Every extension, oldest first
a21
We have seen a21 registered in 123 extensions. The oldest is a21.com, registered on 22 Apr 1997; the newest, a21.si, on 6 Oct 2026.
Checking which of them answer in DNS today…
- Seen in
- 123 extensions
- Oldest
- 1997 a21.com
- Newest
- 2026 a21.si
- In DNS today
- … checking
Registered in
| Year | Domain | Registered | Expires | Registrar | Details | DNS today | Screenshot |
|---|---|---|---|---|---|---|---|
| 1997 | a21.com | 22 Apr 1997 | Apr 2028 | Network Solutions, LLC | 22 Apr 1997 expires Apr 2028 | checking… |  |
| 1997 | a21.net | 9 Dec 1997 | Dec 2026 | Porkbun LLC | 9 Dec 1997 expires Dec 2026 | checking… | |
| 2000 | a21.org | 9 Feb 2000 | Feb 2028 | GoDaddy.com, LLC | 9 Feb 2000 expires Feb 2028 | checking… |  |
| 2004 | a21.ca | 5 Aug 2004 | Aug 2027 | Webnames.ca Inc. | 5 Aug 2004 expires Aug 2027 | checking… |  |
| 2005 | a21.com.sg | 7 Dec 2005 | Dec 2026 | Singnet Pte Ltd | 7 Dec 2005 expires Dec 2026 | checking… |  |
| 2006 | a21.cz | 20 Feb 2006 | Feb 2028 | REG-INTERNET-CZ | 20 Feb 2006 expires Feb 2028 | checking… |  |
| 2006 | a21.mobi | 14 Oct 2006 | Oct 2026 (passed) | Network Solutions, LLC | 14 Oct 2006 expiry Oct 2026 (passed) | checking… |  |
| 2007 | a21.fr | 21 Feb 2007 | Feb 2027 | IONOS SE | 21 Feb 2007 expires Feb 2027 | checking… |  |
| 2007 | a21.fi | 26 Sep 2007 | — | — | 26 Sep 2007 | checking… |  |
| 2010 | a21.cc | 13 Jan 2010 | Jan 2027 | Arsys Internet, S.L. dba NICL… | 13 Jan 2010 expires Jan 2027 | checking… | |
| 2011 | a21.nl | 17 Dec 2011 | — | — | 17 Dec 2011 | checking… |  |
| 2012 | a21.it | 18 Sep 2012 | — | — | 18 Sep 2012 | checking… |  |
| 2014 | a21.tv | 14 May 2014 | May 2029 | Network Solutions, LLC | 14 May 2014 expires May 2029 | checking… |  |
| 2015 | a21.us | 10 May 2015 | May 2027 | Dynadot Inc | 10 May 2015 expires May 2027 | checking… | |
| 2016 | a21.ru | 4 Aug 2016 | — | AXELNAME-RU | 4 Aug 2016 | checking… |  |
| 2017 | a21.cl | 10 May 2017 | May 2027 | — | 10 May 2017 expires May 2027 | checking… |  |
| 2017 | a21.inpending delete on 3 Aug 2026 | 23 May 2017 | May 2026 (passed) | OVI HOSTING PVT LTD | 23 May 2017 expiry May 2026 (passed) | checking… |  |
| 2018 | a21.pl | 12 Sep 2018 | Sep 2027 | Welstand | 12 Sep 2018 expires Sep 2027 | checking… |  |
| 2018 | a21.design | 2 Nov 2018 | Nov 2026 | Tucows Domains Inc. | 2 Nov 2018 expires Nov 2026 | checking… |  |
| 2018 | a21.one | 6 Dec 2018 | Dec 2026 | GoDaddy.com, LLC | 6 Dec 2018 expires Dec 2026 | checking… |  |
| 2019 | a21.vip | 8 Nov 2019 | Nov 2029 | GoDaddy.com, LLC | 8 Nov 2019 expires Nov 2029 | checking… | |
| 2019 | a21.co.uk | 9 Dec 2019 | Dec 2026 | Mark Adams t/a 3DWeb.co.uk | 9 Dec 2019 expires Dec 2026 | checking… |  |
| 2020 | a21.app | 5 Mar 2020 | Mar 2027 | NETIM SARL | 5 Mar 2020 expires Mar 2027 | checking… |  |
| 2020 | a21.agency | 15 Mar 2020 | Mar 2027 | Domain.com - Network Solution… | 15 Mar 2020 expires Mar 2027 | checking… |  |
| 2020 | a21.me | 13 May 2020 | May 2027 | Dynadot Inc | 13 May 2020 expires May 2027 | checking… |  |
| 2021 | a21.tw | 26 Feb 2021 | Feb 2027 | PCHOME | 26 Feb 2021 expires Feb 2027 | checking… | |
| 2021 | a21.com.br | 22 Jul 2021 | — | — | 22 Jul 2021 | checking… |  |
| 2021 | a21.kr | 7 Dec 2021 | Dec 2026 | — | 7 Dec 2021 expires Dec 2026 | checking… | |
