Verifying against the live site and live WHOIS/DNS…
Common questions
Is contemporaryobgyn.net 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 contemporaryobgyn.net?
Nobody has completed AboutUs's owner verification for contemporaryobgyn.net. 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 · contemporaryobgyn.net over time
Checked in the last 30 daysOlder, dated recordFrom registration records
Registered 27 years ago · on AboutUs since 2007 · 1 registrar change since Jun 30, 2016 · 2 registrant changes since 2016 · last checked Sep 29, 2026.
Registration
RegisteredApr 9, 1999contemporaryobgyn.net was registered on Apr 9, 1999.Source: RDAP, fetched Aug 22, 2026
AboutUs record
AboutUs wiki pageOct 14, 2007An AboutUs wiki page described contemporaryobgyn.net from Oct 14, 2007 to Oct 14, 2007 (1 edit).Source: AboutUs wiki archive, 2006–2023Said about itself in 2007Jul 1, 2007
Registrar
Network Solutions, LLCJun 30, 2016 – Jul 17, 2016Registrar Network Solutions, LLC (IANA 2) in the WHOIS and RDAP records held for contemporaryobgyn.net, from Jun 30, 2016 to Jul 17, 2016.Source: WHOIS / RDAP archive (who.is)CSC Corporate Domains, Inc.
Registrant
Registrant recordsJun 30, 2016 – Jan 27, 2026Registration records for contemporaryobgyn.net are held from Jun 30, 2016 to Jan 27, 2026 (32 records). 2 changes of registrant name or organization are marked. 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
Zone file
No nameserver records held, Sep 2016 – Apr 2018No nameserver records held, Jan 2026 – Nov 2026Nameservers: advanstar.comOct 18, 2013 – Apr 1, 2016advanstar.com (ns1.advanstar.com, ns2.advanstar.com, ns3.advanstar.com…) were the nameservers listed for contemporaryobgyn.net at every ICANN zone-file snapshot AboutUs holds from Oct 18, 2013 to Apr 1, 2016 (snapshots exist for only part of 2013–2018).Source: ICANN zone-file snapshots, 2013–2018 (legacy archive)
Certificate
DigiCert IncDigiCert IncOct 20, 2025 – Nov 9, 2026DigiCert Inc issued 2 certificates for contemporaryobgyn.net from Oct 20, 2025, the latest valid until May 24, 2027.Source: Certificate Transparency logs (AboutUs's own certificate-log reader)Amazon
200020102020Jan ’26Oct ’26← last 12 months, drawn wider
Every dated fact on this lifeline (24)
Apr 9, 1999Registration: contemporaryobgyn.net was registered on Apr 9, 1999.Source: RDAP, fetched Aug 22, 2026
Jul 1, 2007AboutUs record: “translates key advances in the specialty into excellence in day-to-day practice. It combines contemporary critical thinking from top academic physicians and evidence-based insights from eminent clinicians into expert ar…”Source: AboutUs wiki archive, 2007
Oct 14, 2007AboutUs record: An AboutUs wiki page described contemporaryobgyn.net from Oct 14, 2007 to Oct 14, 2007 (1 edit).Source: AboutUs wiki archive, 2006–2023
Oct 18, 2013 – Apr 1, 2016Zone file: advanstar.com (ns1.advanstar.com, ns2.advanstar.com, ns3.advanstar.com…) were the nameservers listed for contemporaryobgyn.net at every ICANN zone-file snapshot AboutUs holds from Oct 18, 2013 to Apr 1, 2016 (snapshots exist for only part of 2013–2018).Source: ICANN zone-file snapshots, 2013–2018 (legacy archive)
Jun 30, 2016 – Jul 17, 2016Registrar: Registrar Network Solutions, LLC (IANA 2) in the WHOIS and RDAP records held for contemporaryobgyn.net, from Jun 30, 2016 to Jul 17, 2016.Source: WHOIS / RDAP archive (who.is)
Jun 30, 2016 – Jan 27, 2026
“translates key advances in the specialty into excellence in day-to-day practice. It combines contemporary critical thinking from top academic physicians and evidence-based insights from eminent clinicians into expert ar…”
Source: AboutUs wiki archive, 2007
Current AboutUs recordJul 8, 2026 – Aug 22, 2026 (latest)Authority and Safety last refreshed Aug 22, 2026.Source: AboutUs checks
CSC Corporate Domains, Inc.
