Malicious Domain DNS Checker — DBL & URIBL Threat Scan
Domain DNSBL scan for malware and abuse signals — Spamhaus DBL, URIBL multi, and ZRD
How to Use This Tool
- Enter the suspect domain (apex or subdomain as seen in the URL).
- Domain validation normalizes the query string.
- Three domain DNSBL zones are queried in parallel.
- lists array returns name, query host, and listed boolean each.
- listed aggregates hits; listedOn names matching zones.
- Follow note guidance — pair with IP checks on resolved addresses.
About This Tool
Threat analysts triaging links from email, SIEM alerts, or user reports need fast domain-level blocklist context before visiting a URL or pivoting to WHOIS. VSPIC malicious domain DNS checker calls domain-blacklist on the domain string you submit, querying Spamhaus DBL, URIBL multi, and Spamhaus ZRD with per-list listed flags, listedCount, listedOn, summary, and note distinguishing domain lists from IP SMTP blocklists.
A listed result is a strong abuse signal — not automatic conviction. Clean results mean no hit on checked zones at query time; continue investigation with phishing domain checker, threat intel lookup, and resolved IP malware scans when behavior still looks suspicious.
Common use cases
- •View all DNS records of a domain after migration
- •Confirm DNS records after domain changes
- •Test for DNS leaks when using a VPN
- •Debug email delivery with MX and TXT records
Why use VSPIC for ?
- Fast malicious signal from major domain DNSBL zones.
- Per-list breakdown for analyst notes.
- listedOn suitable for ticket subject lines.
- Free instant scan — no threat feed subscription.
- Read-only DNSBL semantics — safe for SOC workflows.
- Same domain-blacklist backend as DNS blacklist checker.
Domain DNSBL in threat workflows
SOC playbooks often start with blocklist lookups before sandbox detonation. Domain DNSBL hits indicate the hostname appeared in spam, phishing, or malware URI feeds — fast negative reputation signal.
Our handler queries Spamhaus DBL, URIBL multi, and Spamhaus ZRD — the same trio as DNS blacklist checker with threat-intel framing.
Reading listed, listedOn, and summary
listed true when any zone returns a hit. listedCount counts hits; listedOn arrays human-readable list names. Summary states either how many blocklists matched or that none matched on checked zones.
Note field reminds analysts that IP reputation is a separate check — resolve A records and run malware IP lookup when links still look suspicious after clean domain DBL.
Malicious versus blacklisted terminology
Listed on DBL suggests abusive history in feed operator criteria — not a court finding. Continue investigation with page content analysis, passive DNS, and registrar WHOIS for full verdict.
Clean results at query time do not whitelist a domain forever — young domains may list later as feeds update.
Subdomains in phishing campaigns
Attackers often use branded subdomains on compromised SaaS or bulletproof hosts. Query the exact hostname from the URL path — not only the registrable apex — when feeds differentiate labels.
Wildcard abuse may cause parent-zone signals — correlate with hosting provider trace.
Pairing with sibling threat tools
Follow with phishing domain checker for heuristic risk scoring, threat intel lookup for combined IP and domain briefs, and domain reputation checker for SPF or DMARC and WHOIS age context.
DNS blacklist checker page reports identical data with mail-focused language.
False negatives and analyst discipline
Novel malware domains may not be listed yet. Automated scans supplement — not replace — sandbox execution and human review.
Rate limit bulk API scans to avoid DNSBL query throttling that mimics clean answers.
Incident documentation
Export listedOn and summary into SIEM tickets. Timestamp queries for legal chain of custody when reporting to registrars or hosting providers.
Re-scan after takedown requests to confirm delist propagation.
API automation for SOAR
GET /ip-tools/api/extended?action=domain-blacklist&domain=suspect.example. Parse listed boolean into playbooks. Branch to deeper intel when true.
Store raw JSON in case management — not just boolean flags.
Privacy and authorization
Scan domains encountered in authorized security work. Do not use blocklist hits alone for automated blocking without policy review.
We do not permanently store suspect domain queries.
Important notes & limitations
- Three domain lists — not exhaustive global threat intel.
- Clean scan does not prove benign intent or safe content.
- Subdomain versus apex listing rules vary.
- DNSBL DNS can lag real-world abuse activation.
- Does not fetch page content or malware binaries.
Frequently Asked Questions
Yes. VSPIC offers this malicious domain DNS checker at no cost with no account required. Results load in real time.
We do not permanently store your queries on our servers. Some tools run entirely in your browser; others fetch public data for the request only.
Yes. Open the page in any modern phone or tablet browser. Results work on Wi‑Fi and mobile data.
No. It means no listing on three checked domain DNSBL zones at query time. Continue sandbox and content analysis.
domain-blacklist with a domain parameter.
Same backend and JSON. Malicious domain DNS checker frames threat SOC workflows; DNS blacklist checker frames mail and URI blocklist operations.
Spamhaus DBL, URIBL multi, and Spamhaus ZRD.
Yes when investigating live threats. Domain DBL and IP blacklists cover different layers.
Yes via the extended API domain-blacklist action. Respect rate limits and organizational policy.
Next step for your check
Continue with dns blacklist checker on VSPIC.
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