nTLDData legacy TLDs too :)

Registry backends

Which technical registry service provider actually serves each gTLD's DNS. ICANN publishes no TLD-to-backend mapping, so this is inferred from three signals: the root-zone nameserver hostnames, the RDAP endpoint from IANA's bootstrap file, and — for TLDs running vanity hostnames — the reverse DNS of those nameservers' addresses.

New gTLDs Legacy gTLDs All gTLDs
1,108 TLDs attributed across 26 platforms. 24 remain unattributed — brand TLDs whose vanity nameservers and RDAP endpoints reveal nothing about who operates them. They are counted here rather than quietly dropped. How the inference works.

Backend concentration

A handful of platforms serve the DNS for most of the gTLD namespace. Share of all gTLD domains by technical backend, from the latest zone counts.

Verisign — 180.78M (70.52%)Identity Digital — 26.64M (10.39%)CentralNic (Team Internet) — 16.61M (6.48%)GoDaddy Registry (Neustar) — 12.53M (4.89%)ZDNS — 6.56M (2.56%)ARI Registry Services (GoDaddy Registry) — 5.13M (2%)GMO Registry — 4.47M (1.74%)Google Registry — 2.43M (0.95%)fury.ca — 383.14k (0.15%)Knipp / TANGO Registry — 294.99k (0.12%)Other — 526.28k (0.21%)
256.36Mdomains
Verisign16 TLDs180.78M70.52%
Identity Digital449 TLDs26.64M10.39%
CentralNic (Team Internet)86 TLDs16.61M6.48%
GoDaddy Registry (Neustar)55 TLDs12.53M4.89%
ZDNS31 TLDs6.56M2.56%
ARI Registry Services (GoDaddy Registry)205 TLDs5.13M2%
GMO Registry46 TLDs4.47M1.74%
Google Registry46 TLDs2.43M0.95%
fury.ca5 TLDs383.14k0.15%
Knipp / TANGO Registry30 TLDs294.99k0.12%
Other13 more backends526.28k0.21%

By domains served

Bar length is domains; the TLD count is shown alongside because the two rank very differently.

Verisign 17 TLDs
180.78M
Identity Digital 449 TLDs
26.64M
CentralNic (Team Internet) 86 TLDs
16.61M
GoDaddy Registry (Neustar) 57 TLDs
12.53M
ZDNS 32 TLDs
6.56M
ARI Registry Services (GoDaddy Registry) 205 TLDs
5.13M
GMO Registry 46 TLDs
4.47M
Google Registry 46 TLDs
2.43M
fury.ca 5 TLDs
383.14k
Knipp / TANGO Registry 30 TLDs
294.99k
Nominet 79 TLDs
154.99k
AFNIC 12 TLDs
121.07k
dnsnode.net 2 TLDs
59,594
Public Interest Registry 10 TLDs
49,306
RyCE 4 TLDs
43,745

All backends

#BackendTLDsDomainsSource
1 Verisign 17 180,783,476 curated
2 Identity Digital 449 26,640,893 curated
3 CentralNic (Team Internet) 86 16,614,622 curated
4 GoDaddy Registry (Neustar) 57 12,525,403 curated
5 ZDNS 32 6,564,522 curated
6 ARI Registry Services (GoDaddy Registry) 205 5,126,717 curated
7 GMO Registry 46 4,468,739 curated
8 Google Registry 46 2,434,113 curated
9 fury.ca inferred 5 383,144 rdap_host shared by 5 TLDs
10 Knipp / TANGO Registry 30 294,991 curated
11 Nominet 79 154,990 curated
12 AFNIC 12 121,072 curated
13 dnsnode.net inferred 2 59,594 ns_suffix shared by 16 TLDs
14 Public Interest Registry 10 49,306 curated
15 RyCE 4 43,745 curated
16 KNET 9 41,026 curated
17 FlexiReg 2 28,602 curated
18 anycastdns.cz inferred 1 16,764 ns_suffix shared by 25 TLDs
19 dns.net.za inferred 3 7,567 ns_suffix shared by 7 TLDs
20 ripn.net inferred 2 2,637 ns_suffix shared by 25 TLDs
21 NIC.br 5 901 curated
22 pch.net inferred 1 75 ns_suffix shared by 17 TLDs
23 aka-ns.net inferred 2 4 ns_suffix shared by 12 TLDs
24 ns.il inferred 1 – ns_suffix shared by 6 TLDs
25 ntc.org.pk inferred 1 – ns_suffix shared by 3 TLDs
26 monic.mo inferred 1 – ns_suffix shared by 5 TLDs

Data currency. Domain counts on this page are from zone files dated and refresh daily. Registrar figures are from ICANN's monthly registry reports for April 2026, which ICANN publishes about three months in arrears; zone files contain no registrar information, so no fresher source exists. Full detail on methodology and live pipeline status.