Verifying against the live site and live WHOIS/DNS…
Common questions
Is iupac.org legit or a scam?
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 iupac.org?
Nobody has completed AboutUs's owner verification for iupac.org. That's true of most sites here — it isn't itself a warning sign.
Correct a description, link or other detail. Submissions are reviewed before publication.
3 of 4 safety checks passed (Oct 26, 2026).
Registered 1997 · site is live · HTTPS valid
The International Union of Pure and Applied Chemistry (IUPAC) is a scientific, international, non-governmental organization that advances the worldwide aspects of chemical sciences and contributes to the application of chemistry in service of global issues.
Checked in the last 30 daysOlder, dated recordFrom registration records
Registered 29 years ago · on AboutUs since 2013 · 2 registrar changes since Mar 13, 2014 · 1 ownership change since 2014 · last checked Aug 21, 2026.
Registration
RegisteredJul 10, 1997iupac.org was registered on Jul 10, 1997.Source: RDAP, fetched Aug 21, 2026
AboutUs record
AboutUs wiki pageNov 12, 2013An AboutUs wiki page described iupac.org from Nov 12, 2013 to Nov 12, 2013 (1 edit).Source: AboutUs wiki archive, 2006–2023Said about itself in 2013Jul 1, 2013
Registrar
Network Solutions, LLC (R63-LROR)Mar 13, 2014 – Mar 20, 2014Registrar Network Solutions, LLC (R63-LROR) in the WHOIS and RDAP records held for iupac.org, from Mar 13, 2014 to Mar 20, 2014.Source: WHOIS / RDAP archive (who.is)Network Solutions, LLCAug 30, 2016 – Dec 1, 2016
Ownership
Ownership recordsMar 13, 2014 – Mar 2, 2026Registration records for iupac.org are held from Mar 13, 2014 to Mar 2, 2026 (67 records). 1 change of registrant name or organization is marked. Privacy-service and redaction changes are not counted.Source: WHOIS / RDAP archive (who.is); counted by registrant name and organization only
Zone file
No nameserver records held, Dec 2016 – Apr 2018Nameservers: tqhosting.comMar 13, 2014 – Dec 1, 2016Registration records listed tqhosting.com nameservers (ns1.tqhosting.com, ns2.tqhosting.com, ns3.tqhosting.com) for iupac.org from Mar 13, 2014 to Dec 1, 2016.Source: From registration records (WHOIS / RDAP archive, who.is)
Certificate
Let's EncryptMar 29, 2026 – Oct 26, 2026Let's Encrypt issued 46 certificates for iupac.org from Mar 29, 2026, the latest valid until Jan 14, 2027.Source: Certificate Transparency logs (AboutUs's own certificate-log reader)Sectigo LimitedSep 17, 2026 – Oct 26, 2026
200020102020Jan ’26Oct ’26← last 12 months, drawn wider
Every dated fact on this lifeline (16)
Jul 10, 1997Registration: iupac.org was registered on Jul 10, 1997.Source: RDAP, fetched Aug 21, 2026
Jul 1, 2013AboutUs record: “The International Union of Pure and Applied Chemistry (IUPAC) serves to advance the worldwide aspects of the chemical sciences and to contribute to the app...”Source: AboutUs wiki archive, 2013
Nov 12, 2013AboutUs record: An AboutUs wiki page described iupac.org from Nov 12, 2013 to Nov 12, 2013 (1 edit).Source: AboutUs wiki archive, 2006–2023
Mar 13, 2014 – Mar 20, 2014Registrar: Registrar Network Solutions, LLC (R63-LROR) in the WHOIS and RDAP records held for iupac.org, from Mar 13, 2014 to Mar 20, 2014.Source: WHOIS / RDAP archive (who.is)
Mar 13, 2014 – Mar 2, 2026Ownership: Registration records for iupac.org are held from Mar 13, 2014 to Mar 2, 2026 (67 records). 1 change of registrant name or organization is marked. Privacy-service and redaction changes are not counted.Source: WHOIS / RDAP archive (who.is); counted by registrant name and organization only
Mar 13, 2014 – Dec 1, 2016Registration records listed tqhosting.com nameservers (ns1.tqhosting.com, ns2.tqhosting.com, ns3.tqhosting.com) for iupac.org from Mar 13, 2014 to Dec 1, 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.
