Verifying against the live site and live WHOIS/DNS…
Common questions
Is opi.org.pl 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 opi.org.pl?
Nobody has completed AboutUs's owner verification for opi.org.pl. 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 · opi.org.pl over time
Checked in the last 30 daysOlder, dated recordFrom registration records
On AboutUs since 2006 · 1 registrar change since Jul 1, 2009 · no registrant change on record since 2009 · last checked Sep 19, 2026.
Registration
No registration date on file yet. AboutUs reads it from RDAP when the site is checked.
AboutUs record
AboutUs wiki pageAboutUs wiki pageJun 21, 2006 – Nov 13, 2013An AboutUs wiki page described opi.org.pl from Jun 21, 2006 to Nov 13, 2013 (2 edits).Source: AboutUs wiki archive, 2006–2023Said about itself in 2006Jul 1, 2006“Jednostka badawczo-rozwojowa zapewniająca dostęp do informacji o nauce polskiej poprzez publikację baz danych o instytucjach, projektach, publikacjach i konferencjach naukowych.”Source: AboutUs wiki archive, 2006
Registrar
NASKJul 1, 2009 – Aug 13, 2009Registrar NASK in the WHOIS and RDAP records held for opi.org.pl, from Jul 1, 2009 to Aug 13, 2009.Source: WHOIS / RDAP archive (who.is)OVH SASSep 4, 2026 – Sep 27, 2026 (latest)
Registrant
Registrant recordsJul 1, 2009 – Jun 15, 2026Registration records for opi.org.pl are held from Jul 1, 2009 to Jun 15, 2026 (87 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
No nameserver records held, Sep 2010 – Jun 2011Nameservers: org.plJul 1, 2009 – Sep 10, 2010Registration records listed org.pl nameservers (e150.opi.org.pl) for opi.org.pl from Jul 1, 2009 to Sep 10, 2010.Source: From registration records (WHOIS / RDAP archive, who.is)
Certificate
Unizeto Technologies S.A.Unizeto Technologies S.A.Aug 29, 2025 – Aug 29, 2026Unizeto Technologies S.A. issued 1 certificate for opi.org.pl from Aug 29, 2025, the latest valid until Aug 29, 2026.Source: Certificate Transparency logs (AboutUs's own certificate-log reader)Asseco Data Systems S.A.
2010201520202025Apr ’26← last 12 months, drawn wider
Every dated fact on this lifeline (17)
Jun 21, 2006 – Nov 13, 2013AboutUs record: An AboutUs wiki page described opi.org.pl from Jun 21, 2006 to Nov 13, 2013 (2 edits).Source: AboutUs wiki archive, 2006–2023
Jul 1, 2006AboutUs record: “Jednostka badawczo-rozwojowa zapewniająca dostęp do informacji o nauce polskiej poprzez publikację baz danych o instytucjach, projektach, publikacjach i konferencjach naukowych.”Source: AboutUs wiki archive, 2006
Jul 1, 2009 – Aug 13, 2009Registrar: Registrar NASK in the WHOIS and RDAP records held for opi.org.pl, from Jul 1, 2009 to Aug 13, 2009.Source: WHOIS / RDAP archive (who.is)
Jul 1, 2009 – Jun 15, 2026Registrant: Registration records for opi.org.pl are held from Jul 1, 2009 to Jun 15, 2026 (87 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
Jul 1, 2009 – Sep 10, 2010Zone file: Registration records listed org.pl nameservers (e150.opi.org.pl) for opi.org.pl from Jul 1, 2009 to Sep 10, 2010.Source: From registration records (WHOIS / RDAP archive, who.is)
Current AboutUs record
Jul 4, 2026 – Aug 23, 2026 (latest)
Authority and Safety last refreshed Aug 23, 2026.
Source: AboutUs checks
Registrar OVH SAS in the registration data recorded, first on Sep 4, 2026 and most recently on Sep 27, 2026.
