Observed arrival · 2026-10-09

IP Almanac keeps a dated ledger of shared IP addresses

ipalmanac.com Visit website

Editorial interest 77/100 Selection signal · not a rating of the site

IP Almanac offers reverse-IP lookups and DNS history, with network classifications and observation dates for domains and IP addresses.

Landing page captured for the 2026-10-09 issue.

For: Threat researchers and infrastructure investigators
Worth noticing: Its DNS history keeps timeouts and SERVFAIL separate from NXDOMAIN and NODATA, rather than letting failures erase earlier answers.

Field notes

The example response separates ASN source, in-house network category, PTR confirmation, and domain-observation timestamps. The documentation says DNS history retains timeouts and SERVFAIL separately from NXDOMAIN and NODATA, so a failed lookup does not erase an earlier answer. The site reports coverage of one million popular domains and more than 27,000 networks classified in-house; it labels the displayed sample as documentation-only.

Observed signals

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Editorial observations of this landing page, not a rating.

○OpenPublic substance visible

⊠LoginAccess appeared gated

$PaidCommerce or pricing visible

✦PrettyNotable craft visible

◎NicheUnusually specific use

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