latest result
“The International Union of Pure and Applied Chemistry (IUPAC) serves to advance the worldwide aspects of the chemical sciences and to contribute to the app...”
Source: AboutUs wiki archive, 2013
Current AboutUs recordJul 3, 2026 – Aug 21, 2026 (latest)Authority and Safety last refreshed Aug 21, 2026.Source: AboutUs checks
Registrar Network Solutions, LLC (IANA 2) in the WHOIS and RDAP records held for iupac.org, from Aug 30, 2016 to Dec 1, 2016.
Source: WHOIS / RDAP archive (who.is)
PDR Ltd. d/b/a PublicDomainRegistry.comPDR Ltd. d/b/a PublicDomainRegistry.comApr 9, 2018 – Oct 26, 2026 (latest)Registrar PDR Ltd. d/b/a PublicDomainRegistry.com (IANA 303) in the registration data recorded, first on Apr 9, 2018 and most recently on Oct 26, 2026.Source: RDAP, fetched Aug 21, 2026
Ownership change
Apr 9, 2018
The registrant name or organization in the registration record changed; first recorded Apr 9, 2018. Who it changed to is in the full report.
Source: WHOIS / RDAP archive (who.is); counted by registrant name and organization only
1 ownership change, 2014–2026
Nameservers: netfriends.comApr 9, 2018 – Dec 19, 2021Registration records listed netfriends.com nameservers (ns1.netfriends.com, ns2.netfriends.com, ns3.netfriends.com…) for iupac.org from Apr 9, 2018 to Dec 19, 2021.Source: From registration records (WHOIS / RDAP archive, who.is)
DNS moved to netfriends.comApr 9, 2018iupac.org's nameservers moved from tqhosting.com to netfriends.com at some point between Dec 1, 2016 and Apr 9, 2018. Last seen at tqhosting.com: Dec 1, 2016 (registration record). First seen at netfriends.com: Apr 9, 2018 (registration record). AboutUs holds no nameserver records for the 16 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: CloudflareMar 25, 2022 – Mar 2, 2026Registration records listed Cloudflare nameservers (clara.ns.cloudflare.com, gabe.ns.cloudflare.com) for iupac.org from Mar 25, 2022 to Mar 2, 2026.Source: From registration records (WHOIS / RDAP archive, who.is)
DNS moved to CloudflareMar 25, 2022iupac.org's nameservers moved from netfriends.com to Cloudflare at some point between Dec 19, 2021 and Mar 25, 2022. Last seen at netfriends.com: Dec 19, 2021 (registration record). First seen at Cloudflare: Mar 25, 2022 (registration record). AboutUs holds no nameserver records for the 3 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)
Sectigo Limited issued 1 certificate for iupac.org from Sep 17, 2026, the latest valid until Dec 13, 2026.
