Verifying against the live site and live WHOIS/DNS…
Common questions
Is oppenheimer.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 oppenheimer.com?
Nobody has completed AboutUs's owner verification for oppenheimer.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.
3 of 4 safety checks passed (Oct 26, 2026).
Registered 1998 · site is live · HTTPS valid
Oppenheimer.com
For more than 115 years, Oppenheimer attorneys and staff have been dedicated to providing exceptional client service and outstanding legal counsel to businesses of all sizes.
Checked in the last 30 daysOlder, dated recordFrom registration records
Registered 27 years ago · on AboutUs since 2006 · 1 registrar change since Dec 26, 2013 · 2 ownership changes since 2007 · last checked Sep 28, 2026.
Registration
RegisteredNov 19, 1998oppenheimer.com was registered on Nov 19, 1998.Source: RDAP, fetched Sep 1, 2026
AboutUs record
AboutUs wiki pageJun 21, 2006An AboutUs wiki page described oppenheimer.com from Jun 21, 2006 to Jun 21, 2006 (1 edit).Source: AboutUs wiki archive, 2006–2023Said about itself in 2006Jul 1, 2006
Registrar
Network Solutions, LLCDec 26, 2013 – Jul 24, 2018Registrar Network Solutions, LLC (IANA 2) in the WHOIS and RDAP records held for oppenheimer.com, from Dec 26, 2013 to Jul 24, 2018.Source: WHOIS / RDAP archive (who.is)CSC Corporate Domains, Inc.
Ownership
Ownership recordsOct 1, 2007 – Jun 24, 2026Registration records for oppenheimer.com are held from Oct 1, 2007 to Jun 24, 2026 (123 records). 2 changes of registrant name or organization are 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, Apr 2016 – Jul 2017Nameservers: twtelecom.netNameservers: twtelecom.netOct 1, 2007 – Oct 17, 2013Registration records listed twtelecom.net nameservers (ns1.iplt.twtelecom.net, ns1.milw.twtelecom.net) for oppenheimer.com from Oct 1, 2007 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)
Certificate
DigiCert IncDigiCert IncJan 15, 2026 – Oct 26, 2026DigiCert Inc issued 3 certificates for oppenheimer.com from Jan 15, 2026, the latest valid until Jan 31, 2027.Source: Certificate Transparency logs (AboutUs's own certificate-log reader)Let's Encrypt
200020102020Jan ’26Oct ’26← last 12 months, drawn wider
Every dated fact on this lifeline (20)
Nov 19, 1998Registration: oppenheimer.com was registered on Nov 19, 1998.Source: RDAP, fetched Sep 1, 2026
Jun 21, 2006AboutUs record: An AboutUs wiki page described oppenheimer.com from Jun 21, 2006 to Jun 21, 2006 (1 edit).Source: AboutUs wiki archive, 2006–2023
Jul 1, 2006AboutUs record: “For more than 115 years, Oppenheimer attorneys and staff have been dedicated to providing exceptional client service and outstanding legal counsel to businesses of all sizes. We have an in-depth understanding of many in…”Source: AboutUs wiki archive, 2006
Oct 1, 2007 – Jun 24, 2026Ownership: Registration records for oppenheimer.com are held from Oct 1, 2007 to Jun 24, 2026 (123 records). 2 changes of registrant name or organization are marked. Privacy-service and redaction changes are not counted.Source: WHOIS / RDAP archive (who.is); counted by registrant name and organization only
Oct 1, 2007 – Oct 17, 2013Zone file: Registration records listed twtelecom.net nameservers (ns1.iplt.twtelecom.net, ns1.milw.twtelecom.net) for oppenheimer.com from Oct 1, 2007 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)
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
Domain registered Nov 19, 1998 — 27 years old.
latest result
Registrar on record: CSC Corporate Domains, Inc. — unchanged since AboutUs began tracking (Sep 1, 2026).
latest result
HTTPS request succeeded for oppenheimer.com.
checked Oct 3, 2026
The site names Oppenheimer & Co. Inc as the organisation behind it.
checked Oct 3, 2026
The live front page reads as a finance site that sells its own services, mainly for the public as customers.
Authority 59/100— ahead of 59% of the August 2026 scored sampleClear
Why this authority score
59 is a percentile: higher than 59% of sites we score.
