '0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48', // USDC on Ethereum
-      toToken: '0x2791Bca1f2de4661ED88A30C99A7a9449Aa84174', // USDC on Polygon
+      fromToken: USDC.addresses[1],
+      toToken: USDC.addresses[137],
       amount: '1000',
       destAddress: '0x742d35Cc6634C0532925a3b844Bc454e4438f44e',
     })
@@ -79,8 +80,8 @@ describe('Bridge TX Info Route', () => {
     const response = await request(app).get('/bridgeTxInfo').query({
       fromChain: '1',
       toChain: '137',
-      fromToken: '0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48',
-      toToken: '0x2791Bca1f2de4661ED88A30C99A7a9449Aa84174',
+      fromToken: USDC.addresses[1],
+      toToken: USDC.addresses[137],
       destAddress: '0x742d35Cc6634C0532925a3b844Bc454e4438f44e',
     })
     expect(response.status).toBe(400)
@@ -91,8 +92,8 @@ describe('Bridge TX Info Route', () => {
     const response = await request(app).get('/bridgeTxInfo').query({
       fromChain: '1',
       toChain: '137',
-      fromToken: '0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48',
-      toToken: '0x2791Bca1f2de4661ED88A30C99A7a9449Aa84174',
+      fromToken: USDC.addresses[1],
+      toToken: USDC.addresses[137],
       amount: '1000',
       destAddress: 'invalid_address',
     })
diff --git a/packages/rest-api/src/tests/destinationTokensRoute.test.ts b/packages/rest-api/src/tests/destinationTokensRoute.test.ts
index 4fe40a7a62..a083741ffa 100644
--- a/packages/rest-api/src/tests/destinationTokensRoute.test.ts
+++ b/packages/rest-api/src/tests/destinationTokensRoute.test.ts
@@ -2,6 +2,8 @@ import request from 'supertest'
 import express from 'express'
 
 import destinationTokensRoute from '../routes/destinationTokensRoute'
+import { NativeGasAddress, ZeroAddress } from '../constants'
+import { USDC, USDT } from '../constants/bridgeable'
 
 const app = express()
 app.use('/destinationTokens', destinationTokensRoute)
@@ -10,7 +12,7 @@ describe('destinatonTokens Route', () => {
   it('should return destination tokens for valid input', async () => {
     const response = await request(app).get('/destinationTokens').query({
       fromChain: '1',
-      fromToken: '0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48',
+      fromToken: USDC.addresses[1],
     })
 
     expect(response.status).toBe(200)
@@ -24,7 +26,21 @@ describe('destinatonTokens Route', () => {
   it('should return destination tokens for valid gas Tokens', async () => {
     const response = await request(app).get('/destinationTokens').query({
       fromChain: '1',
-      fromToken: '0x0000000000000000000000000000000000000000',
+      fromToken: NativeGasAddress,
+    })
+
+    expect(response.status).toBe(200)
+    expect(Array.isArray(response.body)).toBe(true)
+    expect(response.body.length).toBeGreaterThan(0)
+    expect(response.body[0]).toHaveProperty('symbol')
+    expect(response.body[0]).toHaveProperty('address')
+    expect(response.body[0]).toHaveProperty('chainId')
+  })
+
+  it('should return destination tokens for valid gas Tokens, ZeroAddress', async () => {
+    const response = await request(app).get('/destinationTokens').query({
+      fromChain: '1',
+      fromToken: ZeroAddress,
     })
 
     expect(response.status).toBe(200)
@@ -40,7 +56,7 @@ describe('destinatonTokens Route', () => {
 
     const response = await request(app).get('/destinationTokens').query({
       fromChain: '534352',
-      fromToken: '0x06eFdBFf2a14a7c8E15944D1F4A48F9F95F663A4',
+      fromToken: USDC.addresses[534352],
     })
 
     expect(response.status).toBe(200)
@@ -54,7 +70,7 @@ describe('destinatonTokens Route', () => {
   it('should return destination tokens for non-checksummed address', async () => {
     const response = await request(app).get('/destinationTokens').query({
       fromChain: '43114',
-      fromToken: '0x9702230a8ea53601f5cd2dc00fdbc13d4df4a8c7',
+      fromToken: USDT.addresses[43114].toLowerCase(),
     })
 
     expect(response.status).toBe(200)
@@ -107,7 +123,7 @@ describe('destinatonTokens Route', () => {
   it('should return 400 for token not supported on specified chain', async () => {
     const response = await request(app).get('/destinationTokens').query({
       fromChain: '10',
-      fromToken: '0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48',
+      fromToken: USDC.addresses[1],
     })
 
     expect(response.status).toBe(400)
@@ -119,7 +135,7 @@ describe('destinatonTokens Route', () => {
 
   it('should return 400 for missing fromChain', async () => {
     const response = await request(app).get('/destinationTokens').query({
-      fromToken: '0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48',
+      fromToken: USDC.addresses[1],
     })
 