Source: Certificate Transparency logs (AboutUs's own certificate-log reader)
Zone file:
Source: From registration records (WHOIS / RDAP archive, who.is)
Aug 30, 2016 – Dec 1, 2016Registrar: Registrar Network Solutions, LLC (IANA 2) in the WHOIS and RDAP records held for iupac.org, from Aug 30, 2016 to Dec 1, 2016.Source: WHOIS / RDAP archive (who.is)
Apr 9, 2018 – Oct 26, 2026Registrar: Registrar PDR Ltd. d/b/a PublicDomainRegistry.com (IANA 303) in the registration data recorded, first on Apr 9, 2018 and most recently on Oct 26, 2026.Source: RDAP, fetched Aug 21, 2026
Apr 9, 2018Ownership: The registrant name or organization in the registration record changed; first recorded Apr 9, 2018. Who it changed to is in the full report.Source: WHOIS / RDAP archive (who.is); counted by registrant name and organization only
Apr 9, 2018 – Dec 19, 2021Zone file: Registration records listed netfriends.com nameservers (ns1.netfriends.com, ns2.netfriends.com, ns3.netfriends.com…) for iupac.org from Apr 9, 2018 to Dec 19, 2021.Source: From registration records (WHOIS / RDAP archive, who.is)
Apr 9, 2018Zone file: iupac.org's nameservers moved from tqhosting.com to netfriends.com at some point between Dec 1, 2016 and Apr 9, 2018. Last seen at tqhosting.com: Dec 1, 2016 (registration record). First seen at netfriends.com: Apr 9, 2018 (registration record). AboutUs holds no nameserver records for the 16 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)
Mar 25, 2022 – Mar 2, 2026Zone file: Registration records listed Cloudflare nameservers (clara.ns.cloudflare.com, gabe.ns.cloudflare.com) for iupac.org from Mar 25, 2022 to Mar 2, 2026.Source: From registration records (WHOIS / RDAP archive, who.is)
Mar 25, 2022Zone file: iupac.org's nameservers moved from netfriends.com to Cloudflare at some point between Dec 19, 2021 and Mar 25, 2022. Last seen at netfriends.com: Dec 19, 2021 (registration record). First seen at Cloudflare: Mar 25, 2022 (registration record). AboutUs holds no nameserver records for the 3 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)
Mar 29, 2026 – Oct 26, 2026Certificate: Let's Encrypt issued 46 certificates for iupac.org from Mar 29, 2026, the latest valid until Jan 14, 2027.Source: Certificate Transparency logs (AboutUs's own certificate-log reader)
Jul 3, 2026 – Aug 21, 2026AboutUs record: Authority and Safety last refreshed Aug 21, 2026.Source: AboutUs checks
Sep 17, 2026 – Oct 26, 2026Certificate: Sectigo Limited issued 1 certificate for iupac.org from Sep 17, 2026, the latest valid until Dec 13, 2026.Source: Certificate Transparency logs (AboutUs's own certificate-log reader)
Domain registered Jul 10, 1997 — 29 years old.
latest result
Registrar on record: PDR Ltd. d/b/a PublicDomainRegistry.com — unchanged since AboutUs began tracking (Jul 31, 2026).
latest result
HTTPS request succeeded for iupac.org.
checked Sep 30, 2026
The site names IUPAC as the organisation behind it.
checked Sep 30, 2026
The live front page reads as a non-profit, association or religious site that is funded by donations or members, mainly for specialists in its field.
Authority 75/100— ahead of 75% of the August 2026 scored sampleClear
Why this authority score
75 is a percentile: higher than 75% of sites we score.
How it's calculated
Prominence (Tranco rank #39,949)+8
Verified continuity: 29.3 years (RDAP registration)+11
Identity corroboration (capped)+4
Security & email hygiene+3
Calibration adjustment (published map)+12
Model score: 38/99 — what these reason lines add up to.
Published Authority (percentile): 75/100 — this site's rank against the August 2026 scored sample. Public Authority is capped at 99.
Safety evidence
No unexpired threat-feed result; name-similarity check available (recorded about 66 days ago); 3/3 transport and email checks available (oldest recorded about 66 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
What iupac.org said about itself, 2013
Quoted from the site's AboutUs wiki page in each year it changed (1 version). These are the page's own words at the time, not AboutUs's assessment. New words · dropped words
2013
The International Union of Pure and Applied Chemistry (IUPAC) serves to advance the worldwide aspects of the chemical sciences and to contribute to the app...
Site history
Dated record — historical facts always carry their date.