Dataset Access

Access the world's largest Internet domains dataset with 3.197B+ domains across 1519 TLDs.

Basic Formats

Hostnames (FQDNs)

Full list of discovered hostnames (FQDNs), including all subdomains. 
www.google.com
100gihj.feedproxy.ghs.google.com
www.nonexistentdomain.xyz

Apex Domains

Registrable apex domains (eTLD+1) — one entry per registered domain, grouped by TLD. 
google.com
nonexistentdomain.xyz

Active Domains

Only domains with verified DNS resolution and active responses. 
www.google.com
100gihj.feedproxy.ghs.google.com

MX Only

Mail exchanger records with priority values and mail server hostnames. 
createam.ml;5 mx2.createam.ml,10 mx1.createam.ml
cradle.ml;0 cradle.ml
creationosweb.freeee.ml;10 park-mx.above.com
crawford.ml;10 mx01.mail.icloud.com,10 mx02.mail.icloud.com

Advanced Formats

DNS JSON

Complete Forward DNS (active resolution) response data in JSON format including record types, TTL, GeoIP information, and resolver metadata. 
{
  "name": "noo-one-else-like-you.tumblr.com.",
  "type": "A",
  "class": "IN",
  "status": "NOERROR",
  "rx_ts": 1764511562179504881,
  "data": {
    "answers": [
      {
        "ttl": 300,
        "type": "A",
        "class": "IN",
        "name": "noo-one-else-like-you.tumblr.com.",
        "data": "74.114.154.22",
        "geoIP": { "Country": "US", "City": "Ashburn" }
      },
      {
        "ttl": 300,
        "type": "A",
        "class": "IN",
        "name": "noo-one-else-like-you.tumblr.com.",
        "data": "74.114.154.18",
        "geoIP": { "Country": "US", "City": "Ashburn" }
      }
    ]
  },
  "flags": ["rd", "ra"],
  "resolver": "172.64.36.56:53",
  "proto": "TCP"
}
$ ls dnsjson
030924  060226  090126  122823  151124  221224  240625  250125  250525  260825  290425  310724
050326  062023  102023  140224  191225  230925  241025  250325  250725  280225  301125  LICENSE

$ ls dnsjson/030924
7cf378f2-4faf-4eba-bec3-c78226935094-1725340706-results-geoip.txt.xz  ff1e3c86-c367-446f-a92f-917591c4a826-1725302551-results-geoip.txt.xz
7d0563fe-2aac-4b38-99c2-a3c0b9ef702b-1725336725-results-geoip.txt.xz  ff6277c9-5e98-4e51-ac96-29cd5423e9e1-1725327132-results-geoip.txt.xz
7d5fa316-531a-467d-be1c-765543a8cc48-1725310167-results-geoip.txt.xz

Big One

Complete Forward DNS dataset package in DNS JSON format. Organized by date snapshots, with A, MX, NS, and TXT records in separate directories. Each record type contains multiple compressed result files.
Note — the 050526 snapshot: a one-off, extended dump that is substantially larger than the regular snapshots. It includes additional record types beyond the usual A / MX / NS / TXT: BIMI, DMARC, and MTA-STS. Total size 282 GB compressed (~4.23 TB raw).
  • A — 58 GB
  • BIMI — 22 GB
  • DMARC — 24 GB
  • MTA-STS — 22 GB
  • MX — 52 GB
  • NS — 55 GB
  • TXT — 52 GB
$ ls big-one/
031125  050326  050526  060226  090126  100425  120725  170426 191225  LICENSE

$ ls big-one/100425/
A/  MX/  NS/  TXT/

$ ls big-one/050526/
A/  BIMI/  DMARC/  MTA-STS/  MX/  NS/  TXT/

$ ls big-one/100425/MX/
18fec2fc-c359-47aa-8c71-8ca6a603ca31-1744394439-results.txt.xz
53975570-c117-4be2-bc47-a4e9b2f2a2c9-1744355927-results.txt.xz
53b5b868-486c-4dbd-80d5-37e471f7cfbc-1744335193-results.txt.xz
a90cbae4-27a4-4377-8195-14ec6bd1574b-1744356529-results.txt.xz
a924aee5-181c-4343-a194-4437b4e1cb77-1744378391-results.txt.xz
ffeb606c-f967-4501-b800-36e0728141c1-1744353730-results.txt.xz
See pricing