dnsbl-check
IP blacklist (DNSBL) check: is an IPv4 address listed on Spamhaus ZEN, SpamCop, Barracuda, SORBS, UCEPROTECT or PSBL? Returns each listing with its return codes. Mail-server reputation and abuse triage. $0.01 per IP.
Go to this service →Our latest check (2026-10-11)
- Answering
- Yes — valid x402 payment terms
- Time to answer
- 47 ms
- Price
- $0.010 per call
- Paying buyers, last 30 days
- 2 (directory's own records)
- Paid calls, last 30 days
- 2
- Category
- DNS and domains
- Address
- https://intel.rallylive.ca/dns/blacklist
Accuracy
Accuracy scores are published once a seller has enough paid checks against an independent record (at least 7 scored answers over at least 7 days). Until then no score is shown, and a missing score is never a pass.
For agents
This page as JSON: /sellers/f5c02d03f296.json. Paid lookup by address: GET /api/seller?resource=… ($0.001, x402).