     expect(response.status).toBe(400)
diff --git a/packages/rest-api/src/tests/swapRoute.test.ts b/packages/rest-api/src/tests/swapRoute.test.ts
index 6c6d7ac43b..775372bc31 100644
--- a/packages/rest-api/src/tests/swapRoute.test.ts
+++ b/packages/rest-api/src/tests/swapRoute.test.ts
@@ -2,6 +2,8 @@ import request from 'supertest'
 import express from 'express'
 
 import swapRoute from '../routes/swapRoute'
+import { NativeGasAddress, ZeroAddress } from '../constants'
+import { DAI, NETH, USDC } from '../constants/bridgeable'
 
 const app = express()
 app.use('/swap', swapRoute)
@@ -10,8 +12,8 @@ describe('Swap Route with Real Synapse Service', () => {
   it('should return a real swap quote for valid input, 1000 USDC', async () => {
     const response = await request(app).get('/swap').query({
       chain: '1',
-      fromToken: '0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48', // USDC on Ethereum
-      toToken: '0x6B175474E89094C44Da98b954EedeAC495271d0F', // DAI on Ethereum
+      fromToken: USDC.addresses[1],
+      toToken: DAI.addresses[1],
       amount: '1000',
     })
 
@@ -21,11 +23,39 @@ describe('Swap Route with Real Synapse Service', () => {
     expect(response.body).toHaveProperty('query')
   }, 10_000)
 
+  it('should return a real swap quote for valid input, Eth ZeroAddress', async () => {
+    const response = await request(app).get('/swap').query({
+      chain: '10',
+      fromToken: ZeroAddress,
+      toToken: NETH.addresses[10],
+      amount: '1',
+    })
+
+    expect(response.status).toBe(200)
+    expect(response.body).toHaveProperty('maxAmountOut')
+    expect(response.body).toHaveProperty('routerAddress')
+    expect(response.body).toHaveProperty('query')
+  }, 10_000)
+
+  it('should return a real swap quote for valid input, Eth NativeGasAddress', async () => {
+    const response = await request(app).get('/swap').query({
+      chain: '10',
+      fromToken: NativeGasAddress,
+      toToken: NETH.addresses[10],
+      amount: '1',
+    })
+
+    expect(response.status).toBe(200)
+    expect(response.body).toHaveProperty('maxAmountOut')
+    expect(response.body).toHaveProperty('routerAddress')
+    expect(response.body).toHaveProperty('query')
+  }, 10_000)
+
   it('should return 400 for unsupported chain, with error message', async () => {
     const response = await request(app).get('/swap').query({
       chain: '111',
-      fromToken: '0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48',
-      toToken: '0x6B175474E89094C44Da98b954EedeAC495271d0F',
+      fromToken: USDC.addresses[1],
+      toToken: DAI.addresses[1],
       amount: '1000',
     })
 
@@ -36,7 +66,7 @@ describe('Swap Route with Real Synapse Service', () => {
   it('should return 400 for invalid toToken address, with error message', async () => {
     const response = await request(app).get('/swap').query({
       chain: '1',
-      fromToken: '0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48',
+      fromToken: USDC.addresses[1],
       toToken: 'invalid_address',
       amount: '1000',
     })
@@ -51,7 +81,7 @@ describe('Swap Route with Real Synapse Service', () => {
   it('should return 400 for token not supported on specified chain', async () => {
     const response = await request(app).get('/swap').query({
       chain: '1',
-      fromToken: '0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48',
+      fromToken: USDC.addresses[1],
       toToken: '0xC011a73ee8576Fb46F5E1c5751cA3B9Fe0af2a6F', // SNX on Ethereum (Not supported)
       amount: '1000',
     })
@@ -66,8 +96,8 @@ describe('Swap Route with Real Synapse Service', () => {
   it('should return 400 for missing amount, with error message', async () => {
     const response = await request(app).get('/swap').query({
       chain: '1',
-      fromToken: '0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48',
-      toToken: '0x6B175474E89094C44Da98b954EedeAC495271d0F',
+      fromToken: USDC.addresses[1],
+      toToken: DAI.addresses[1],
     })
 
     expect(response.status).toBe(400)
diff --git a/packages/rest-api/src/tests/swapTxInfoRoute.test.ts b/packages/rest-api/src/tests/swapTxInfoRoute.test.ts
index 3faf9ca8ea..99ea0e0f42 100644
--- a/packages/rest-api/src/tests/swapTxInfoRoute.test.ts
+++ b/packages/rest-api/src/tests/swapTxInfoRoute.test.ts
@@ -2,6 +2,7 @@ import request from 'supertest'
 import express from 'express'
 
 import swapTxInfoRoute from '../routes/swapTxInfoRoute'
+import { DAI, USDC } from '../constants/bridgeable'
 
