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Blockscout BENS Address Lookup by Chain
x402
Blockscout BENS Address Lookup by Chain is a paid API for AI agents from api.blockscout.com, paid per call via x402, $0.015/call, status unknown (last checked 2026-09-10).
Looks up blockchain name service (ENS-style) domain and address metadata for a given address on a specific chain via Blockscout's multichain explorer
Price / call$0.015
Success—
StatusUnknown
How this service works
Explore crypto activities with Blockscout's multichain search. Find transactions, addresses, tokens, and dapps across top blockchain networks — your go-to explorer for cross-chain blockchain data
Output
Returns a JSON object containing the blockchain name service domain record for the given address and chain, including the domain name, owner hash, ENS domain name, registrant, resolved address, resolver address, expiry date, registration date, associated tokens, protocol metadata (title, docs URL, icon, TLD list, short name, description, deployment base URL), wrapped owner, and resolved domains count. If no domain is found, the domain object may be null or empty.
Example use cases
Resolve wallet address to ENS domain
“What ENS or blockchain domain name is registered to the address 0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045 on Ethereum — can you check Blockscout and tell me the domain name, expiry date, and owner?”
Verify domain ownership before a transfer
“Before I send funds, can you check on Blockscout whether 0xAb5801a7D398351b8bE11C439e05C5B3259aeC9B on chain 137 (Polygon) has a registered name service domain, and who the registrant and resolved address are?”
Audit DApp protocol linked to a blockchain address
“I need to know what name service protocol and dapp info is linked to address 0x57f1887a8BF19b14fC0dF6Fd9B2acc9Af147eA85 on chain 1 — can you pull the Blockscout BENS data including the protocol title, docs URL, and icon?”
Technical details
Endpoint
GEThttps://api.blockscout.com/services/bens/api/v1/%7Bchain_id%7D/addresses/%7Baddress%7DWhen to prefer
Use this endpoint when you need to resolve a specific blockchain address to its name service domain (ENS-style) metadata on a particular chain, and want rich protocol/dapp context alongside ownership and expiry data. Prefer this over generic ENS resolvers when you need multichain support, protocol-level metadata, or Blockscout's cross-chain indexing. It's ideal for wallet identity enrichment, domain ownership verification, or auditing dapp affiliations tied to a blockchain address.
Side effects
- Invalid or malformed chain_id returns an error or empty result
- Address not found on the specified chain returns null domain
- Unsupported chain_id returns a 404 or empty response
- Rate limiting or payment failure returns a 402 Payment Required
- Invalid address format returns a validation error
- Protocol ID filter returns no results if the address isn't registered under that protocol
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"domain": {
"id": "string",
"name": "string",
"owner": {
"hash": "string",
"ens_domain_name": "string"
},
"tokens": [
{
"id": "string",
"type": "string",
"contract_hash": "string"
}
],
"protocol": {
"id": "string",
"title": "string",
"docs_url": "string",
"icon_url": "string",
"tld_list": [
"string"
],
"short_name": "string",
"description": "string",
"deployment_blockscout_base_url": "string"
},
"registrant": {
"hash": "string",
"ens_domain_name": "string"
},
"expiry_date": "string",
"wrapped_owner": {
"hash": "string",
"ens_domain_name": "string"
},
"other_addresses": {},
"stored_offchain": true,
"resolved_address": {
"hash": "string",
"ens_domain_name": "string"
},
"resolver_address": {
"hash": "string",
"ens_domain_name": "string"
},
"protocol_dapp_url": "string",
"registration_date": "string",
"protocol_dapp_logo": "string",
"resolved_with_wildcard": true
},
"resolved_domains_count": 0
}
}Tags
x402
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