Every extension, oldest first
siis
We have seen siis registered in 80 extensions. The oldest is siis.co.jp, registered on 28 Oct 1998; the newest, siis.info, on 26 Sep 2026.
Checking which of them answer in DNS today…
- Seen in
- 80 extensions
- Oldest
- 1998 siis.co.jp
- Newest
- 2026 siis.info
- In DNS today
- … checking
Registered in
| Year | Domain | Registered | Expires | Registrar | Details | DNS today | Screenshot |
|---|---|---|---|---|---|---|---|
| 1998 | siis.co.jp | 28 Oct 1998 | Oct 2026 (passed) | — | 28 Oct 1998 expiry Oct 2026 (passed) | checking… | |
| 2000 | siis.com | 8 Feb 2000 | Feb 2027 | NAMECHEAP INC | 8 Feb 2000 expires Feb 2027 | checking… |  |
| 2000 | siis.net | 10 Feb 2000 | Feb 2027 | DonDominio (SCIP) | 10 Feb 2000 expires Feb 2027 | checking… |  |
| 2003 | siis.org | 26 Jul 2003 | Jul 2027 | Moniker Online Services LLC | 26 Jul 2003 expires Jul 2027 | checking… | |
| 2004 | siis.co.uk | 21 Mar 2004 | Mar 2027 | Cloudflare, Inc. | 21 Mar 2004 expires Mar 2027 | checking… |  |
| 2004 | siis.it | 1 Jun 2004 | Jun 2027 | Register S.p.a. | 1 Jun 2004 expires Jun 2027 | checking… |  |
| 2007 | siis.si | 23 Jul 2007 | Jul 2027 | Center ERM d.o.o. | 23 Jul 2007 expires Jul 2027 | checking… | |
| 2008 | siis.fr | 14 Feb 2008 | Mar 2029 | OVH | 14 Feb 2008 expires Mar 2029 | checking… | |
| 2009 | siis.in | 10 Jul 2009 | Jul 2029 | Rediff.com India Limited | 10 Jul 2009 expires Jul 2029 | checking… |  |
| 2010 | siis.org.pl | 8 Mar 2010 | Mar 2027 | nazwa.pl sp. z o.o. | 8 Mar 2010 expires Mar 2027 | checking… |  |
| 2010 | siis.com.cn | 22 Apr 2010 | Apr 2027 | 浙江贰贰网络有限公司 | 22 Apr 2010 expires Apr 2027 | checking… | |
| 2013 | siis.com.ar | 11 Sep 2013 | Feb 2027 | nicar | 11 Sep 2013 expires Feb 2027 | checking… |  |
| 2015 | siis.pro | 30 Dec 2015 | Dec 2026 | Regional Network Information… | 30 Dec 2015 expires Dec 2026 | checking… | |
| 2016 | siis.co.kr | 29 Sep 2016 | Sep 2028 | — | 29 Sep 2016 expires Sep 2028 | checking… | |
| 2016 | siis.ca | 17 Oct 2016 | Oct 2027 | Go Daddy Domains Canada, Inc | 17 Oct 2016 expires Oct 2027 | checking… |  |
| 2017 | siis.cloud | 10 Apr 2017 | Apr 2027 | Tucows Domains Inc. | 10 Apr 2017 expires Apr 2027 | checking… |  |
| 2017 | siis.cc | 23 May 2017 | May 2026 (passed) | DropCatch.com 832 LLC | 23 May 2017 expiry May 2026 (passed) | checking… |  |
| 2017 | siis.com.mx | 31 Jul 2017 | Jul 2027 | Telmex | 31 Jul 2017 expires Jul 2027 | checking… | |
| 2017 | siis.com.ua | 9 Aug 2017 | Aug 2034 | PE Rules | 9 Aug 2017 expires Aug 2034 | checking… |  |
| 2019 | siis.co.in | 8 Jan 2019 | Jan 2028 | GoDaddy | 8 Jan 2019 expires Jan 2028 | checking… |  |
| 2019 | siis.design | 25 Jan 2019 | Jan 2027 | Squarespace Domains II LLC | 25 Jan 2019 expires Jan 2027 | checking… |  |
| 2020 | siis.fi | 24 Aug 2020 | — | — | 24 Aug 2020 | checking… |  |
| 2021 | siis.io | 10 Feb 2021 | Feb 2027 | ENOM, INC. | 10 Feb 2021 expires Feb 2027 | checking… | |
| 2021 | siis.se | 24 Apr 2021 | Apr 2027 | Web Lovers AB | 24 Apr 2021 expires Apr 2027 | checking… |  |
| 2022 | siis.xyz | 25 Apr 2022 | Apr 2027 | Spaceship, Inc. | 25 Apr 2022 expires Apr 2027 | checking… | |
| 2022 | siis.site | 13 Aug 2022 | Aug 2027 | GoDaddy.com, LLC | 13 Aug 2022 expires Aug 2027 | checking… |  |
| 2024 | siis.institute | 17 Nov 2024 | Nov 2026 | Key-Systems GmbH | 17 Nov 2024 expires Nov 2026 | checking… |  |
| 2025 | siis.ai | 4 Apr 2025 | Apr 2027 | GoDaddy.com, LLC | 4 Apr 2025 expires Apr 2027 | checking… |  |
| 2025 | siis.as | 5 Jul 2025 | Jul 2026 (passed) | Live Oak Holding | 5 Jul 2025 expiry Jul 2026 (passed) | checking… | |
| 2025 | siis.co.zm | 15 Jul 2025 | Jul 2026 (passed) | 18673-zicta | 15 Jul 2025 expiry Jul 2026 (passed) | checking… |  |
| 2025 | siis.store | 13 Nov 2025 | Nov 2026 | GoDaddy.com, LLC | 13 Nov 2025 expires Nov 2026 | checking… | |
| 2025 | siis.fun | 18 Nov 2025 | Nov 2026 | Alibaba Cloud Computing Ltd.… | 18 Nov 2025 expires Nov 2026 | checking… |  |
| 2026 | siis.app | 25 Jan 2026 | Jan 2027 | NAMECHEAP INC | 25 Jan 2026 expires Jan 2027 | checking… |  |
