Verifying against the live site and live WHOIS/DNS…
Common questions
Is carbonfootprint.com 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 carbonfootprint.com?
Nobody has completed AboutUs's owner verification for carbonfootprint.com. 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.
Lifeline · carbonfootprint.com over time
Checked in the last 30 daysOlder, dated recordFrom registration records
Registered 21 years ago · on AboutUs since 2013 · 2 registrar changes since Jun 3, 2017 · no ownership change on record since 2007 · last checked Oct 3, 2026.
Registration
RegisteredJan 12, 2005carbonfootprint.com was registered on Jan 12, 2005.Source: RDAP, fetched Aug 21, 2026
AboutUs record
AboutUs wiki pageNov 12, 2013An AboutUs wiki page described carbonfootprint.com from Nov 12, 2013 to Nov 12, 2013 (1 edit).Source: AboutUs wiki archive, 2006–2023Said about itself in 2013Jul 1, 2013
Registrar
LCN.com LtdJun 3, 2017 – Apr 19, 2020Registrar LCN.com Ltd (IANA 602) in the WHOIS and RDAP records held for carbonfootprint.com, from Jun 3, 2017 to Apr 19, 2020.Source: WHOIS / RDAP archive (who.is)REGISTER S.P.A.REGISTER S.P.A.
Ownership
Ownership recordsMay 17, 2007 – Jun 3, 2026Registration records for carbonfootprint.com are held from May 17, 2007 to Jun 3, 2026 (145 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, 2007–2026
Zone file
Nameservers: 1and1.co.ukMay 17, 2007 – Aug 24, 2010Registration records listed 1and1.co.uk nameservers (ns59.1and1.co.uk, ns60.1and1.co.uk) for carbonfootprint.com from May 17, 2007 to Aug 24, 2010.Source: From registration records (WHOIS / RDAP archive, who.is)
Certificate
Let's EncryptApr 1, 2026 – Oct 26, 2026 (latest)Let's Encrypt issued 32 certificates for carbonfootprint.com from Apr 1, 2026, the latest valid until Jan 23, 2027. Seen in use on Oct 3, 2026.Source: Certificate Transparency logs (AboutUs's own certificate-log reader); TLS check, Oct 3, 2026
2010201520202025Apr ’26← last 12 months, drawn wider
Every dated fact on this lifeline (17)
Jan 12, 2005Registration: carbonfootprint.com was registered on Jan 12, 2005.Source: RDAP, fetched Aug 21, 2026
May 17, 2007 – Jun 3, 2026Ownership: Registration records for carbonfootprint.com are held from May 17, 2007 to Jun 3, 2026 (145 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
May 17, 2007 – Aug 24, 2010Zone file: Registration records listed 1and1.co.uk nameservers (ns59.1and1.co.uk, ns60.1and1.co.uk) for carbonfootprint.com from May 17, 2007 to Aug 24, 2010.Source: From registration records (WHOIS / RDAP archive, who.is)
Feb 18, 2011 – Oct 17, 2013Zone file: Registration records listed lcn.com nameservers (ns0.lcn.com, ns1.lcn.com) for carbonfootprint.com from Feb 18, 2011 to Oct 17, 2013. Days a zone file covers are shown from the zone file instead.Source: From registration records (WHOIS / RDAP archive, who.is)
Feb 18, 2011Zone file: carbonfootprint.com's nameservers moved from 1and1.co.uk to lcn.com at some point between Aug 24, 2010 and Feb 18, 2011. Last seen at 1and1.co.uk: Aug 24, 2010 (registration record). First seen at lcn.com: Feb 18, 2011 (registration record). AboutUs holds no nameserver records for the 6 months in between, so the date of the move is not known more closely.
“FREE Carbon Footprint Calculator to Calculate Carbon Footprints & Carbon Emissions and Reducing Carbon Footprint and GHG Emissions. Reduce Carbon Footprint...”
Source: AboutUs wiki archive, 2013
Current AboutUs recordJul 2, 2026 – Aug 21, 2026 (latest)Authority and Safety last refreshed Aug 21, 2026.Source: AboutUs checks
Oct 4, 2020 – Jun 3, 2026
Registrar REGISTER S.P.A. (IANA 168) in the WHOIS and RDAP records held for carbonfootprint.com, from Oct 4, 2020 to Jun 3, 2026.
