Checked in the last 30 daysOlder, dated recordFrom registration records
On AboutUs since 2012 · 2 registrar changes since Mar 28, 2009 · no registrant change on record since 2009.
Registration
No registration date on file yet. AboutUs reads it from RDAP when the site is checked.
AboutUs record
AboutUs wiki pageOct 15, 2012An AboutUs wiki page described po.st from Oct 15, 2012 to Oct 15, 2012 (1 edit).Source: AboutUs wiki archive, 2006–2023
Registrar
ST RegistryMar 28, 2009 – Sep 28, 2010Registrar ST Registry in the WHOIS and RDAP records held for po.st, from Mar 28, 2009 to Sep 28, 2010.Source: WHOIS / RDAP archive (who.is)Bahnhof ABNov 10, 2010 – Dec 28, 2011Registrar Bahnhof AB in the WHOIS and RDAP records held for po.st, from Nov 10, 2010 to Dec 28, 2011.Source: WHOIS / RDAP archive (who.is)
Registrant
Registrant recordsMar 28, 2009 – May 26, 2026Registration records for po.st are held from Mar 28, 2009 to May 26, 2026 (367 records). None shows a change of registrant. Privacy-service and redaction changes, renames of the same organization and new contacts at it are not counted.Source: WHOIS / RDAP archive (who.is); counted by registrant name and organization only
No registrant changes recorded, 2009–2026
Zone file
Nameservers: po.stMar 28, 2009Registration records listed po.st nameservers (ns1.po.st, ns2.po.st) for po.st from Mar 28, 2009 to Mar 28, 2009.Source: From registration records (WHOIS / RDAP archive, who.is)Nameservers: solutionpark.chJul 14, 2009 – Aug 13, 2009
Certificate
Let's EncryptMay 5, 2026 – Nov 15, 2026Let's Encrypt issued 28 certificates for po.st from May 5, 2026, the latest valid until Jan 2, 2027.Source: Certificate Transparency logs (AboutUs's own certificate-log reader)
2010201520202025Apr ’26← last 12 months, drawn wider
Every dated fact on this lifeline (19)
Mar 28, 2009 – Sep 28, 2010Registrar: Registrar ST Registry in the WHOIS and RDAP records held for po.st, from Mar 28, 2009 to Sep 28, 2010.Source: WHOIS / RDAP archive (who.is)
Mar 28, 2009 – May 26, 2026Registrant: Registration records for po.st are held from Mar 28, 2009 to May 26, 2026 (367 records). None shows a change of registrant. Privacy-service and redaction changes, renames of the same organization and new contacts at it are not counted.Source: WHOIS / RDAP archive (who.is); counted by registrant name and organization only
Mar 28, 2009Zone file: Registration records listed po.st nameservers (ns1.po.st, ns2.po.st) for po.st from Mar 28, 2009 to Mar 28, 2009.Source: From registration records (WHOIS / RDAP archive, who.is)
Jul 14, 2009 – Aug 13, 2009Zone file: Registration records listed solutionpark.ch nameservers (ns1.solutionpark.ch, ns2.solutionpark.ch) for po.st from Jul 14, 2009 to Aug 13, 2009.Source: From registration records (WHOIS / RDAP archive, who.is)
Jul 14, 2009Zone file: po.st's nameservers moved from po.st to solutionpark.ch at some point between Mar 28, 2009 and Jul 14, 2009. Last seen at po.st: Mar 28, 2009 (registration record). First seen at solutionpark.ch: Jul 14, 2009 (registration record). AboutUs holds no nameserver records for the 4 months in between, so the date of the move is not known more closely.
Automated safety checks
DNS (passed)
HTTPS (failed)
Make sure the site responds over HTTPS with a valid certificate.
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Current facts
Latest available measurements; dated entries retain their dates. These are measurements, not an endorsement of the site.
not yet retrieved
Registrar and registration date not retrieved yet — we retry on every view.
ST RegistryST RegistryMar 7, 2012 – May 26, 2026 (latest)Registrar ST Registry in the WHOIS and RDAP records held for po.st, from Mar 7, 2012 to May 26, 2026.Source: WHOIS / RDAP archive (who.is)
Registration records listed solutionpark.ch nameservers (ns1.solutionpark.ch, ns2.solutionpark.ch) for po.st from Jul 14, 2009 to Aug 13, 2009.