Jul 11, 2018 – Sep 29, 2026 (latest)
Registrar CSC Corporate Domains, Inc. (IANA 299) in the registration data recorded, first on Jul 11, 2018 and most recently on Sep 29, 2026.
Source: RDAP, fetched Aug 22, 2026
Registrant changeJul 11, 2018The registrant name or organization in the registration record changed; first recorded Jul 11, 2018. That can be a rename, a new contact or a sale; the record alone does not say which.Source: WHOIS / RDAP archive (who.is); counted by registrant name and organization only
Registrant changeFeb 13, 2020The registrant name or organization in the registration record changed; first recorded Feb 13, 2020. That can be a rename, a new contact or a sale; the record alone does not say which.Source: WHOIS / RDAP archive (who.is); counted by registrant name and organization only
2 registrant changes, 2016–2026
Nameservers: ubm-us.netJun 30, 2016 – Jul 17, 2016Registration records listed ubm-us.net nameservers (ns1.ubm-us.net, ns2.ubm-us.net, ns3.ubm-us.net) for contemporaryobgyn.net from Jun 30, 2016 to Jul 17, 2016.Source: From registration records (WHOIS / RDAP archive, who.is)
DNS moved to ubm-us.netJun 30, 2016contemporaryobgyn.net's nameservers moved from advanstar.com to ubm-us.net at some point between Apr 1, 2016 and Jun 30, 2016. Last seen at advanstar.com: Apr 1, 2016 (ICANN zone-file snapshot). First seen at ubm-us.net: Jun 30, 2016 (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 (ICANN zone-file snapshot → registration record)
Nameservers: ubm-us.netSep 3, 2016ubm-us.net (ns1.ubm-us.net, ns2.ubm-us.net, ns3.ubm-us.net) were the nameservers listed for contemporaryobgyn.net 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)
Nameservers: ubmdns.comApr 3, 2018ubmdns.com (ns1.ubmdns.com, ns2.ubmdns.com) were the nameservers listed for contemporaryobgyn.net at every ICANN zone-file snapshot AboutUs holds from Apr 3, 2018 to Apr 3, 2018 (snapshots exist for only part of 2013–2018).Source: ICANN zone-file snapshots, 2013–2018 (legacy archive)
DNS moved to ubmdns.comApr 3, 2018contemporaryobgyn.net's nameservers moved from ubm-us.net to ubmdns.com at some point between Sep 3, 2016 and Apr 3, 2018. Last seen at ubm-us.net: Sep 3, 2016 (ICANN zone-file snapshot). First seen at ubmdns.com: Apr 3, 2018 (ICANN zone-file snapshot). AboutUs holds no nameserver records for the 19 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: ubmdns.comJul 11, 2018 – Apr 14, 2019Registration records listed ubmdns.com nameservers (ns1.ubmdns.com, ns2.ubmdns.com) for contemporaryobgyn.net from Jul 11, 2018 to Apr 14, 2019.Source: From registration records (WHOIS / RDAP archive, who.is)
Nameservers: CloudflareNameservers: CloudflareSep 19, 2019 – Jan 27, 2026Registration records listed Cloudflare nameservers (kiki.ns.cloudflare.com, pete.ns.cloudflare.com) for contemporaryobgyn.net from Sep 19, 2019 to Jan 27, 2026.Source: From registration records (WHOIS / RDAP archive, who.is)
DNS moved to CloudflareSep 19, 2019contemporaryobgyn.net's nameservers moved from ubmdns.com to Cloudflare at some point between Apr 14, 2019 and Sep 19, 2019. Last seen at ubmdns.com: Apr 14, 2019 (registration record). First seen at Cloudflare: Sep 19, 2019 (registration record). 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 (registration record → registration record)
Amazon
Oct 30, 2025 – Nov 9, 2026
Amazon issued 4 certificates for contemporaryobgyn.net from Oct 30, 2025, the latest valid until Apr 15, 2027.
