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calculator.academy
Verifying against the live site and live WHOIS/DNS…
Common questions
Is calculator.academy legit or a scam?
calculator.academy was registered Apr 5, 2019 (7 years old), per public registration records. AboutUs doesn't label sites "legit" or "a scam": this page lists the dated registration, DNS, HTTPS, mail-authentication and safety checks we could verify, each with its source, so you can decide for yourself.
Who owns calculator.academy?
Nobody has completed AboutUs's owner verification for calculator.academy. That's true of most sites here — it isn't itself a warning sign.
When was calculator.academy registered?
calculator.academy's registration dates to Apr 5, 2019 (7 years old), per public registration records. Automattic Inc. is the registrar on record today.
Checked in the last 30 daysOlder, dated recordFrom registration records
Registered 7 years ago · one registrar since Nov 24, 2019 · no ownership change on record since 2019 · last checked Oct 9, 2026.
Registration
RegisteredApr 5, 2019calculator.academy was registered on Apr 5, 2019.Source: RDAP, fetched Oct 9, 2026
AboutUs record
Current AboutUs recordJul 18, 2026 – Oct 9, 2026 (latest)Authority and Safety last refreshed Oct 9, 2026.Source: AboutUs checks
Registrar
Automattic Inc.Automattic Inc.Nov 24, 2019 – Oct 27, 2026 (latest)Registrar Automattic Inc. (IANA 1531) in the registration data recorded, first on Nov 24, 2019 and most recently on Oct 27, 2026.Source: RDAP, fetched Oct 9, 2026
Ownership
Ownership recordsNov 24, 2019 – Jan 14, 2026Registration records for calculator.academy are held from Nov 24, 2019 to Jan 14, 2026 (37 records). None shows a change of registrant. Privacy-service and redaction changes are not counted.Source: WHOIS / RDAP archive (who.is); counted by registrant name and organization only
No ownership changes recorded, 2019–2026
Zone file
No nameserver records held, Sep 2016 – Nov 2019No nameserver records held, Sep 2016 – Nov 2019No nameserver records held, Nov 2019 – Aug 2020Nameservers: internettraffic.comDec 17, 2015 – Mar 10, 2016internettraffic.com (buy.internettraffic.com, sell.internettraffic.com) were the nameservers listed for calculator.academy at every ICANN zone-file snapshot AboutUs holds from Dec 17, 2015 to Mar 10, 2016 (snapshots exist for only part of 2013–2018).
Certificate
Google Trust ServicesMay 9, 2026 – Oct 27, 2026Google Trust Services issued 6 certificates for calculator.academy from May 9, 2026, the latest valid until Jan 3, 2027.Source: Certificate Transparency logs (AboutUs's own certificate-log reader)
20162018202020222024Jan ’26Oct ’26← last 12 months, drawn wider
Every dated fact on this lifeline (19)
Dec 17, 2015 – Mar 10, 2016Zone file: internettraffic.com (buy.internettraffic.com, sell.internettraffic.com) were the nameservers listed for calculator.academy at every ICANN zone-file snapshot AboutUs holds from Dec 17, 2015 to Mar 10, 2016 (snapshots exist for only part of 2013–2018).Source: ICANN zone-file snapshots, 2013–2018 (legacy archive)
Mar 11, 2016 – Apr 7, 2016Zone file: cashparking.com (ns01.cashparking.com, ns02.cashparking.com) were the nameservers listed for calculator.academy at every ICANN zone-file snapshot AboutUs holds from Mar 11, 2016 to Apr 7, 2016 (snapshots exist for only part of 2013–2018).Source: ICANN zone-file snapshots, 2013–2018 (legacy archive)
Mar 11, 2016Zone file: calculator.academy's nameservers moved from internettraffic.com to cashparking.com between Mar 10, 2016 and Mar 11, 2016. Last seen at internettraffic.com: Mar 10, 2016 (ICANN zone-file snapshot). First seen at cashparking.com: Mar 11, 2016 (ICANN zone-file snapshot).Source: Derived from the nameserver records on this lifeline (ICANN zone-file snapshot → ICANN zone-file snapshot)
Sep 3, 2016Zone file: GoDaddy (ns35.domaincontrol.com, ns36.domaincontrol.com) were the nameservers listed for calculator.academy at every ICANN zone-file snapshot AboutUs holds from Sep 3, 2016 to Sep 3, 2016 (snapshots exist for only part of 2013–2018).Source: ICANN zone-file snapshots, 2013–2018 (legacy archive)
Sep 3, 2016
Automated safety checks
DNS (passed)
HTTPS (passed)
Page metadata (passed)
Security headers (failed)
Add the HSTS, Content-Security-Policy, and X-Frame-Options response headers.
AboutUs has not vetted this site. Everything below is what we could measure automatically. Anything you do on the site — paying, sharing personal details, downloading — is between you and the site, not AboutUs.
Current facts
Latest available measurements; dated entries retain their dates. These are measurements, not an endorsement of the site.
