Current coverage

Generic TLDs

Our measurement currently covers the following generic top-level domains (TLDs):

Generic TLD Since Registry operator Status Type
.com 2015-02-20 VeriSign Active Closed
.net 2015-02-20 VeriSign Active Closed
.org 2015-02-20 Afilias on behalf of PIR Active Closed
.info 2016-04-06 Afilias Active Closed
.mobi 2016-04-06 Afilias Active Closed
new gTLDs (*) 2016-04-01 Various Active Closed
.gov and .fed.us (**) 2017-05-01 U.S. General Services Administration (GSA) Active Open
.name 2018-11-10 VeriSign Active Closed
.biz 2018-11-11 NeuStar Active Closed
.asia 2018-11-13 Afilias Active Closed
.aero 2018-11-13 Afilias Active Closed

(*) Our measurement covers almost all new gTLDs available through ICANN’s Centralized Zone Data Service, which is currently around 1200 new gTLDs.

(**) The measurement only covers US Federal domain names included in the list obtained from the US Federal Government open access API.

Country-code TLDs (ccTLDs)

Our measurement currently covers the following country-code top-level domains (ccTLDs):

Country-code TLD Country or territory Registry operator Since Status Type
.nl The Netherlands SIDN 2016-02-09 Active Closed
.se Sweden IIS 2016-06-07 Active Open
.nu Niue IIS 2016-06-07 Active Open
.ca Canada CIRA 2016-07-07 Active Closed
.fi Finland Ficora 2016-11-23 Active Closed
.at Austria NIC.at 2017-01-04 Active Closed
.dk Denmark DKHostmaster 2017-02-06 Active Closed
.ru Russian Federation TCI 2017-06-18 Active Closed
.рф(.xn–p1ai) Russian Federation TCI 2017-06-18 Active Closed
.us United States of America NeuStar 2018-03-23 Active Closed
.gt Guatemala Registro de Dominions .gt 2019-04-30 Active Closed
.na Namibia NA-NIC 2019-05-24 Active Closed
.ee Estonia Eesti Interneti SA 2019-07-29 Active Open
.co Colombia NeuStar 2019-11-20 Active Closed
.ch Switzerland SWITCH 2020-05-19 Active Closed
.li Liechtenstein SWITCH 2020-05-19 Active Closed
.sk Slovakia .SK NIC 2022-05-11 Active Open
.fr France AFNIC 2022-08-10 Active Open

Other forward measurements

Other measurements we are currently running:

Name Description Since Status Type
Alexa top 1 million Measurement of the Alexa top 1 million domains 2016-01-22 Active Open
Infrastructure measurement Measurement of A/AAAA for NS and MX and TLSA for MX 2017-01-23 Active Closed
Cisco Umbrella top 1 million Measurement of the Cisco Umbrella top 1 million domains 2019-01-14 Active Open
Tranco top 1 million Measurement of the Tranco top 1 million domains 2022-08-11 Active Open
Cloudflare Radar top 1 million Measurement of the Cloudflare Radar top 1 million domains 2022-10-04 Active Open

Reverse DNS measurements

We currently run the following reverse DNS measurements:

Name Description Since Status Type
IPv4 reverse DNS name space Measurement covering the entire IPv4 reverse DNS name space 2020-02-17 Active Closed

This information was last updated on 2022-10-04