How it's calculated
Prominence (Tranco rank #375,665)+5
Verified continuity: 27.9 years (RDAP registration)+11
Identity corroboration (capped)+4
Security & email hygiene+2
Calibration adjustment (published map)+9
Model score: 31/99 — what these reason lines add up to.
Published Authority (percentile): 59/100 — this site's rank against the August 2026 scored sample. Public Authority is capped at 99.
What oppenheimer.com 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
For more than 115 years, Oppenheimer attorneys and staff have been dedicated to providing exceptional client service and outstanding legal counsel to businesses of all sizes. We have an in-depth understanding of many industries, especially those in the technology sectors of medtech and the Internet & e-commerce arena.
Site history
Dated record — historical facts always carry their date.
✓ domain continuity 27 years registered✓ live verified Oct 26, 2026
“For more than 115 years, Oppenheimer attorneys and staff have been dedicated to providing exceptional client service and outstanding legal counsel to businesses of all sizes. We have an in-depth understanding of many in…”
Source: AboutUs wiki archive, 2006
Current AboutUs recordJul 4, 2026 – Aug 23, 2026 (latest)Authority and Safety last refreshed Aug 23, 2026.Source: AboutUs checks
CSC Corporate Domains, Inc.
Jan 6, 2019 – Sep 29, 2026 (latest)
Registrar CSC Corporate Domains, Inc. (IANA 299) in the registration data recorded, first on Jan 6, 2019 and most recently on Sep 29, 2026.
Source: RDAP, fetched Sep 1, 2026
Ownership change
Jun 20, 2018
The registrant name or organization in the registration record changed; first recorded Jun 20, 2018. Who it changed to is in the full report.
Source: WHOIS / RDAP archive (who.is); counted by registrant name and organization only
Ownership changeJan 6, 2019The registrant name or organization in the registration record changed; first recorded Jan 6, 2019. Who it changed to is in the full report.Source: WHOIS / RDAP archive (who.is); counted by registrant name and organization only
2 ownership changes, 2007–2026
Nameservers: twtelecom.netOct 18, 2013 – Apr 1, 2016twtelecom.net (ns1.iplt.twtelecom.net, ns1.milw.twtelecom.net) were the nameservers listed for oppenheimer.com 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)
Nameservers: worldnic.comJul 7, 2017 – Feb 13, 2018Registration records listed worldnic.com nameservers (ns83.worldnic.com, ns84.worldnic.com) for oppenheimer.com from Jul 7, 2017 to Feb 13, 2018.Source: From registration records (WHOIS / RDAP archive, who.is)
DNS moved to worldnic.comJul 7, 2017oppenheimer.com's nameservers moved from twtelecom.net to worldnic.com at some point between Apr 1, 2016 and Jul 7, 2017. Last seen at twtelecom.net: Apr 1, 2016 (ICANN zone-file snapshot). First seen at worldnic.com: Jul 7, 2017 (registration record). AboutUs holds no nameserver records for the 15 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: opco.comApr 3, 2018opco.com (ns-3.opco.com, ns-5.opco.com) were the nameservers listed for oppenheimer.com 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 opco.comApr 3, 2018oppenheimer.com's nameservers moved from worldnic.com to opco.com at some point between Feb 13, 2018 and Apr 3, 2018. Last seen at worldnic.com: Feb 13, 2018 (registration record). First seen at opco.com: Apr 3, 2018 (ICANN zone-file snapshot). AboutUs holds no nameserver records for the 49 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 → ICANN zone-file snapshot)
Nameservers: opco.comNameservers: opco.comJun 20, 2018 – Jun 24, 2026Registration records listed opco.com nameservers (ns-3.opco.com, ns-5.opco.com) for oppenheimer.com from Jun 20, 2018 to Jun 24, 2026.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: ns-4.opco.com, ns-5.opco.com.Source: ICANN CZDS zone file, snapshot Sep 24, 2026
Apr 15, 2026 – Oct 26, 2026
Let's Encrypt issued 9 certificates for oppenheimer.com from Apr 15, 2026, the latest valid until Jan 7, 2027.