 const app = express()
 app.use('/swapTxInfo', swapTxInfoRoute)
@@ -10,8 +11,8 @@ describe('Swap TX Info Route with Real Synapse Service', () => {
   it('should return transaction info for valid input, 1000 USDC to DAI', async () => {
     const response = await request(app).get('/swapTxInfo').query({
       chain: '1',
-      fromToken: '0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48', // USDC on Ethereum
-      toToken: '0x6B175474E89094C44Da98b954EedeAC495271d0F', // DAI on Ethereum
+      fromToken: USDC.addresses[1],
+      toToken: DAI.addresses[1],
       amount: '1000',
       address: '0x742d35Cc6634C0532925a3b844Bc454e4438f44e',
     })
@@ -24,8 +25,8 @@ describe('Swap TX Info Route with Real Synapse Service', () => {
   it('should return 400 for invalid address, with error message', async () => {
     const response = await request(app).get('/swapTxInfo').query({
       chain: '1',
-      fromToken: '0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48',
-      toToken: '0x6B175474E89094C44Da98b954EedeAC495271d0F',
+      fromToken: USDC.addresses[1],
+      toToken: DAI.addresses[1],
       amount: '1000',
       address: 'invalid_address',
     })
@@ -39,8 +40,8 @@ describe('Swap TX Info Route with Real Synapse Service', () => {
   it('should return 400 for unsupported chain, with error message', async () => {
     const response = await request(app).get('/swapTxInfo').query({
       chain: '111',
-      fromToken: '0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48',
-      toToken: '0x6B175474E89094C44Da98b954EedeAC495271d0F',
+      fromToken: USDC.addresses[1],
+      toToken: DAI.addresses[1],
       amount: '1000',
       address: '0x742d35Cc6634C0532925a3b844Bc454e4438f44e',
     })
@@ -51,7 +52,7 @@ describe('Swap TX Info Route with Real Synapse Service', () => {
   it('should return 400 for invalid toToken address, with error message', async () => {
     const response = await request(app).get('/swapTxInfo').query({
       chain: '1',
-      fromToken: '0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48',
+      fromToken: USDC.addresses[1],
       toToken: 'invalid_address',
       amount: '1000',
       address: '0x742d35Cc6634C0532925a3b844Bc454e4438f44e',
@@ -66,7 +67,7 @@ describe('Swap TX Info Route with Real Synapse Service', () => {
   it('should return 400 for token not supported on specified chain', async () => {
     const response = await request(app).get('/swapTxInfo').query({
       chain: '1',
-      fromToken: '0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48',
+      fromToken: USDC.addresses[1],
       toToken: '0xC011a73ee8576Fb46F5E1c5751cA3B9Fe0af2a6F', // SNX on Ethereum (Not supported)
       amount: '1000',
       address: '0x742d35Cc6634C0532925a3b844Bc454e4438f44e',
@@ -81,8 +82,8 @@ describe('Swap TX Info Route with Real Synapse Service', () => {
   it('should return 400 for missing amount, with error message', async () => {
     const response = await request(app).get('/swapTxInfo').query({
       chain: '1',
-      fromToken: '0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48',
-      toToken: '0x6B175474E89094C44Da98b954EedeAC495271d0F',
+      fromToken: USDC.addresses[1],
+      toToken: DAI.addresses[1],
       address: '0x742d35Cc6634C0532925a3b844Bc454e4438f44e',
     })
     expect(response.status).toBe(400)
diff --git a/packages/rest-api/src/tests/tokenListRoute.test.ts b/packages/rest-api/src/tests/tokenListRoute.test.ts
index 16d2fb82df..127ea9fb12 100644
--- a/packages/rest-api/src/tests/tokenListRoute.test.ts
+++ b/packages/rest-api/src/tests/tokenListRoute.test.ts
@@ -16,7 +16,7 @@ describe('Index Route', () => {
 
     expect(keys.length).toBe(62)
     expect(response.body['ETH']['addresses']['1']).toBe(
-      '0x0000000000000000000000000000000000000000'
+      '0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE'
     )
     expect(response.body['SYN']['addresses']['1']).toBe(
       '0x0f2d719407fdbeff09d87557abb7232601fd9f29'
diff --git a/packages/rest-api/src/utils/tokenAddressToToken.ts b/packages/rest-api/src/utils/tokenAddressToToken.ts
index 21c073e7d5..6bad892582 100644
--- a/packages/rest-api/src/utils/tokenAddressToToken.ts
+++ b/packages/rest-api/src/utils/tokenAddressToToken.ts
@@ -1,4 +1,3 @@
-import { NativeGasAddress, ZeroAddress } from '../constants'
 import { BRIDGE_MAP } from '../constants/bridgeMap'
 
 export const tokenAddressToToken = (chain: string, tokenAddress: string) => {
@@ -7,12 +6,12 @@ export const tokenAddressToToken = (chain: string, tokenAddress: string) => {
     return null
   }
 
-  const address = tokenAddress === ZeroAddress ? NativeGasAddress : tokenAddress
+  const tokenInfo = chainData[tokenAddress]
 
-  const tokenInfo = chainData[address]
   if (!tokenInfo) {
     return null
   }
+
   return {
     address: tokenAddress,
     symbol: tokenInfo.symbol,