Expired Domain Finder

Check domain lists for DNS signals of expiration and export a CSV report.

Expired Domain Finder

Check a domain list for DNS signals of expiration or misconfiguration, with an optional HTTP probe.

Processing…
Domains (one per line)
Tips: You can paste full URLs — the tool will extract the domain. Use DNS-only for fastest screening.
Mode
HTTP probe sends a lightweight request to see if a server responds on HTTPS/HTTP.
Note: “Potentially available” means no DNS evidence of resolution was found. Always confirm with a registrar/WHOIS before purchasing.
Results will appear here
Paste your domains on the left, choose a mode, and run the check. You can then copy the CSV or download it.

About Expired Domain Finder

Expired Domain Finder – expired domain checker

Find domains that look expired or potentially available using fast, privacy-friendly checks you can run right in your browser session. Paste a list of domains, choose your checking mode, and get a clean report you can copy or download as CSV for outreach, SEO research, and brand monitoring.

This tool focuses on practical signals (DNS and optional HTTP reachability) so you can triage large lists quickly before you do deeper registrar or WHOIS verification. Use it as a first-pass filter to spot likely drops, misconfigurations, or unused domains.

How It Works

The Expired Domain Finder analyzes each domain and assigns a status based on what the internet can currently resolve for it. When a domain is truly expired and unregistered, it often stops resolving in DNS (no A/AAAA/NS records) and won’t respond on the web. However, DNS can also be missing for active domains (misconfiguration) and some parked domains still resolve, so the tool presents the result as a probability/triage signal rather than a guarantee.

Step-by-step

  • 1) Normalize input: The tool cleans the list (trims spaces, removes protocols and paths, lowercases, and optionally deduplicates).
  • 2) Validate domains: Each line is checked for a domain-like shape so typos can be flagged early.
  • 3) Check DNS: The tool queries common record types (A, AAAA, NS, and SOA) to see whether the domain resolves or has authoritative information.
  • 4) Optional web probe: If enabled, it attempts a lightweight HTTP/HTTPS request to see whether a server responds (useful for detecting “registered but empty” vs “non-resolving”).
  • 5) Report: You receive a status label, notes, and a CSV-ready output you can copy or download.

Because DNS caches exist and registries update on different schedules, the same domain can look different over time. For the most reliable confirmation, always cross-check promising candidates with your preferred registrar or WHOIS service after triage.

Key Features

Bulk domain processing

Paste hundreds or thousands of domains at once. The tool processes them line by line and produces a consistent, sortable report.

DNS-based availability signals

DNS is the fastest public signal to detect a domain that may be unregistered, dropped, or misconfigured. The report highlights missing records clearly.

Optional HTTP reachability check

Enable the web probe to see whether a domain responds on port 80/443. This helps distinguish “resolves but dead site” from “resolves and active”.

Clean notes for decision making

Each row includes a human-readable reason (for example, “No A/AAAA/NS/SOA records found”) so you can decide what to review next.

Copy and CSV download

Copy the report for spreadsheets or download a CSV instantly for outreach lists, audits, or client deliverables.

Use Cases

  • SEO and backlink prospecting: Identify domains that might be available for rebuilding content or reclaiming valuable links.
  • Brand and trademark monitoring: Watch for competitor or brand-variant domains that lapse and become available.
  • Agency audits: Quickly find client domains with broken DNS that look “offline” and require urgent fixes.
  • Portfolio cleanup: Check long lists of owned domains to spot ones that no longer resolve as expected.
  • Lead generation: Locate potentially abandoned domains for polite purchase inquiries or partnership outreach.

In all cases, treat the output as an efficient shortlist. For any domain that matters, confirm registration status with a registrar search and verify history (archives, spam checks, and backlink quality) before you invest time or money.

Optimization Tips

Start with DNS-only for speed

If you are screening a very large list, begin with DNS-only mode. It is fast and usually enough to flag obvious non-resolvers. Then run a second pass with the HTTP probe on the short list.

Deduplicate and normalize your list

Domains often appear with http/https, www prefixes, or paths. Normalizing and deduplicating reduces noise and makes your export easier to work with in spreadsheets.

Re-check candidates on a different day

DNS and registration changes can take time to propagate. If a domain is important, re-check it later and confirm via a registrar. This avoids false positives caused by temporary DNS issues.

FAQ

Not always. It means the tool could not find DNS evidence that the domain is currently resolving. That can happen when a domain is unregistered, but it can also happen because DNS is misconfigured, temporarily unreachable, or intentionally disabled.

Parking providers keep DNS records and web responses alive even if the domain isn’t used for a real site. DNS resolution and an HTTP response are signals of registration or configuration, not proof of meaningful content.

The probe is lightweight, but it can be slower because it waits for network timeouts. For very large lists, use DNS-only first and probe only the most interesting candidates.

Yes, but the most reliable input is the punycode form (starting with xn--). If you have Unicode domains, convert them before checking for the cleanest results.

Confirm availability at a registrar, review domain history (archives and backlink profile), and assess any trademark concerns. This tool is a fast shortlist generator, not a final authority.

Why Choose This Tool

Many “expired domain” workflows start with expensive data sources or slow manual checks. This tool gives you a quick, practical first pass using the same public signals your browser and DNS resolver rely on. You can screen lists, focus on the best candidates, and reduce wasted time.

Because the report is copyable and downloadable, it fits naturally into SEO audits, acquisition pipelines, and domain management routines. Use it to move faster while staying transparent about what the signals mean, and always verify before you purchase or bid.