Source: RDAP, fetched Jul 4, 2026
Nameservers: waw.pl
Jun 13, 2011 – Mar 31, 2014
Registration records listed waw.pl nameservers (eomer.nask.waw.pl) for opi.org.pl from Jun 13, 2011 to Mar 31, 2014.
Source: From registration records (WHOIS / RDAP archive, who.is)
DNS moved to waw.plJun 13, 2011opi.org.pl's nameservers moved from org.pl to waw.pl at some point between Sep 10, 2010 and Jun 13, 2011. Last seen at org.pl: Sep 10, 2010 (registration record). First seen at waw.pl: Jun 13, 2011 (registration record). AboutUs holds no nameserver records for the 9 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: org.plNameservers: org.plNov 6, 2014 – Jun 15, 2026Registration records listed org.pl nameservers (e150.opi.org.pl) for opi.org.pl from Nov 6, 2014 to Jun 15, 2026.Source: From registration records (WHOIS / RDAP archive, who.is)
DNS moved to org.plNov 6, 2014opi.org.pl's nameservers moved from waw.pl to org.pl at some point between Mar 31, 2014 and Nov 6, 2014. Last seen at waw.pl: Mar 31, 2014 (registration record). First seen at org.pl: Nov 6, 2014 (registration record). AboutUs holds no nameserver records for the 7 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)
Asseco Data Systems S.A.Sep 24, 2025 – Nov 7, 2026 (latest)Asseco Data Systems S.A. issued 8 certificates for opi.org.pl from Sep 24, 2025, the latest valid until Mar 28, 2027. Seen in use on Sep 19, 2026.Source: Certificate Transparency logs (AboutUs's own certificate-log reader); TLS check, Sep 19, 2026
Sectigo LimitedSectigo LimitedOct 10, 2025 – Nov 7, 2026Sectigo Limited issued 9 certificates for opi.org.pl from Oct 10, 2025, the latest valid until May 22, 2027.Source: Certificate Transparency logs (AboutUs's own certificate-log reader)
cyber_Folks S.A.cyber_Folks S.A.Dec 2, 2025 – Nov 7, 2026cyber_Folks S.A. issued 1 certificate for opi.org.pl from Dec 2, 2025, the latest valid until Dec 2, 2026.Source: Certificate Transparency logs (AboutUs's own certificate-log reader)
Let's EncryptApr 9, 2026 – Nov 7, 2026Let's Encrypt issued 21 certificates for opi.org.pl from Apr 9, 2026, the latest valid until Jan 20, 2027.Source: Certificate Transparency logs (AboutUs's own certificate-log reader)
GoGetSSLMay 8, 2026 – Nov 7, 2026GoGetSSL issued 2 certificates for opi.org.pl from May 8, 2026, the latest valid until Apr 16, 2027.Source: Certificate Transparency logs (AboutUs's own certificate-log reader)
Jun 13, 2011 – Mar 31, 2014
Zone file: Registration records listed waw.pl nameservers (eomer.nask.waw.pl) for opi.org.pl from Jun 13, 2011 to Mar 31, 2014.Source: From registration records (WHOIS / RDAP archive, who.is)
Jun 13, 2011Zone file: opi.org.pl's nameservers moved from org.pl to waw.pl at some point between Sep 10, 2010 and Jun 13, 2011. Last seen at org.pl: Sep 10, 2010 (registration record). First seen at waw.pl: Jun 13, 2011 (registration record). AboutUs holds no nameserver records for the 9 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 6, 2014 – Jun 15, 2026Zone file: Registration records listed org.pl nameservers (e150.opi.org.pl) for opi.org.pl from Nov 6, 2014 to Jun 15, 2026.Source: From registration records (WHOIS / RDAP archive, who.is)
Nov 6, 2014Zone file: opi.org.pl's nameservers moved from waw.pl to org.pl at some point between Mar 31, 2014 and Nov 6, 2014. Last seen at waw.pl: Mar 31, 2014 (registration record). First seen at org.pl: Nov 6, 2014 (registration record). AboutUs holds no nameserver records for the 7 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)
