Directory / domain-availability-checker.underscoredone.com
domain-availability-checker.underscoredone.com/check working
https://domain-availability-checker.underscoredone.com/check
Before you pay
- Advice
ok- Protocol
- x402 · http · POST
- Asks for
- 0.01 USDC on base
- Catalogue says
- 0.01 USDC
- Pays to
0xE9740820225B3918b4ddd1292C7cA4Ca0e2C2F08- Last check
- 12 min ago · 146 ms · HTTP 402
- Detail
- 402 with valid terms
Reliability
- Uptime 24 h
- 100.0%
- Uptime 7 days
- 100.0% (112 checks)
- Uptime 30 days
- 100.0% (signed daily)
- Paid calls 30 d
- 3 from 3 payers (x402 Bazaar)
- Listed by
- x402-bazaar
- First seen
- 2026-11-05 22:08 UTC
Description (from the catalogue, unverified)
Give this API up to 10 domain names and it tells you whether each has a registration record at the official registry. It uses RDAP, the structured replacement for WHOIS, so there is no free-text parsing. Each domain comes back as 'registered', 'unregistered', or 'indeterminate' when the registry has no RDAP for that ending. 'Unregistered' means no record was found, which usually means available - but reserved and premium names also return no record. Registration status only; no pricing.
Signed history
| When | Statement | Log index |
|---|---|---|
| 2026-11-08 00:13 UTC | f08b91eb…430458 daily summary | 215796 |
| 2026-11-07 00:16 UTC | 7b8fdcea…0acd3a daily summary | 136894 |
| 2026-11-06 00:13 UTC | 1028b4d6…000094 daily summary | 45633 |
Verify any statement offline: how.
For agents and owners
JSON: https://alalanet.com/v1/services/qcxvz36k2xrdbc32
Badge:
<a href="https://alalanet.com/s/qcxvz36k2xrdbc32"><img src="https://alalanet.com/badge/qcxvz36k2xrdbc32" alt="alalanet status"></a>Own this service? Get verified. Do not want it checked? See the prober page.