Source: Certificate Transparency logs (AboutUs's own certificate-log reader)
Google Trust ServicesApr 7, 2026 – Nov 9, 2026Google Trust Services issued 14 certificates for contemporaryobgyn.net from Apr 7, 2026, the latest valid until Feb 4, 2027.Source: Certificate Transparency logs (AboutUs's own certificate-log reader)
Let's EncryptApr 11, 2026 – Nov 9, 2026 (latest)Let's Encrypt issued 14 certificates for contemporaryobgyn.net from Apr 11, 2026, the latest valid until Jan 28, 2027. Seen in use on Sep 29, 2026.Source: Certificate Transparency logs (AboutUs's own certificate-log reader); TLS check, Sep 29, 2026
Sectigo LimitedMay 8, 2026 – Aug 6, 2026Sectigo Limited issued 2 certificates for contemporaryobgyn.net from May 8, 2026, the latest valid until Aug 6, 2026.Source: Certificate Transparency logs (AboutUs's own certificate-log reader)
SSL CorporationJul 30, 2026 – Nov 9, 2026SSL Corporation issued 3 certificates for contemporaryobgyn.net from Jul 30, 2026, the latest valid until Dec 31, 2026.Source: Certificate Transparency logs (AboutUs's own certificate-log reader)
Registrant: Registration records for contemporaryobgyn.net are held from Jun 30, 2016 to Jan 27, 2026 (32 records). 2 changes of registrant name or organization are marked. 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
Jun 30, 2016 – Jul 17, 2016Zone file: Registration records listed ubm-us.net nameservers (ns1.ubm-us.net, ns2.ubm-us.net, ns3.ubm-us.net) for contemporaryobgyn.net from Jun 30, 2016 to Jul 17, 2016.Source: From registration records (WHOIS / RDAP archive, who.is)
Jun 30, 2016Zone file: contemporaryobgyn.net's nameservers moved from advanstar.com to ubm-us.net at some point between Apr 1, 2016 and Jun 30, 2016. Last seen at advanstar.com: Apr 1, 2016 (ICANN zone-file snapshot). First seen at ubm-us.net: Jun 30, 2016 (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 (ICANN zone-file snapshot → registration record)
Sep 3, 2016Zone file: ubm-us.net (ns1.ubm-us.net, ns2.ubm-us.net, ns3.ubm-us.net) were the nameservers listed for contemporaryobgyn.net 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)
Apr 3, 2018Zone file: ubmdns.com (ns1.ubmdns.com, ns2.ubmdns.com) were the nameservers listed for contemporaryobgyn.net at every ICANN zone-file snapshot AboutUs holds from Apr 3, 2018 to Apr 3, 2018 (snapshots exist for only part of 2013–2018).Source: ICANN zone-file snapshots, 2013–2018 (legacy archive)
Apr 3, 2018Zone file: contemporaryobgyn.net's nameservers moved from ubm-us.net to ubmdns.com at some point between Sep 3, 2016 and Apr 3, 2018. Last seen at ubm-us.net: Sep 3, 2016 (ICANN zone-file snapshot). First seen at ubmdns.com: Apr 3, 2018 (ICANN zone-file snapshot). AboutUs holds no nameserver records for the 19 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)
Jul 11, 2018 – Sep 29, 2026Registrar: Registrar CSC Corporate Domains, Inc. (IANA 299) in the registration data recorded, first on Jul 11, 2018 and most recently on Sep 29, 2026.Source: RDAP, fetched Aug 22, 2026
Jul 11, 2018Registrant: The registrant name or organization in the registration record changed; first recorded Jul 11, 2018. That can be a rename, a new contact or a sale; the record alone does not say which.Source: WHOIS / RDAP archive (who.is); counted by registrant name and organization only
Jul 11, 2018 – Apr 14, 2019Zone file: Registration records listed ubmdns.com nameservers (ns1.ubmdns.com, ns2.ubmdns.com) for contemporaryobgyn.net from Jul 11, 2018 to Apr 14, 2019.Source: From registration records (WHOIS / RDAP archive, who.is)
Sep 19, 2019 – Jan 27, 2026Zone file: Registration records listed Cloudflare nameservers (kiki.ns.cloudflare.com, pete.ns.cloudflare.com) for contemporaryobgyn.net from Sep 19, 2019 to Jan 27, 2026.Source: From registration records (WHOIS / RDAP archive, who.is)
