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Lifeline · theconstructor.org over time
Checked in the last 30 daysOlder, dated recordFrom registration records
Registered 17 years ago · on AboutUs since 2014 · 2 registrar changes since Jan 31, 2014 · no registrant change on record since 2014 · last checked Sep 26, 2026.
Registration
RegisteredMar 19, 2009theconstructor.org was registered on Mar 19, 2009.Source: RDAP, fetched Sep 26, 2026
AboutUs record
AboutUs wiki pageFeb 20, 2014An AboutUs wiki page described theconstructor.org from Feb 20, 2014 to Feb 20, 2014 (1 edit).Source: AboutUs wiki archive, 2006–2023Said about itself in 2014Jul 1, 2014
Registrar
PDR Ltd. d/b/a PublicDomainRegistry.com (R27-LROR)Jan 31, 2014 – Apr 8, 2014Registrar PDR Ltd. d/b/a PublicDomainRegistry.com (R27-LROR) in the WHOIS and RDAP records held for theconstructor.org, from Jan 31, 2014 to Apr 8, 2014.Source: WHOIS / RDAP archive (who.is)PDR Ltd. d/b/a PublicDomainRegistry.com
Registrant
Registrant recordsJan 31, 2014 – Jun 28, 2026Registration records for theconstructor.org are held from Jan 31, 2014 to Jun 28, 2026 (94 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, 2014–2026
Zone file
No nameserver records held, Apr 2014 – Jul 2016Nameservers: theconstructor.orgJan 31, 2014 – Apr 8, 2014Registration records listed theconstructor.org nameservers (ns1.theconstructor.org, ns2.theconstructor.org) for theconstructor.org from Jan 31, 2014 to Apr 8, 2014.Source: From registration records (WHOIS / RDAP archive, who.is)
Certificate
Google Trust ServicesApr 14, 2026 – Nov 10, 2026Google Trust Services issued 14 certificates for theconstructor.org from Apr 14, 2026, the latest valid until Jan 7, 2027.Source: Certificate Transparency logs (AboutUs's own certificate-log reader)Let's Encrypt
2010201520202025Apr ’26← last 12 months, drawn wider
Every dated fact on this lifeline (17)
Mar 19, 2009Registration: theconstructor.org was registered on Mar 19, 2009.Source: RDAP, fetched Sep 26, 2026
Jan 31, 2014 – Apr 8, 2014Registrar: Registrar PDR Ltd. d/b/a PublicDomainRegistry.com (R27-LROR) in the WHOIS and RDAP records held for theconstructor.org, from Jan 31, 2014 to Apr 8, 2014.Source: WHOIS / RDAP archive (who.is)
Jan 31, 2014 – Jun 28, 2026Registrant: Registration records for theconstructor.org are held from Jan 31, 2014 to Jun 28, 2026 (94 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
Jan 31, 2014 – Apr 8, 2014Zone file: Registration records listed theconstructor.org nameservers (ns1.theconstructor.org, ns2.theconstructor.org) for theconstructor.org from Jan 31, 2014 to Apr 8, 2014.Source: From registration records (WHOIS / RDAP archive, who.is)
Feb 20, 2014AboutUs record: An AboutUs wiki page described theconstructor.org from Feb 20, 2014 to Feb 20, 2014 (1 edit).Source: AboutUs wiki archive, 2006–2023
“The Constructor is a valuable civil engineering information resource for students and construction professionals. Civil Engineering Career and Construction Project Management are also covered.”
Source: AboutUs wiki archive, 2014
Current AboutUs recordJul 18, 2026 – Sep 26, 2026 (latest)Authority and Safety last refreshed Sep 26, 2026.Source: AboutUs checks
PDR Ltd. d/b/a PublicDomainRegistry.com
Jul 6, 2016 – Feb 21, 2021
Registrar PDR Ltd. d/b/a PublicDomainRegistry.com (IANA 303) in the WHOIS and RDAP records held for theconstructor.org, from Jul 6, 2016 to Feb 21, 2021.
Source: WHOIS / RDAP archive (who.is)
GoDaddy.com, LLCGoDaddy.com, LLCApr 3, 2021 – Jun 28, 2026 (latest)Registrar GoDaddy.com, LLC (IANA 146) in the WHOIS and RDAP records held for theconstructor.org, from Apr 3, 2021 to Jun 28, 2026.Source: WHOIS / RDAP archive (who.is)
Nameservers: Cloudflare
Nameservers: CloudflareJul 6, 2016 – Jun 1, 2020Registration records listed Cloudflare nameservers (april.ns.cloudflare.com, jeff.ns.cloudflare.com) for theconstructor.org from Jul 6, 2016 to Jun 1, 2020.Source: From registration records (WHOIS / RDAP archive, who.is)
DNS moved to CloudflareJul 6, 2016theconstructor.org's nameservers moved from theconstructor.org to Cloudflare at some point between Apr 8, 2014 and Jul 6, 2016. Last seen at theconstructor.org: Apr 8, 2014 (registration record). First seen at Cloudflare: Jul 6, 2016 (registration record). AboutUs holds no nameserver records for the about 2 years 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: wordpress.comAug 8, 2020 – Feb 21, 2021Registration records listed wordpress.com nameservers (ns1.wordpress.com, ns2.wordpress.com, ns3.wordpress.com) for theconstructor.org from Aug 8, 2020 to Feb 21, 2021.Source: From registration records (WHOIS / RDAP archive, who.is)
DNS moved to wordpress.comAug 8, 2020theconstructor.org's nameservers moved from Cloudflare to wordpress.com at some point between Jun 1, 2020 and Aug 8, 2020. Last seen at Cloudflare: Jun 1, 2020 (registration record). First seen at wordpress.com: Aug 8, 2020 (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: CloudflareNameservers: CloudflareApr 21, 2021 – Jun 28, 2026Registration records listed Cloudflare nameservers (courtney.ns.cloudflare.com, syeef.ns.cloudflare.com) for theconstructor.org from Apr 21, 2021 to Jun 28, 2026.Source: From registration records (WHOIS / RDAP archive, who.is)
DNS moved to CloudflareApr 21, 2021theconstructor.org's nameservers moved from wordpress.com to Cloudflare at some point between Feb 21, 2021 and Apr 21, 2021. Last seen at wordpress.com: Feb 21, 2021 (registration record). First seen at Cloudflare: Apr 21, 2021 (registration record). AboutUs holds no nameserver records for the 59 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)
Apr 19, 2026 – Nov 10, 2026
Let's Encrypt issued 4 certificates for theconstructor.org from Apr 19, 2026, the latest valid until Dec 21, 2026.