Aug 29, 2025 – Aug 29, 2026Certificate: Unizeto Technologies S.A. issued 1 certificate for opi.org.pl from Aug 29, 2025, the latest valid until Aug 29, 2026.Source: Certificate Transparency logs (AboutUs's own certificate-log reader)
Sep 24, 2025 – Nov 7, 2026Certificate: Asseco Data Systems S.A. issued 8 certificates for opi.org.pl from Sep 24, 2025, the latest valid until Mar 28, 2027. Seen in use on Sep 19, 2026.Source: Certificate Transparency logs (AboutUs's own certificate-log reader); TLS check, Sep 19, 2026
Oct 10, 2025 – Nov 7, 2026Certificate: Sectigo Limited issued 9 certificates for opi.org.pl from Oct 10, 2025, the latest valid until May 22, 2027.Source: Certificate Transparency logs (AboutUs's own certificate-log reader)
Dec 2, 2025 – Nov 7, 2026Certificate: cyber_Folks S.A. issued 1 certificate for opi.org.pl from Dec 2, 2025, the latest valid until Dec 2, 2026.Source: Certificate Transparency logs (AboutUs's own certificate-log reader)
Apr 9, 2026 – Nov 7, 2026Certificate: Let's Encrypt issued 21 certificates for opi.org.pl from Apr 9, 2026, the latest valid until Jan 20, 2027.Source: Certificate Transparency logs (AboutUs's own certificate-log reader)
May 8, 2026 – Nov 7, 2026Certificate: GoGetSSL issued 2 certificates for opi.org.pl from May 8, 2026, the latest valid until Apr 16, 2027.Source: Certificate Transparency logs (AboutUs's own certificate-log reader)
Jul 4, 2026 – Aug 23, 2026AboutUs record: Authority and Safety last refreshed Aug 23, 2026.Source: AboutUs checks
Sep 4, 2026 – Sep 27, 2026Registrar: Registrar OVH SAS in the registration data recorded, first on Sep 4, 2026 and most recently on Sep 27, 2026.Source: RDAP, fetched Jul 4, 2026
1 of 2 safety checks passed (Nov 7, 2026).
Registered 1998 · AboutUs could not get a response over HTTPS when it checked (Nov 7, 2026)
Opi.org.pl
Jednostka badawczo-rozwojowa zapewniająca dostęp do informacji o nauce polskiej poprzez publikację baz danych o instytucjach, projektach, publikacjach i konferencjach naukowych.
Make sure the site responds over HTTPS with a valid certificate.
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 Jan 6, 1998 — 28 years old.
latest result
Registrar on record: OVH SAS — unchanged since AboutUs began tracking (Sep 4, 2026).
checked Oct 3, 2026
The site names Ośrodek Przetwarzania Informacji as the organisation behind it.
Authority 57/100— ahead of 57% of the August 2026 scored sampleClear
Why this authority score
57 is a percentile: higher than 57% of sites we score.
How it's calculated
Prominence (Tranco rank #271,970)+5
Verified continuity: 28.9 years (RDAP registration)+11
Identity corroboration (capped)+4
Security & email hygiene+2
Calibration adjustment (published map)+8
Model score: 30/99 — what these reason lines add up to.
Published Authority (percentile): 57/100 — this site's rank against the August 2026 scored sample. Public Authority is capped at 99.
What opi.org.pl said about itself, 2006
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
2006
Jednostka badawczo-rozwojowa zapewniająca dostęp do informacji o nauce polskiej poprzez publikację baz danych o instytucjach, projektach, publikacjach i konferencjach naukowych.
Site history
Dated record — historical facts always carry their date.
✓ domain continuity 28 years registered– no HTTPS response the site did not answer over HTTPS when checked Nov 7, 2026
Safety evidence
No unexpired threat-feed result; name-similarity check available (recorded about 75 days ago); 3/3 transport and email checks available (oldest recorded about 75 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