Nameservers: cashparking.comMar 11, 2016 – Apr 7, 2016cashparking.com (ns01.cashparking.com, ns02.cashparking.com) were the nameservers listed for calculator.academy at every ICANN zone-file snapshot AboutUs holds from Mar 11, 2016 to Apr 7, 2016 (snapshots exist for only part of 2013–2018).Source: ICANN zone-file snapshots, 2013–2018 (legacy archive)
DNS moved to cashparking.comMar 11, 2016calculator.academy's nameservers moved from internettraffic.com to cashparking.com between Mar 10, 2016 and Mar 11, 2016. Last seen at internettraffic.com: Mar 10, 2016 (ICANN zone-file snapshot). First seen at cashparking.com: Mar 11, 2016 (ICANN zone-file snapshot).Source: Derived from the nameserver records on this lifeline (ICANN zone-file snapshot → ICANN zone-file snapshot)
Nameservers: GoDaddySep 3, 2016GoDaddy (ns35.domaincontrol.com, ns36.domaincontrol.com) were the nameservers listed for calculator.academy at every ICANN zone-file snapshot AboutUs holds from Sep 3, 2016 to Sep 3, 2016 (snapshots exist for only part of 2013–2018).Source: ICANN zone-file snapshots, 2013–2018 (legacy archive)
DNS moved to GoDaddySep 3, 2016calculator.academy's nameservers moved from cashparking.com to GoDaddy at some point between Apr 7, 2016 and Sep 3, 2016. Last seen at cashparking.com: Apr 7, 2016 (ICANN zone-file snapshot). First seen at GoDaddy: Sep 3, 2016 (ICANN zone-file snapshot). AboutUs holds no nameserver records for the 5 months in between, so the date of the move is not known more closely.Source: Derived from the nameserver records on this lifeline (ICANN zone-file snapshot → ICANN zone-file snapshot)
Nameservers: wordpress.comNov 24, 2019Registration records listed wordpress.com nameservers (ns1.wordpress.com, ns2.wordpress.com, ns3.wordpress.com) for calculator.academy from Nov 24, 2019 to Nov 24, 2019.Source: From registration records (WHOIS / RDAP archive, who.is)
DNS moved to wordpress.comNov 24, 2019calculator.academy's nameservers moved from GoDaddy to wordpress.com at some point between Sep 3, 2016 and Nov 24, 2019. Last seen at GoDaddy: Sep 3, 2016 (ICANN zone-file snapshot). First seen at wordpress.com: Nov 24, 2019 (registration record). AboutUs holds no nameserver records for the about 3 years in between, so the date of the move is not known more closely.Source: Derived from the nameserver records on this lifeline (ICANN zone-file snapshot → registration record)
Nameservers: ezoicns.comAug 4, 2020 – Dec 18, 2020Registration records listed ezoicns.com nameservers (baboon.ezoicns.com, bonobo.ezoicns.com, serval.ezoicns.com) for calculator.academy from Aug 4, 2020 to Dec 18, 2020.Source: From registration records (WHOIS / RDAP archive, who.is)
DNS moved to ezoicns.comAug 4, 2020calculator.academy's nameservers moved from wordpress.com to ezoicns.com at some point between Nov 24, 2019 and Aug 4, 2020. Last seen at wordpress.com: Nov 24, 2019 (registration record). First seen at ezoicns.com: Aug 4, 2020 (registration record). AboutUs holds no nameserver records for the 8 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: CloudflareNameservers: CloudflareApr 8, 2021 – Jan 14, 2026Registration records listed Cloudflare nameservers (mitch.ns.cloudflare.com, ruth.ns.cloudflare.com) for calculator.academy from Apr 8, 2021 to Jan 14, 2026.Source: From registration records (WHOIS / RDAP archive, who.is)
DNS moved to CloudflareApr 8, 2021calculator.academy's nameservers moved from ezoicns.com to Cloudflare at some point between Dec 18, 2020 and Apr 8, 2021. Last seen at ezoicns.com: Dec 18, 2020 (registration record). First seen at Cloudflare: Apr 8, 2021 (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)
Seen in the .academy zone fileJul 28, 2026 – Jul 29, 2026 (latest)First seen in the .academy zone file records AboutUs holds on Jul 28, 2026; latest sighting Jul 29, 2026.Source: ICANN CZDS zone file
SSL Corporation
Aug 2, 2026 – Oct 27, 2026
SSL Corporation issued 4 certificates for calculator.academy from Aug 2, 2026, the latest valid until Dec 30, 2026.
