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Domain Name System (DNS) Historical Record Archive.

With our new look website you can now find other domains hosted on the same IP address, your website neighbours and more even quicker than before.

Please be patient as the site returns from a long absence. If you have any problems please head over to our discord and let us know.

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DNS History FAQ

Questions

Q1: Why do I see gaps in the dates for the same record?
Q7: I'm using DDoS protection, how can I hide historical records?
Q2: A host name is missing from dnshistory?
Q3: Why do I only see records listed once when they are listed multiple times in the zone file?
Q5: How often do you check my domains DNS records?
Q4: Why do you list (sub)domains that don't exist?
Q6: What is dnshistory-org-wildcard-test?

Answers

A1: These could be due to network problems between our server and the domains DNS server, or a problem with the DNS server itself.
A7: Protection is now available using our DNSHistory-Protect service
A2: We only list host names with characters a-z, 0-9 and -. If you still feel we are missing a host name please add it on the index page.
A3: We only list unique records, i.e. if the response for "A" records includes "10.0.0.1, 10.0.0.2, 10.0.0.1" we will only list "10.0.0.1,10.0.0.2" and not the repeated "10.0.0.1" entry.
A5: We aim to check every domain at least once per month and the minimum interval between checks is 24 hours. We also check the serial in the SOA to determine if we need to re-check the other records to cut down the number of requests for domains that haven't changed.
A4: We list (sub)domains that are referred to by other domains and this includes those that don't exist (Subject to A2 rules). We also list old (sub)domains that might no longer exist.
A6: This is a test hostname we use to help determine if you are using a wildcard (*) in your dns.

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