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Rank #2,810Updated November 10, 2026

pubchem.ncbi.nlm.nih.gov

PubChem

pubchem.ncbi.nlm.nih.gov is registered with get.gov since October 2, 1997 (29.1 years). The registration expires on August 22, 2027. The site runs on Google Cloud, Content Security Policy, HSTS and 1 other technologies. Its email security grade is B. Its SSL certificate is issued by GoDaddy.com and is valid for 124 more days.

Domain age
29.1 yrs
Technologies
4
Email security
B
SSL days left
124

Registration

Registrarget.gov
IANA ID8888888
RegisteredOctober 2, 1997
ExpiresAugust 22, 2027
UpdatedAugust 14, 2026
Statusserver transfer prohibited
Name serversns.nih.gov, ns2.nih.gov, ns3.nih.gov
DNSSECSigned
RegistrantDepartment of Health and Human Services, United States

DNS records

TypeValueTTL
A34.107.134.595
AAAA2600:1901:0:c831::60

Technology stack

SSL certificate

ValidValid
IssuerUS, GoDaddy TLS Intermediate CA DV - R1v1, GoDaddy.com
ExpiresMarch 14, 2027
Days remaining124
ProtocolTLSv1.3
Names*.ncbi.nlm.nih.gov, ncbi.nlm.nih.gov

Email security

BScore 83/100 across SPF, DMARC, DKIM, MTA-STS and BIMI.
  • warnNo MTA-STS: mail sent to you can be downgraded to an unencrypted connection.
  • warnNo TLS-RPT record, so you won't hear about failed encrypted deliveries.
  • warnNo BIMI record (optional: shows your logo next to your emails in supporting inboxes).
  • goodSPF record found.
  • goodSPF ends with ~all: servers you have not listed are marked as suspicious (soft fail).
  • goodDMARC policy is reject: mail that fails authentication is blocked.
  • goodDMARC aggregate reports are sent to mailto:[email protected], mailto:[email protected].
  • goodDKIM keys found (selector: selector1, selector2, k1, k2, s1, s2).
  • good8 MX record(s) found.

Homepage metadata

TitlePubChem
DescriptionSearch and explore chemical information in the world's largest free chemistry database. Search chemicals by name, molecular formula, structure, and other identifiers. Find chemical and physical properties, biological activities, safety and toxicity information, patents, literature citations and more.
Languageen
Canonicalhttps://pubchem.ncbi.nlm.nih.gov/
Structured dataOrganization
IndexableYes
Word count0

About pubchem.ncbi.nlm.nih.gov

Who is the registrar of pubchem.ncbi.nlm.nih.gov?

pubchem.ncbi.nlm.nih.gov is registered with get.gov (IANA ID 8888888).

When does pubchem.ncbi.nlm.nih.gov expire?

The current registration of pubchem.ncbi.nlm.nih.gov expires on August 22, 2027. It was first registered on October 2, 1997.

What technology does pubchem.ncbi.nlm.nih.gov use?

We detected 4 technologies on pubchem.ncbi.nlm.nih.gov, including Google Cloud, Content Security Policy, HSTS, Apache HTTP Server.

Does pubchem.ncbi.nlm.nih.gov protect its email with SPF and DMARC?

pubchem.ncbi.nlm.nih.gov scores 83/100 (grade B) for email security. No MTA-STS: mail sent to you can be downgraded to an unencrypted connection. No TLS-RPT record, so you won't hear about failed encrypted deliveries.