| 2021 | a21.shop | 29 Dec 2021 | Dec 2030 | Namecheap, Inc. | 29 Dec 2021 expires Dec 2030 | checking… |  |
| 2022 | a21.media | 13 Apr 2022 | Apr 2027 | Porkbun LLC | 13 Apr 2022 expires Apr 2027 | checking… |  |
| 2022 | a21.ge | 23 Jul 2022 | Jul 2027 | Magticom | 23 Jul 2022 expires Jul 2027 | checking… |  |
| 2022 | a21.info | 5 Dec 2022 | Dec 2026 | http.net Internet GmbH | 5 Dec 2022 expires Dec 2026 | checking… |  |
| 2023 | a21.space | 21 Mar 2023 | Mar 2027 | Hosting Concepts B.V. d/b/a R… | 21 Mar 2023 expires Mar 2027 | checking… |  |
| 2023 | a21.solutions | 12 Apr 2023 | Apr 2027 | GoDaddy.com, LLC | 12 Apr 2023 expires Apr 2027 | checking… |  |
| 2023 | a21.digital | 3 Nov 2023 | Nov 2026 | NameCheap, Inc. | 3 Nov 2023 expires Nov 2026 | checking… |  |
| 2023 | a21.ai | 28 Nov 2023 | Nov 2027 | NAMECHEAP INC | 28 Nov 2023 expires Nov 2027 | checking… |  |
| 2023 | a21.dev | 16 Dec 2023 | Dec 2026 | Tucows Domains Inc | 16 Dec 2023 expires Dec 2026 | checking… |  |
| 2024 | a21.co | 26 Feb 2024 | Feb 2027 | Spaceship, Inc. | 26 Feb 2024 expires Feb 2027 | checking… | |
| 2024 | a21.pt | 2 Jul 2024 | Jul 2027 | — | 2 Jul 2024 expires Jul 2027 | checking… |  |
| 2024 | a21.world | 4 Sep 2024 | Sep 2026 (passed) | Tucows Domains Inc. | 4 Sep 2024 expiry Sep 2026 (passed) | checking… |  |
| 2024 | a21.pro | 26 Oct 2024 | Oct 2026 (passed) | Registrar of Domain Names REG… | 26 Oct 2024 expiry Oct 2026 (passed) | checking… |  |
| 2024 | a21.services | 8 Dec 2024 | Dec 2026 | NameCheap, Inc. | 8 Dec 2024 expires Dec 2026 | checking… | |
| 2025 | a21.no | 26 Mar 2025 | — | INTERNET MARKETING CONSULT AS | 26 Mar 2025 | checking… | |
| 2025 | a21.storepending delete on 3 Aug 2026 | 5 Jun 2025 | Jun 2026 (passed) | West263 International Limited | 5 Jun 2025 expiry Jun 2026 (passed) | checking… | |
| 2025 | a21.xyzpending delete on 3 Aug 2026 | 22 Jun 2025 | Jun 2026 (passed) | Dynadot Inc | 22 Jun 2025 expiry Jun 2026 (passed) | checking… | |
| 2025 | a21.charity | 30 Jun 2025 | Jun 2027 | GoDaddy.com, LLC | 30 Jun 2025 expires Jun 2027 | checking… |  |
| 2025 | a21.site | 5 Jul 2025 | Jul 2027 | GoDaddy.com, LLC | 5 Jul 2025 expires Jul 2027 | checking… |  |
| 2025 | a21.capital | 4 Aug 2025 | Aug 2026 (passed) | GoDaddy.com, LLC | 4 Aug 2025 expiry Aug 2026 (passed) | checking… |  |
| 2025 | a21.io | 11 Aug 2025 | Aug 2026 (passed) | Sav.com, LLC - 3 | 11 Aug 2025 expiry Aug 2026 (passed) | checking… |  |
| 2025 | a21.studio | 19 Sep 2025 | Sep 2026 (passed) | Tucows Domains Inc. | 19 Sep 2025 expiry Sep 2026 (passed) | checking… |  |
| 2025 | a21.lat | 22 Sep 2025 | Sep 2026 (passed) | Dynadot Inc | 22 Sep 2025 expiry Sep 2026 (passed) | checking… |  |
| 2025 | a21.school | 22 Sep 2025 | Sep 2026 (passed) | IONOS SE | 22 Sep 2025 expiry Sep 2026 (passed) | checking… |  |
| 2025 | a21.se | 29 Sep 2025 | — | Loopia AB | 29 Sep 2025 | checking… | |
| 2025 | a21.games | 7 Nov 2025 | Nov 2030 | NameCheap, Inc. | 7 Nov 2025 expires Nov 2030 | checking… | |
| 2025 | a21.icu | 18 Nov 2025 | Nov 2026 | Gname.com Pte. Ltd. | 18 Nov 2025 expires Nov 2026 | checking… |  |
| 2025 | a21.website | 10 Dec 2025 | Dec 2026 | IONOS SE | 10 Dec 2025 expires Dec 2026 | checking… |  |
| 2026 | a21.social | 9 Feb 2026 | Feb 2027 | Name.com, Inc. | 9 Feb 2026 expires Feb 2027 | checking… |  |
| 2026 | a21.lol | 19 Apr 2026 | Apr 2027 | Dynadot Inc | 19 Apr 2026 expires Apr 2027 | checking… |  |
