Mudassir Khan

EVM chain

Sonic — RPC URL, Chain ID, and Wallet Setup

Sonic mainnet (formerly Fantom Opera) has chain ID 146 and uses S as its native currency. The official RPC URL is https://rpc.soniclabs.com, documentation lives at docs.soniclabs.com, and the block explorer is sonicscan.org.

Chain ID 146Native SMainnetVerified 2026-05-15

Quick reference

Copy paste ready values. Verified on 2026-05-15.

Chain name
Sonic
Chain ID
146 (hex 0x92)
Network type
Mainnet
Native currency
Sonic (S) — 18 decimals
Recommended public RPC
https://rpc.soniclabs.com
Block explorer
https://sonicscan.org
Official docs
https://docs.soniclabs.com/
Last verified
2026-05-15

Add Sonic to MetaMask

One click for injected wallets, or paste the JSON into the manual Add Network form.

{
  "chainIdHex": "0x92",
  "chainName": "Sonic",
  "nativeCurrency": {
    "name": "Sonic",
    "symbol": "S",
    "decimals": 18
  },
  "rpcUrls": [
    "https://rpc.soniclabs.com"
  ],
  "blockExplorerUrls": [
    "https://sonicscan.org"
  ]
}
Manual steps (no injected wallet)
  1. Open MetaMask, click the network dropdown, then Add Network.
  2. Click "Add a network manually".
  3. Network name: Sonic.
  4. New RPC URL: https://rpc.soniclabs.com.
  5. Chain ID: 146.
  6. Currency symbol: S.
  7. Block explorer URL: https://sonicscan.org.
  8. Save and switch.

Free / public RPC URLs

Public RPC URLs for Sonic

These endpoints are free, anonymous, and rate limited. They are useful for development, wallet reads, and one off scripts. For production traffic or indexer workloads, pair them with a paid provider so the public list becomes your fallback rather than your primary.

RPC URLHosted byNotes
https://rpc.soniclabs.comSonic LabsRecommended in official docs.
https://sonic-rpc.publicnode.comAllnodes (publicnode)
https://sonic.drpc.orgdRPC

Paid RPC providers

Production dapps, indexers, and trading systems should use a managed provider with a private API key, archive history, and an SLA. These providers list Sonic support on their public pricing pages.

  • Ankr

    Public RPC for 80+ chains plus a Premium tier.

    Free tier: Free public endpoints (rate limited) for 80+ chains, no signup required.

  • GetBlock

    Shared and dedicated nodes across 50+ chains.

    Free tier: Free plan with a daily request cap shared across chains.

  • Chainstack

    Region selectable elastic and dedicated nodes.

    Free tier: Free Developer plan with 3M requests per month.

  • Tenderly

    RPC with first class simulation and debugging.

    Free tier: Free plan with simulator access and a small RPC quota.

  • dRPC

    Decentralised RPC across 100+ chains.

    Free tier: Free public endpoints per chain plus a generous metered free tier.

Compare every paid RPC provider →

Block explorers and docs

Sonic explorers and documentation

When the answer is real

Caveats and things to verify

  • Sonic is the rebranded successor to Fantom Opera. Many older guides reference FTM and chain ID 250 — that is the legacy Fantom chain, not Sonic.
  • FTM holders had to migrate to S; legacy contracts on chain ID 250 are still queryable but no longer the active chain.

FAQ

Frequently asked questions

What is the Sonic (Fantom successor) chain ID?

Sonic mainnet chain ID is 146 (hex 0x92). The legacy Fantom Opera chain (now retired for new activity) was chain ID 250.

Sources

  • Sonic docs — https://docs.soniclabs.com/sonic/build-on-sonic/getting-started

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Page maintained by Mudassir Khan · Last verified 2026-05-15.