Source: From registration records (WHOIS / RDAP archive, who.is)
DNS moved to solutionpark.chJul 14, 2009po.st's nameservers moved from po.st to solutionpark.ch at some point between Mar 28, 2009 and Jul 14, 2009. Last seen at po.st: Mar 28, 2009 (registration record). First seen at solutionpark.ch: Jul 14, 2009 (registration record). AboutUs holds no nameserver records for the 4 months in between, so the date of the move is not known more closely.Source: Derived from the nameserver records on this lifeline (registration record → registration record)
Nameservers: 140ware.comOct 21, 2009 – Sep 12, 2011Registration records listed 140ware.com nameservers (ns1.140ware.com, ns2.140ware.com) for po.st from Oct 21, 2009 to Sep 12, 2011.Source: From registration records (WHOIS / RDAP archive, who.is)
DNS moved to 140ware.comOct 21, 2009po.st's nameservers moved from solutionpark.ch to 140ware.com at some point between Aug 13, 2009 and Oct 21, 2009. Last seen at solutionpark.ch: Aug 13, 2009 (registration record). First seen at 140ware.com: Oct 21, 2009 (registration record). AboutUs holds no nameserver records for the 2 months in between, so the date of the move is not known more closely.Source: Derived from the nameserver records on this lifeline (registration record → registration record)
Nameservers: UltraDNS (Neustar/Vercara)Nameservers: UltraDNS (Neustar/Vercara)Nov 2, 2011 – Aug 15, 2019Registration records listed UltraDNS (Neustar/Vercara) nameservers (pdns1.ultradns.net, pdns2.ultradns.net) for po.st from Nov 2, 2011 to Aug 15, 2019.Source: From registration records (WHOIS / RDAP archive, who.is)
DNS moved to UltraDNS (Neustar/Vercara)Nov 2, 2011po.st's nameservers moved from 140ware.com to UltraDNS (Neustar/Vercara) at some point between Sep 12, 2011 and Nov 2, 2011. Last seen at 140ware.com: Sep 12, 2011 (registration record). First seen at UltraDNS (Neustar/Vercara): Nov 2, 2011 (registration record). AboutUs holds no nameserver records for the 51 days in between, so the date of the move is not known more closely.Source: Derived from the nameserver records on this lifeline (registration record → registration record)
Nameservers: NS1Sep 16, 2019 – Aug 9, 2020Registration records listed NS1 nameservers (dns1.p04.nsone.net, dns2.p04.nsone.net, dns3.p04.nsone.net…) for po.st from Sep 16, 2019 to Aug 9, 2020.Source: From registration records (WHOIS / RDAP archive, who.is)
DNS moved to NS1Sep 16, 2019po.st's nameservers moved from UltraDNS (Neustar/Vercara) to NS1 between Aug 15, 2019 and Sep 16, 2019. Last seen at UltraDNS (Neustar/Vercara): Aug 15, 2019 (registration record). First seen at NS1: Sep 16, 2019 (registration record).Source: Derived from the nameserver records on this lifeline (registration record → registration record)
Nameservers: CloudflareNameservers: CloudflareSep 8, 2020 – Nov 30, 2025Registration records listed Cloudflare nameservers (jack.ns.cloudflare.com, liz.ns.cloudflare.com) for po.st from Sep 8, 2020 to Nov 30, 2025.Source: From registration records (WHOIS / RDAP archive, who.is)
DNS moved to CloudflareSep 8, 2020po.st's nameservers moved from NS1 to Cloudflare between Aug 9, 2020 and Sep 8, 2020. Last seen at NS1: Aug 9, 2020 (registration record). First seen at Cloudflare: Sep 8, 2020 (registration record).Source: Derived from the nameserver records on this lifeline (registration record → registration record)
Nameservers: parkingcrew.netJan 2, 2026 – May 26, 2026Registration records listed parkingcrew.net nameservers (ns1.parkingcrew.net, ns2.parkingcrew.net) for po.st from Jan 2, 2026 to May 26, 2026.Source: From registration records (WHOIS / RDAP archive, who.is)
DNS moved to parkingcrew.netJan 2, 2026po.st's nameservers moved from Cloudflare to parkingcrew.net between Nov 30, 2025 and Jan 2, 2026. Last seen at Cloudflare: Nov 30, 2025 (registration record). First seen at parkingcrew.net: Jan 2, 2026 (registration record).Source: Derived from the nameserver records on this lifeline (registration record → registration record)
Source: Derived from the nameserver records on this lifeline (registration record → registration record)