Source: WHOIS / RDAP archive (who.is)
Register SPAAug 21, 2026 – Sep 29, 2026 (latest)Registrar Register SPA in the registration data recorded, first on Aug 21, 2026 and most recently on Sep 29, 2026.Source: RDAP, fetched Aug 21, 2026
Nameservers: lcn.com
Feb 18, 2011 – Oct 17, 2013
Registration records listed lcn.com nameservers (ns0.lcn.com, ns1.lcn.com) for carbonfootprint.com from Feb 18, 2011 to Oct 17, 2013. Days a zone file covers are shown from the zone file instead.
Source: From registration records (WHOIS / RDAP archive, who.is)
DNS moved to lcn.comFeb 18, 2011carbonfootprint.com's nameservers moved from 1and1.co.uk to lcn.com at some point between Aug 24, 2010 and Feb 18, 2011. Last seen at 1and1.co.uk: Aug 24, 2010 (registration record). First seen at lcn.com: Feb 18, 2011 (registration record). AboutUs holds no nameserver records for the 6 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: lcn.comNameservers: lcn.comOct 18, 2013 – Apr 3, 2018lcn.com (ns0.lcn.com, ns1.lcn.com) were the nameservers listed for carbonfootprint.com at every ICANN zone-file snapshot AboutUs holds from Oct 18, 2013 to Apr 3, 2018 (snapshots exist for only part of 2013–2018).Source: ICANN zone-file snapshots, 2013–2018 (legacy archive)
Nameservers: lcn.comNameservers: lcn.comApr 4, 2018 – Jun 3, 2026Registration records listed lcn.com nameservers (ns0.lcn.com, ns1.lcn.com) for carbonfootprint.com from Apr 4, 2018 to Jun 3, 2026. Days a zone file covers are shown from the zone file instead.Source: From registration records (WHOIS / RDAP archive, who.is)
Seen in the .com zone fileSep 8, 2026 – Sep 24, 2026 (latest)First seen in the .com zone file records AboutUs holds on Sep 8, 2026; latest sighting Sep 24, 2026. Nameservers on Sep 24, 2026: ns0.lcn.com, ns1.lcn.com, ns2.lcn.com.Source: ICANN CZDS zone file, snapshot Sep 24, 2026
Google Trust Services
Jun 9, 2026 – Oct 26, 2026
Google Trust Services issued 9 certificates for carbonfootprint.com from Jun 9, 2026, the latest valid until Jan 23, 2027.
Source: Certificate Transparency logs (AboutUs's own certificate-log reader)
ZeroSSL GmbHSep 29, 2026 – Oct 26, 2026ZeroSSL GmbH issued 1 certificate for carbonfootprint.com from Sep 29, 2026, the latest valid until Dec 28, 2026.Source: Certificate Transparency logs (AboutUs's own certificate-log reader)
Source: Derived from the nameserver records on this lifeline (registration record → registration record)
Jul 1, 2013AboutUs record: “FREE Carbon Footprint Calculator to Calculate Carbon Footprints & Carbon Emissions and Reducing Carbon Footprint and GHG Emissions. Reduce Carbon Footprint...”Source: AboutUs wiki archive, 2013
Oct 18, 2013 – Apr 3, 2018Zone file: lcn.com (ns0.lcn.com, ns1.lcn.com) were the nameservers listed for carbonfootprint.com at every ICANN zone-file snapshot AboutUs holds from Oct 18, 2013 to Apr 3, 2018 (snapshots exist for only part of 2013–2018).Source: ICANN zone-file snapshots, 2013–2018 (legacy archive)
Nov 12, 2013AboutUs record: An AboutUs wiki page described carbonfootprint.com from Nov 12, 2013 to Nov 12, 2013 (1 edit).Source: AboutUs wiki archive, 2006–2023
Jun 3, 2017 – Apr 19, 2020Registrar: Registrar LCN.com Ltd (IANA 602) in the WHOIS and RDAP records held for carbonfootprint.com, from Jun 3, 2017 to Apr 19, 2020.Source: WHOIS / RDAP archive (who.is)
Apr 4, 2018 – Jun 3, 2026Zone file: Registration records listed lcn.com nameservers (ns0.lcn.com, ns1.lcn.com) for carbonfootprint.com from Apr 4, 2018 to Jun 3, 2026. Days a zone file covers are shown from the zone file instead.Source: From registration records (WHOIS / RDAP archive, who.is)
Oct 4, 2020 – Jun 3, 2026Registrar: Registrar REGISTER S.P.A. (IANA 168) in the WHOIS and RDAP records held for carbonfootprint.com, from Oct 4, 2020 to Jun 3, 2026.Source: WHOIS / RDAP archive (who.is)