| 2026 | siis.uk | 18 Feb 2026 | Feb 2027 | GoDaddy.com, LLC. | 18 Feb 2026 expires Feb 2027 | checking… |  |
| 2026 | siis.click | 12 Mar 2026 | Mar 2027 | HOSTINGER operations, UAB | 12 Mar 2026 expires Mar 2027 | checking… |  |
| 2026 | siis.us | 1 Apr 2026 | Apr 2027 | Spaceship, Inc. | 1 Apr 2026 expires Apr 2027 | checking… | |
| 2026 | siis.uz | 8 Apr 2026 | Apr 2027 | SUVAN NET | 8 Apr 2026 expires Apr 2027 | checking… |  |
| 2026 | siis.me | 14 Jun 2026 | Jun 2027 | Alibaba Cloud Computing Ltd.… | 14 Jun 2026 expires Jun 2027 | checking… | |
| 2026 | siis.online | 19 Jul 2026 | Jul 2027 | GoDaddy.com, LLC | 19 Jul 2026 expires Jul 2027 | checking… | |
| 2026 | siis.ml | 27 Jul 2026 | Jul 2027 | MICROTICS | 27 Jul 2026 expires Jul 2027 | checking… |  |
| 2026 | siis.info | 26 Sep 2026 | Sep 2027 | Name.com, Inc | 26 Sep 2026 expires Sep 2027 | checking… |  |
| — | siis.ar | no date on record | — | — | no date on record | checking… |  |
| — | siis.ch | no date on record | — | — | no date on record | checking… |  |
| — | siis.cl | no date on record | — | — | no date on record | checking… | |
| — | siis.cn | no date on record | — | — | no date on record | checking… | |
| — | siis.co | no date on record | — | — | no date on record | checking… | |
| — | siis.co.th | no date on record | — | — | no date on record | checking… |  |
| — | siis.com.au | no date on record | — | — | no date on record | checking… | |
| — | siis.com.pe | no date on record | — | — | no date on record | checking… |  |
| — | siis.com.tr | no date on record | — | — | no date on record | checking… |  |
| — | siis.de | no date on record | — | — | no date on record | checking… | |
| — | siis.ee | no date on record | — | — | no date on record | checking… |  |
| — | siis.es | no date on record | — | — | no date on record | checking… | |
| — | siis.eu | no date on record | — | — | no date on record | checking… |  |
| — | siis.expert | no date on record | — | — | no date on record | checking… | |
| — | siis.gov.py | no date on record | — | — | no date on record | checking… | |
| — | siis.is | no date on record | — | — | no date on record | checking… | |
| — | siis.jp | no date on record | — | — | no date on record | checking… | |
| — | siis.kr | no date on record | — | — | no date on record | checking… | |
| — | siis.lk | no date on record | — | — | no date on record | checking… |  |
| — | siis.ltd | no date on record | — | — | no date on record | checking… | |
| — | siis.mobi | no date on record | — | — | no date on record | checking… |  |
| — | siis.mx | no date on record | — | — | no date on record | checking… | |
| — | siis.net.cn | no date on record | — | 阿里云计算有限公司（万网） | no date on record | checking… |  |
| — | siis.net.co | no date on record | — | — | no date on record | checking… |  |
| — | siis.nl | no date on record | — | — | no date on record | checking… |  |
| — | siis.org.cn | no date on record | — | — | no date on record | checking… | |
| — | siis.ovh | no date on record | — | — | no date on record | checking… |  |
| — | siis.ph | no date on record | — | — | no date on record | checking… | |
| — | siis.pl | no date on record | — | — | no date on record | checking… |  |
| — | siis.ro | no date on record | — | — | no date on record | checking… |  |
| — | siis.rs.gov.br | no date on record | — | — | no date on record | checking… |  |
| — | siis.ru | no date on record | — | — | no date on record | checking… | |
| — | siis.sale | no date on record | — | — | no date on record | checking… |  |
| — | siis.skin | no date on record | — | — | no date on record | checking… | |
| — | siis.solutions | no date on record | — | — | no date on record | checking… | |
| — | siis.sv | no date on record | — | — | no date on record | checking… |  |
| — | siis.top | no date on record | — | — | no date on record | checking… |  |
| — | siis.ws | no date on record | — | — | no date on record | checking… | |
| — | siis.xin | 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.