Quick deliverability check

Is your domain or IP on a blocklist?

Paste a sending domain or IPv4 address (and an optional From address to add sender context) and we'll score the blocklist risk from 0 (clean across every list we check) to 100 (actively flagged on Spamhaus / Barracuda / Talos / SenderScore), with the top reasons that drove the score.

Check the blocklist risk for a sender
Paste a sending domain or mail-originating IPv4 — we'll fan it out across Spamhaus, Barracuda, SenderScore, Cisco Talos, SORBS and the rest of the lists that actually move the inbox needle, then score the overall risk on a 0–100 scale.
Optional sender contextHelps weigh the score for this exact sender

The From header helps the scorer weight whether score-by-domain applies to score-for-this-specific-sender.

Want full blocklist + reputation monitoring?
One email and we'll let you know when ReputaPilot opens up — continuous blocklist coverage across Spamhaus, Barracuda, SenderScore, Cisco Talos, SORBS and the rest of the lists that affect delivery, with delist guidance when a listing appears.

Drop your email above — we'll only ping you about the blocklist monitor. No newsletters, no upsells.

Have a specific question? Email us

Next checks

Choose your next sender-authentication check

Blocklist status is one part of inbox placement. Review your overall deliverability score or use the domain blocklist lookup for per-list status before you run the full audit for the wider sending picture.

Run the full audit →
SPF record checker DKIM validator DMARC checker

FAQ

Blacklist checker — frequently asked questions

Pair this checker with the guide

Want the bigger picture on sender reputation?

Blocklist risk is the second-fastest signal to change in the reputation composite — a single listing can move placement from Primary to Junk overnight. The full reputation guide explains how this 0–100 risk score composes with Gmail Postmaster Tools, Microsoft SNDS, and the major DNSBLs to produce the per-provider placement difference you can see in your own inbox.

Read the sender reputation guide →