Apr 1, 2026 – Oct 26, 2026Certificate: Let's Encrypt issued 32 certificates for carbonfootprint.com from Apr 1, 2026, the latest valid until Jan 23, 2027. Seen in use on Oct 3, 2026.Source: Certificate Transparency logs (AboutUs's own certificate-log reader); TLS check, Oct 3, 2026
Jun 9, 2026 – Oct 26, 2026Certificate: Google Trust Services issued 9 certificates for carbonfootprint.com from Jun 9, 2026, the latest valid until Jan 23, 2027.Source: Certificate Transparency logs (AboutUs's own certificate-log reader)
Jul 2, 2026 – Aug 21, 2026AboutUs record: Authority and Safety last refreshed Aug 21, 2026.Source: AboutUs checks
Aug 21, 2026 – Sep 29, 2026Registrar: Registrar Register SPA in the registration data recorded, first on Aug 21, 2026 and most recently on Sep 29, 2026.Source: RDAP, fetched Aug 21, 2026
Sep 8, 2026 – Sep 24, 2026Zone file: First seen in the .com zone file records AboutUs holds on Sep 8, 2026; latest sighting Sep 24, 2026. Nameservers on Sep 24, 2026: ns0.lcn.com, ns1.lcn.com, ns2.lcn.com.Source: ICANN CZDS zone file, snapshot Sep 24, 2026
Sep 29, 2026 – Oct 26, 2026Certificate: ZeroSSL GmbH issued 1 certificate for carbonfootprint.com from Sep 29, 2026, the latest valid until Dec 28, 2026.Source: Certificate Transparency logs (AboutUs's own certificate-log reader)
3 of 4 safety checks passed (Oct 26, 2026).
Registered 2005 · site is live · HTTPS valid
CarbonFootprint.com FREE Carbon Footprint Calculator to Calculate Carbon Footprints
CarbonFootprint.com, operated by Carbon Footprint Ltd, provides a free online carbon footprint calculator that helps individuals and organizations measure their greenhouse gas emissions. The site also covers carbon reduction strategies and carbon offsetting options. It is associated with IMTEK Environmental Corporation, based in Alpharetta, Georgia, USA.
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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
Carbon Footprint Ltd — company name on record since 2013; still matches the live site.
latest result
Domain registered Jan 12, 2005 — 21 years old.
latest result
Registrar on record: Register SPA — unchanged since AboutUs began tracking (Aug 21, 2026).
latest result
HTTPS request succeeded for www.carbonfootprint.com.
checked Sep 30, 2026
The site names Carbon Footprint Ltd as the organisation behind it.
checked Sep 30, 2026
The live front page reads as a business-services site that sells its own services, mainly for businesses and professionals.
Authority 67/100— ahead of 67% of the August 2026 scored sampleClear
Why this authority score
67 is a percentile: higher than 67% of sites we score.
How it's calculated
Prominence (Tranco rank #97,955)+7
Verified continuity: 21.8 years (RDAP registration)+10
Identity corroboration (capped)+4
Security & email hygiene+3
Calibration adjustment (published map)+10
Model score: 34/99 — what these reason lines add up to.
Published Authority (percentile): 67/100 — this site's rank against the August 2026 scored sample. Public Authority is capped at 99.
What carbonfootprint.com 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
FREE Carbon Footprint Calculator to Calculate Carbon Footprints & Carbon Emissions and Reducing Carbon Footprint and GHG Emissions. Reduce Carbon Footprint...
Site history
Dated record — historical facts always carry their date.
✓ name continuity same company name for 13 years✓ domain continuity 21 years registered✓ live verified Oct 26, 2026
Safety evidence
No unexpired threat-feed result; name-similarity check available (recorded about 65 days ago); 3/3 transport and email checks available (oldest recorded about 65 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