| 2026 | a21.asia | 30 Apr 2026 | Apr 2027 | GoDaddy.com, LLC | 30 Apr 2026 expires Apr 2027 | checking… |  |
| 2026 | a21.id | 30 Apr 2026 | Apr 2027 | PT Jagat Informasi Solusi (in… | 30 Apr 2026 expires Apr 2027 | checking… | |
| 2026 | a21.sg | 30 Apr 2026 | Apr 2027 | Key-Systems GmbH | 30 Apr 2026 expires Apr 2027 | checking… |  |
| 2026 | a21.bet | 10 May 2026 | May 2027 | Dynadot Inc | 10 May 2026 expires May 2027 | checking… |  |
| 2026 | a21.homes | 20 May 2026 | May 2027 | Dynadot Inc | 20 May 2026 expires May 2027 | checking… |  |
| 2026 | a21.best | 25 May 2026 | May 2027 | Dynadot Inc | 25 May 2026 expires May 2027 | checking… |  |
| 2026 | a21.bio | 25 May 2026 | May 2027 | Dynadot Inc | 25 May 2026 expires May 2027 | checking… |  |
| 2026 | a21.online | 27 May 2026 | May 2027 | PDR Ltd. d/b/a PublicDomainRe… | 27 May 2026 expires May 2027 | checking… |  |
| 2026 | a21.fun | 2 Jun 2026 | Jun 2027 | Dynadot Inc | 2 Jun 2026 expires Jun 2027 | checking… |  |
| 2026 | a21.mobile | 3 Jun 2026 | Jun 2028 | 101domain GRS Ltd. | 3 Jun 2026 expires Jun 2028 | checking… |  |
| 2026 | a21.onl | 8 Jun 2026 | Jun 2027 | Dynadot Inc | 8 Jun 2026 expires Jun 2027 | checking… |  |
| 2026 | a21.biz | 12 Jun 2026 | Jun 2027 | Dynadot Inc | 12 Jun 2026 expires Jun 2027 | checking… |  |
| 2026 | a21.life | 14 Jun 2026 | Jun 2027 | GoDaddy.com, LLC | 14 Jun 2026 expires Jun 2027 | checking… |  |
| 2026 | a21.live | 17 Jun 2026 | Jun 2027 | Dynadot Inc | 17 Jun 2026 expires Jun 2027 | checking… |  |
| 2026 | a21.click | 25 Jun 2026 | Jun 2027 | Dynadot, LLC | 25 Jun 2026 expires Jun 2027 | checking… |  |
| 2026 | a21.today | 25 Jun 2026 | Jun 2027 | Dynadot Inc | 25 Jun 2026 expires Jun 2027 | checking… |  |
| 2026 | a21.wine | 3 Jul 2026 | Jul 2027 | Dynadot Inc | 3 Jul 2026 expires Jul 2027 | checking… |  |
| 2026 | a21.group | 29 Jul 2026 | Jul 2027 | HOSTINGER operations, UAB | 29 Jul 2026 expires Jul 2027 | checking… |  |
| 2026 | a21.video | 30 Sep 2026 | Sep 2027 | Name.com, Inc | 30 Sep 2026 expires Sep 2027 | checking… |  |
| 2026 | a21.uk | 5 Oct 2026 | Oct 2027 | Pan Domains Limited | 5 Oct 2026 expires Oct 2027 | checking… | |
| 2026 | a21.si | 6 Oct 2026 | Oct 2027 | HOSTING CONCEPTS B.V. | 6 Oct 2026 expires Oct 2027 | checking… |  |
| — | a21.ae | no date on record | — | — | no date on record | checking… |  |
| — | a21.at | no date on record | — | World4You Internet Services G… | no date on record | checking… | |
| — | a21.au | no date on record | — | — | no date on record | checking… |  |
| — | a21.be | no date on record | — | — | no date on record | checking… | |
| — | a21.bg | no date on record | — | — | no date on record | checking… |  |
| — | a21.by | no date on record | — | — | no date on record | checking… |  |
| — | a21.bz | no date on record | — | — | no date on record | checking… | |
| — | a21.cat | no date on record | — | — | no date on record | checking… | |
| — | a21.ch | no date on record | — | — | no date on record | checking… |  |
| — | a21.club | no date on record | — | — | no date on record | checking… |  |
| — | a21.cn | no date on record | — | 北京新网数码信息技术有限公司 | no date on record | checking… |  |
| — | a21.co.kr | no date on record | — | — | no date on record | checking… |  |
| — | a21.co.za | no date on record | — | — | no date on record | checking… | |