Source: Certificate Transparency logs (AboutUs's own certificate-log reader)
Google Trust ServicesMay 8, 2026 – Oct 26, 2026 (latest)Google Trust Services issued 12 certificates for oppenheimer.com from May 8, 2026, the latest valid until Jan 10, 2027. Seen in use on Sep 28, 2026.Source: Certificate Transparency logs (AboutUs's own certificate-log reader); TLS check, Sep 28, 2026
Oct 18, 2013 – Apr 1, 2016
Zone file: twtelecom.net (ns1.iplt.twtelecom.net, ns1.milw.twtelecom.net) were the nameservers listed for oppenheimer.com 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)
Dec 26, 2013 – Jul 24, 2018Registrar: Registrar Network Solutions, LLC (IANA 2) in the WHOIS and RDAP records held for oppenheimer.com, from Dec 26, 2013 to Jul 24, 2018.Source: WHOIS / RDAP archive (who.is)
Jul 7, 2017 – Feb 13, 2018Zone file: Registration records listed worldnic.com nameservers (ns83.worldnic.com, ns84.worldnic.com) for oppenheimer.com from Jul 7, 2017 to Feb 13, 2018.Source: From registration records (WHOIS / RDAP archive, who.is)
Jul 7, 2017Zone file: oppenheimer.com's nameservers moved from twtelecom.net to worldnic.com at some point between Apr 1, 2016 and Jul 7, 2017. Last seen at twtelecom.net: Apr 1, 2016 (ICANN zone-file snapshot). First seen at worldnic.com: Jul 7, 2017 (registration record). AboutUs holds no nameserver records for the 15 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)
Apr 3, 2018Zone file: opco.com (ns-3.opco.com, ns-5.opco.com) were the nameservers listed for oppenheimer.com 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: oppenheimer.com's nameservers moved from worldnic.com to opco.com at some point between Feb 13, 2018 and Apr 3, 2018. Last seen at worldnic.com: Feb 13, 2018 (registration record). First seen at opco.com: Apr 3, 2018 (ICANN zone-file snapshot). AboutUs holds no nameserver records for the 49 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 → ICANN zone-file snapshot)
Jun 20, 2018Ownership: The registrant name or organization in the registration record changed; first recorded Jun 20, 2018. Who it changed to is in the full report.Source: WHOIS / RDAP archive (who.is); counted by registrant name and organization only
Jun 20, 2018 – Jun 24, 2026Zone file: Registration records listed opco.com nameservers (ns-3.opco.com, ns-5.opco.com) for oppenheimer.com from Jun 20, 2018 to Jun 24, 2026.Source: From registration records (WHOIS / RDAP archive, who.is)
Jan 6, 2019 – Sep 29, 2026Registrar: Registrar CSC Corporate Domains, Inc. (IANA 299) in the registration data recorded, first on Jan 6, 2019 and most recently on Sep 29, 2026.Source: RDAP, fetched Sep 1, 2026
Jan 6, 2019Ownership: The registrant name or organization in the registration record changed; first recorded Jan 6, 2019. Who it changed to is in the full report.Source: WHOIS / RDAP archive (who.is); counted by registrant name and organization only
Jan 15, 2026 – Oct 26, 2026Certificate: DigiCert Inc issued 3 certificates for oppenheimer.com from Jan 15, 2026, the latest valid until Jan 31, 2027.Source: Certificate Transparency logs (AboutUs's own certificate-log reader)
Apr 15, 2026 – Oct 26, 2026Certificate: Let's Encrypt issued 9 certificates for oppenheimer.com from Apr 15, 2026, the latest valid until Jan 7, 2027.Source: Certificate Transparency logs (AboutUs's own certificate-log reader)
May 8, 2026 – Oct 26, 2026Certificate: Google Trust Services issued 12 certificates for oppenheimer.com from May 8, 2026, the latest valid until Jan 10, 2027. Seen in use on Sep 28, 2026.Source: Certificate Transparency logs (AboutUs's own certificate-log reader); TLS check, Sep 28, 2026
Jul 4, 2026 – Aug 23, 2026AboutUs record: Authority and Safety last refreshed Aug 23, 2026.Source: AboutUs checks
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: ns-4.opco.com, ns-5.opco.com.Source: ICANN CZDS zone file, snapshot Sep 24, 2026
Safety evidence
No unexpired threat-feed result; name-similarity check available (recorded about 63 days ago); 3/3 transport and email checks available (oldest recorded about 63 days ago). This is evidence coverage, not a probability that a website is safe.