Sep 19, 2019Zone file: contemporaryobgyn.net's nameservers moved from ubmdns.com to Cloudflare at some point between Apr 14, 2019 and Sep 19, 2019. Last seen at ubmdns.com: Apr 14, 2019 (registration record). First seen at Cloudflare: Sep 19, 2019 (registration record). 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 (registration record → registration record)
Feb 13, 2020Registrant: The registrant name or organization in the registration record changed; first recorded Feb 13, 2020. That can be a rename, a new contact or a sale; the record alone does not say which.Source: WHOIS / RDAP archive (who.is); counted by registrant name and organization only
Oct 20, 2025 – Nov 9, 2026Certificate: DigiCert Inc issued 2 certificates for contemporaryobgyn.net from Oct 20, 2025, the latest valid until May 24, 2027.Source: Certificate Transparency logs (AboutUs's own certificate-log reader)
Oct 30, 2025 – Nov 9, 2026Certificate: Amazon issued 4 certificates for contemporaryobgyn.net from Oct 30, 2025, the latest valid until Apr 15, 2027.Source: Certificate Transparency logs (AboutUs's own certificate-log reader)
Apr 7, 2026 – Nov 9, 2026Certificate: Google Trust Services issued 14 certificates for contemporaryobgyn.net from Apr 7, 2026, the latest valid until Feb 4, 2027.Source: Certificate Transparency logs (AboutUs's own certificate-log reader)
Apr 11, 2026 – Nov 9, 2026Certificate: Let's Encrypt issued 14 certificates for contemporaryobgyn.net from Apr 11, 2026, the latest valid until Jan 28, 2027. Seen in use on Sep 29, 2026.Source: Certificate Transparency logs (AboutUs's own certificate-log reader); TLS check, Sep 29, 2026
May 8, 2026 – Aug 6, 2026Certificate: Sectigo Limited issued 2 certificates for contemporaryobgyn.net from May 8, 2026, the latest valid until Aug 6, 2026.Source: Certificate Transparency logs (AboutUs's own certificate-log reader)
Jul 8, 2026 – Aug 22, 2026AboutUs record: Authority and Safety last refreshed Aug 22, 2026.Source: AboutUs checks
Jul 30, 2026 – Nov 9, 2026Certificate: SSL Corporation issued 3 certificates for contemporaryobgyn.net from Jul 30, 2026, the latest valid until Dec 31, 2026.Source: Certificate Transparency logs (AboutUs's own certificate-log reader)
Registered 1999 · site is live · HTTPS valid
ContemporaryObgyn.net
Contemporary OB/GYN is a medical publication for obstetrician-gynecologists, published 14 times annually by Advanstar Communications. Since 1973, it has delivered evidence-based clinical articles, research insights, and specialty news to physicians in the ob/gyn field, with an editorial board led by Charles J. Lockwood, MD.
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 #212,389)+5
Verified continuity: 27.6 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 contemporaryobgyn.net said about itself, 2007
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
2007
translates key advances in the specialty into excellence in day-to-day practice. It combines contemporary critical thinking from top academic physicians and evidence-based insights from eminent clinicians into expert articles that are concise, thorough and compellingly illustrated. Contemporary OB/GYN's Editor in Chief, Charles J.
Site history
Dated record — historical facts always carry their date.
✓ domain continuity 27 years registered✓ live verified Nov 9, 2026
Safety evidence
No unexpired threat-feed result; name-similarity check available (recorded about 78 days ago); 3/3 transport and email checks available (oldest recorded about 78 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