Source: Certificate Transparency logs (AboutUs's own certificate-log reader)
Jul 1, 2014
AboutUs record: “The Constructor is a valuable civil engineering information resource for students and construction professionals. Civil Engineering Career and Construction Project Management are also covered.”Source: AboutUs wiki archive, 2014
Jul 6, 2016 – Feb 21, 2021Registrar: Registrar PDR Ltd. d/b/a PublicDomainRegistry.com (IANA 303) in the WHOIS and RDAP records held for theconstructor.org, from Jul 6, 2016 to Feb 21, 2021.Source: WHOIS / RDAP archive (who.is)
Jul 6, 2016 – Jun 1, 2020Zone file: Registration records listed Cloudflare nameservers (april.ns.cloudflare.com, jeff.ns.cloudflare.com) for theconstructor.org from Jul 6, 2016 to Jun 1, 2020.Source: From registration records (WHOIS / RDAP archive, who.is)
Jul 6, 2016Zone file: theconstructor.org's nameservers moved from theconstructor.org to Cloudflare at some point between Apr 8, 2014 and Jul 6, 2016. Last seen at theconstructor.org: Apr 8, 2014 (registration record). First seen at Cloudflare: Jul 6, 2016 (registration record). AboutUs holds no nameserver records for the about 2 years 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)
Aug 8, 2020 – Feb 21, 2021Zone file: Registration records listed wordpress.com nameservers (ns1.wordpress.com, ns2.wordpress.com, ns3.wordpress.com) for theconstructor.org from Aug 8, 2020 to Feb 21, 2021.Source: From registration records (WHOIS / RDAP archive, who.is)
Aug 8, 2020Zone file: theconstructor.org's nameservers moved from Cloudflare to wordpress.com at some point between Jun 1, 2020 and Aug 8, 2020. Last seen at Cloudflare: Jun 1, 2020 (registration record). First seen at wordpress.com: Aug 8, 2020 (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)
Apr 3, 2021 – Jun 28, 2026Registrar: Registrar GoDaddy.com, LLC (IANA 146) in the WHOIS and RDAP records held for theconstructor.org, from Apr 3, 2021 to Jun 28, 2026.Source: WHOIS / RDAP archive (who.is)
Apr 21, 2021 – Jun 28, 2026Zone file: Registration records listed Cloudflare nameservers (courtney.ns.cloudflare.com, syeef.ns.cloudflare.com) for theconstructor.org from Apr 21, 2021 to Jun 28, 2026.Source: From registration records (WHOIS / RDAP archive, who.is)
Apr 21, 2021Zone file: theconstructor.org's nameservers moved from wordpress.com to Cloudflare at some point between Feb 21, 2021 and Apr 21, 2021. Last seen at wordpress.com: Feb 21, 2021 (registration record). First seen at Cloudflare: Apr 21, 2021 (registration record). AboutUs holds no nameserver records for the 59 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)
Apr 14, 2026 – Nov 10, 2026Certificate: Google Trust Services issued 14 certificates for theconstructor.org from Apr 14, 2026, the latest valid until Jan 7, 2027.Source: Certificate Transparency logs (AboutUs's own certificate-log reader)
Apr 19, 2026 – Nov 10, 2026Certificate: Let's Encrypt issued 4 certificates for theconstructor.org from Apr 19, 2026, the latest valid until Dec 21, 2026.Source: Certificate Transparency logs (AboutUs's own certificate-log reader)
Jul 18, 2026 – Sep 26, 2026AboutUs record: Authority and Safety last refreshed Sep 26, 2026.Source: AboutUs checks
3 of 4 safety checks passed (Nov 10, 2026).
Registered 2009 · site is live · HTTPS valid
theconstructor.org has an AboutUs profile for public website intelligence, ownership context, trust signals, monitoring, and owner verification.
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
Domain registered Mar 19, 2009 — 17 years old.
latest result
Registrar on record: GoDaddy.com, LLC — unchanged since AboutUs began tracking (Nov 10, 2026).
Authority 48/100— ahead of 48% of the August 2026 scored sampleClear
Why this authority score
48 is a percentile: higher than 48% of sites we score.
How it's calculated
Prominence (Tranco rank #105,171)+6
Verified continuity: 17.6 years (RDAP registration)+10
Security & email hygiene+3
Calibration adjustment (published map)+7
Model score: 26/99 — what these reason lines add up to.
Published Authority (percentile): 48/100 — 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 44 days ago); 3/3 transport and email checks available (oldest recorded about 44 days ago). This is evidence coverage, not a probability that a website is safe.
What theconstructor.org said about itself, 2014
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
2014
The Constructor is a valuable civil engineering information resource for students and construction professionals. Civil Engineering Career and Construction Project Management are also covered.
Site history
Dated record — historical facts always carry their date.