Bulk Blacklist Check

The Bulk Blacklist Check lets you test many IP addresses and domains against major DNS blacklists (DNSBLs) in one go, instead of checking them one at a time. Paste a list — up to 100 IPs or domains, one per line — and the tool resolves each to its IP and queries five widely-used reputation lists (Spamhaus ZEN, SpamCop, Barracuda, SORBS and S5H), then shows a clear table of which targets are clean and which are listed, plus a one-click CSV export for your records.

This free tool by Hosting Cambodia is built for email administrators, agencies, hosting resellers and IT teams in Phnom Penh, Siem Reap and across Cambodia who manage multiple servers, mailboxes or client domains. Bulk blacklisting checks are the fastest way to spot a deliverability problem before it costs you customers — run your whole fleet of sending IPs and domains, find any that are flagged, and request delisting or fix the root cause. No sign-up and nothing to install.