Domain Alive Checker

Batch classify domains as resolving, dead (CentralNic registry / dead IP / NXDOMAIN), or needing manual review.
Accepts .txt or .csv files — one domain per line. Handles 3,700+ domains with concurrent DNS checks.
Note: Domains are not penalized for using non-Cloudflare nameservers. Only real NXDOMAIN or exact dead-IP matches are flagged.

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Drop a .txt or .csv file here

or browse to upload — or paste domains below

DNS Resolver

Dead IPs (comma-separated)

Concurrency

Domain Alive Checker

Results