Source: Certificate Transparency logs (AboutUs's own certificate-log reader)
Certificate from Google Trust ServicesJul 7, 2026 – Oct 5, 2026Google Trust Services certificate valid Jul 7, 2026 to Oct 5, 2026 (expired); the date it was observed was not recorded.Source: TLS check (observation date not recorded)
Zone file: calculator.academy's nameservers moved from cashparking.com to GoDaddy at some point between Apr 7, 2016 and Sep 3, 2016. Last seen at cashparking.com: Apr 7, 2016 (ICANN zone-file snapshot). First seen at GoDaddy: Sep 3, 2016 (ICANN zone-file snapshot). AboutUs holds no nameserver records for the 5 months in between, so the date of the move is not known more closely.Source: Derived from the nameserver records on this lifeline (ICANN zone-file snapshot → ICANN zone-file snapshot)
Apr 5, 2019Registration: calculator.academy was registered on Apr 5, 2019.Source: RDAP, fetched Oct 9, 2026
Nov 24, 2019 – Oct 27, 2026Registrar: Registrar Automattic Inc. (IANA 1531) in the registration data recorded, first on Nov 24, 2019 and most recently on Oct 27, 2026.Source: RDAP, fetched Oct 9, 2026
Nov 24, 2019 – Jan 14, 2026Ownership: Registration records for calculator.academy are held from Nov 24, 2019 to Jan 14, 2026 (37 records). None shows a change of registrant. Privacy-service and redaction changes are not counted.Source: WHOIS / RDAP archive (who.is); counted by registrant name and organization only
Nov 24, 2019Zone file: Registration records listed wordpress.com nameservers (ns1.wordpress.com, ns2.wordpress.com, ns3.wordpress.com) for calculator.academy from Nov 24, 2019 to Nov 24, 2019.Source: From registration records (WHOIS / RDAP archive, who.is)
Nov 24, 2019Zone file: calculator.academy's nameservers moved from GoDaddy to wordpress.com at some point between Sep 3, 2016 and Nov 24, 2019. Last seen at GoDaddy: Sep 3, 2016 (ICANN zone-file snapshot). First seen at wordpress.com: Nov 24, 2019 (registration record). AboutUs holds no nameserver records for the about 3 years in between, so the date of the move is not known more closely.Source: Derived from the nameserver records on this lifeline (ICANN zone-file snapshot → registration record)
Aug 4, 2020 – Dec 18, 2020Zone file: Registration records listed ezoicns.com nameservers (baboon.ezoicns.com, bonobo.ezoicns.com, serval.ezoicns.com) for calculator.academy from Aug 4, 2020 to Dec 18, 2020.Source: From registration records (WHOIS / RDAP archive, who.is)
Aug 4, 2020Zone file: calculator.academy's nameservers moved from wordpress.com to ezoicns.com at some point between Nov 24, 2019 and Aug 4, 2020. Last seen at wordpress.com: Nov 24, 2019 (registration record). First seen at ezoicns.com: Aug 4, 2020 (registration record). AboutUs holds no nameserver records for the 8 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)
Apr 8, 2021 – Jan 14, 2026Zone file: Registration records listed Cloudflare nameservers (mitch.ns.cloudflare.com, ruth.ns.cloudflare.com) for calculator.academy from Apr 8, 2021 to Jan 14, 2026.Source: From registration records (WHOIS / RDAP archive, who.is)
Apr 8, 2021Zone file: calculator.academy's nameservers moved from ezoicns.com to Cloudflare at some point between Dec 18, 2020 and Apr 8, 2021. Last seen at ezoicns.com: Dec 18, 2020 (registration record). First seen at Cloudflare: Apr 8, 2021 (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)
May 9, 2026 – Oct 27, 2026Certificate: Google Trust Services issued 6 certificates for calculator.academy from May 9, 2026, the latest valid until Jan 3, 2027.Source: Certificate Transparency logs (AboutUs's own certificate-log reader)
Jul 7, 2026 – Oct 5, 2026Certificate: Google Trust Services certificate valid Jul 7, 2026 to Oct 5, 2026 (expired); the date it was observed was not recorded.Source: TLS check (observation date not recorded)
Jul 18, 2026 – Oct 9, 2026AboutUs record: Authority and Safety last refreshed Oct 9, 2026.Source: AboutUs checks
Jul 28, 2026 – Jul 29, 2026Zone file: First seen in the .academy zone file records AboutUs holds on Jul 28, 2026; latest sighting Jul 29, 2026.Source: ICANN CZDS zone file
Aug 2, 2026 – Oct 27, 2026Certificate: SSL Corporation issued 4 certificates for calculator.academy from Aug 2, 2026, the latest valid until Dec 30, 2026.Source: Certificate Transparency logs (AboutUs's own certificate-log reader)
Domain registered Apr 5, 2019 — 7 years old.
latest result
Registrar on record: Automattic Inc. — unchanged since AboutUs began tracking (Aug 24, 2026).
Authority 36/100— ahead of 36% of the August 2026 scored sampleClear
Why this authority score
36 is a percentile: higher than 36% of sites we score.
How it's calculated
Prominence (Tranco rank #233,346)+6
Verified continuity: 7.6 years (RDAP registration)+7
Security & email hygiene+4
Calibration adjustment (published map)+4
Model score: 21/99 — what these reason lines add up to.
Published Authority (percentile): 36/100 — this site's rank against the August 2026 scored sample. Public Authority is capped at 99.
Safety evidence
Retained threat-feed result (recorded about 18 days ago); name-similarity check available (recorded about 18 days ago); 3/3 transport and email checks available (oldest recorded about 18 days ago). This is evidence coverage, not a probability that a website is safe.
No caution flags in the available scoring observations; this is not a complete safety assessment
Site history
Dated record — historical facts always carry their date.