Oct 21, 2009 – Sep 12, 2011Zone file: Registration records listed 140ware.com nameservers (ns1.140ware.com, ns2.140ware.com) for po.st from Oct 21, 2009 to Sep 12, 2011.Source: From registration records (WHOIS / RDAP archive, who.is)
Oct 21, 2009Zone file: po.st's nameservers moved from solutionpark.ch to 140ware.com at some point between Aug 13, 2009 and Oct 21, 2009. Last seen at solutionpark.ch: Aug 13, 2009 (registration record). First seen at 140ware.com: Oct 21, 2009 (registration record). AboutUs holds no nameserver records for the 2 months in between, so the date of the move is not known more closely.Source: Derived from the nameserver records on this lifeline (registration record → registration record)
Nov 10, 2010 – Dec 28, 2011Registrar: Registrar Bahnhof AB in the WHOIS and RDAP records held for po.st, from Nov 10, 2010 to Dec 28, 2011.Source: WHOIS / RDAP archive (who.is)
Nov 2, 2011 – Aug 15, 2019Zone file: Registration records listed UltraDNS (Neustar/Vercara) nameservers (pdns1.ultradns.net, pdns2.ultradns.net) for po.st from Nov 2, 2011 to Aug 15, 2019.Source: From registration records (WHOIS / RDAP archive, who.is)
Nov 2, 2011Zone file: po.st's nameservers moved from 140ware.com to UltraDNS (Neustar/Vercara) at some point between Sep 12, 2011 and Nov 2, 2011. Last seen at 140ware.com: Sep 12, 2011 (registration record). First seen at UltraDNS (Neustar/Vercara): Nov 2, 2011 (registration record). AboutUs holds no nameserver records for the 51 days in between, so the date of the move is not known more closely.Source: Derived from the nameserver records on this lifeline (registration record → registration record)
Mar 7, 2012 – May 26, 2026Registrar: Registrar ST Registry in the WHOIS and RDAP records held for po.st, from Mar 7, 2012 to May 26, 2026.Source: WHOIS / RDAP archive (who.is)
Oct 15, 2012AboutUs record: An AboutUs wiki page described po.st from Oct 15, 2012 to Oct 15, 2012 (1 edit).Source: AboutUs wiki archive, 2006–2023
Sep 16, 2019 – Aug 9, 2020Zone file: Registration records listed NS1 nameservers (dns1.p04.nsone.net, dns2.p04.nsone.net, dns3.p04.nsone.net…) for po.st from Sep 16, 2019 to Aug 9, 2020.Source: From registration records (WHOIS / RDAP archive, who.is)
Sep 16, 2019Zone file: po.st's nameservers moved from UltraDNS (Neustar/Vercara) to NS1 between Aug 15, 2019 and Sep 16, 2019. Last seen at UltraDNS (Neustar/Vercara): Aug 15, 2019 (registration record). First seen at NS1: Sep 16, 2019 (registration record).Source: Derived from the nameserver records on this lifeline (registration record → registration record)
Sep 8, 2020 – Nov 30, 2025Zone file: Registration records listed Cloudflare nameservers (jack.ns.cloudflare.com, liz.ns.cloudflare.com) for po.st from Sep 8, 2020 to Nov 30, 2025.Source: From registration records (WHOIS / RDAP archive, who.is)
Sep 8, 2020Zone file: po.st's nameservers moved from NS1 to Cloudflare between Aug 9, 2020 and Sep 8, 2020. Last seen at NS1: Aug 9, 2020 (registration record). First seen at Cloudflare: Sep 8, 2020 (registration record).Source: Derived from the nameserver records on this lifeline (registration record → registration record)
Jan 2, 2026 – May 26, 2026Zone file: Registration records listed parkingcrew.net nameservers (ns1.parkingcrew.net, ns2.parkingcrew.net) for po.st from Jan 2, 2026 to May 26, 2026.Source: From registration records (WHOIS / RDAP archive, who.is)
Jan 2, 2026Zone file: po.st's nameservers moved from Cloudflare to parkingcrew.net between Nov 30, 2025 and Jan 2, 2026. Last seen at Cloudflare: Nov 30, 2025 (registration record). First seen at parkingcrew.net: Jan 2, 2026 (registration record).Source: Derived from the nameserver records on this lifeline (registration record → registration record)
May 5, 2026 – Nov 15, 2026Certificate: Let's Encrypt issued 28 certificates for po.st from May 5, 2026, the latest valid until Jan 2, 2027.Source: Certificate Transparency logs (AboutUs's own certificate-log reader)
Authority: not enough signals yet
Not enough signals yet
Why we're not scoring this yet
We withhold an authority number until independent evidence (global rank, link-graph presence) has accrued. The facts we do have about this site are shown below — we'd rather say “not enough signals yet” than invent a low score.
Site history
Dated record — historical facts always carry their date.