| — | a21.com.ar | no date on record | — | — | no date on record | checking… | |
| — | a21.com.au | no date on record | — | — | no date on record | checking… |  |
| — | a21.com.cn | no date on record | — | 郑州世纪创联电子科技开发有限公司 | no date on record | checking… |  |
| — | a21.com.hk | no date on record | — | — | no date on record | checking… |  |
| — | a21.com.mx | no date on record | Dec 2026 | Name.com LLC | no date on record expires Dec 2026 | checking… |  |
| — | a21.com.ph | no date on record | — | — | no date on record | checking… | |
| — | a21.de | no date on record | — | — | no date on record | checking… |  |
| — | a21.dk | no date on record | — | ONE.COM A/S | no date on record | checking… |  |
| — | a21.es | no date on record | — | — | no date on record | checking… |  |
| — | a21.eu | no date on record | — | — | no date on record | checking… |  |
| — | a21.gay | no date on record | — | — | no date on record | checking… | |
| — | a21.gr | no date on record | — | — | no date on record | checking… |  |
| — | a21.hk | no date on record | — | — | no date on record | checking… |  |
| — | a21.hr | no date on record | — | — | no date on record | checking… | |
| — | a21.im | no date on record | Jun 2027 | — | no date on record expires Jun 2027 | checking… | |
| — | a21.ir | no date on record | — | — | no date on record | checking… | |
| — | a21.jp | no date on record | — | — | no date on record | checking… |  |
| — | a21.li | no date on record | — | — | no date on record | checking… |  |
| — | a21.ltd | no date on record | — | — | no date on record | checking… | |
| — | a21.ma | no date on record | — | — | no date on record | checking… |  |
| — | a21.mx | no date on record | Aug 2030 | Wingu Networks S.A de C.V. | no date on record expires Aug 2030 | checking… |  |
| — | a21.my | no date on record | — | — | no date on record | checking… |  |
| — | a21.nu | no date on record | — | — | no date on record | checking… |  |
| — | a21.org.au | no date on record | — | — | no date on record | checking… |  |
| — | a21.ph | no date on record | — | — | no date on record | checking… |  |
| — | a21.sk | no date on record | — | — | no date on record | checking… | |
| — | a21.software | no date on record | — | — | no date on record | checking… | |
| — | a21.su | no date on record | — | — | no date on record | checking… |  |
| — | a21.tm | no date on record | — | — | no date on record | checking… |  |
| — | a21.top | no date on record | — | — | no date on record | checking… | |
| — | a21.vc | no date on record | — | — | no date on record | checking… |  |
Seen before, not in DNS now
These names were registered when we last saw them, but they have no nameservers today. They may have lapsed, or be registered and parked without DNS. Not in DNS does not mean free: only the registry can say that.
| Year | Domain | Registered | Expires | Registrar | Details | DNS today | Screenshot |
|---|
How to read this
Registered is the creation date in the registry's own record (WHOIS or RDAP) when we last looked. A name that lapsed and was registered again shows its newest registration.
No date on record means we do not have the date yet, or the registry does not publish one. Missing years fill in over time, and so do registrations we have not seen yet.
Not in DNS means the name has no nameservers today. It never means the name is free to register: only a registry can tell you that.