InternetDataInternetData
Domain DNSDomain DNS A

Domain DNS A

Each domain's IPv4 addresses from its A records, with CNAMEs followed, one address per row.

Explore API
IDdomain_dns_a_v1
Formatscsvgz
Update FrequencyWeekly
Last UpdatedOctober 16th 2026 (today)
Entries211,588,399
File Size (csvgz)1.49 GB

Overview

The IPv4 addresses each name resolves to, one row per name and address. A name under a CNAME lists the addresses its chain ends at, so ip is always an address, never an alias; the chain itself is in Domain DNS CNAME.

Names are domains registered under the generic top-level domains, their www names, and widely used names under country-code domains such as .uk and .de: lowercase, internationalized ones in punycode (xn--). A www name has rows only where its addresses differ from its domain's: when www.example.com resolves to exactly the addresses example.com does, only example.com has rows.

last_seen is the most recent day the name resolved to the address. A name with no A record has no rows. IPv6 addresses are in Domain DNS AAAA, in the same shape.

Formats

curl -L -o domain_dns_a_v1.csv.gz -X GET "https://internetdata.io/api/v2/database/download?id=domain_dns_a_v1&format=csvgz&apikey=$APIKEY"
Schema
NameTypeDescription
namestringThe domain or host name, lowercase, internationalized names in punycode (xn--). A www. name is listed only where its addresses differ from its domain's.
ipipaddressAn IPv4 address the name resolves to, following any CNAME. A name with several addresses has a row for each.
last_seendateThe most recent day the name was resolved to this address.
Samples
nameiplast_seen
phoenixsemicorp.com141.193.213.112026-10-12
secdocprep.com185.230.63.1862026-10-11
homewarrantyresources.com66.96.149.322026-10-11
mypastiche.net15.197.148.332026-10-14
kinestance.info89.31.143.902026-10-16

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