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Gridlode
Rank #3,405Updated November 10, 2026

eso.org

ESO

eso.org is registered with Key-Systems GmbH since February 6, 1991 (35.8 years). The registration expires on February 7, 2031. The site runs on Django, Font Awesome, Python and 2 other technologies. Its email security grade is D. Its SSL certificate is issued by Hellenic Academic and Research Institutions CA and is valid for 151 more days.

Domain age
35.8 yrs
Technologies
5
Email security
D
SSL days left
151

Registration

RegistrarKey-Systems GmbH
IANA ID269
RegisteredFebruary 6, 1991
ExpiresFebruary 7, 2031
UpdatedAugust 12, 2026
Statusclient transfer prohibited
Name serversdnsslave1.hq.eso.org, dnsslave1.sc.eso.org, dnsslave2.hq.eso.org, dnsslave2.sc.eso.org
DNSSECNot signed

DNS records

TypeValueTTL
A134.171.75.1300
MXeso-org.mail.protection.outlook.com 101800
NSdnsslave2.sc.eso.org1814400
NSdnsslave1.hq.eso.org1814400
NSdnsslave2.hq.eso.org1814400
NSdnsslave1.sc.eso.org1814400
TXTHARICA-L4A3MUhIAwqu1aMgu5e300
TXTadobe-idp-site-verification=0288fe76f2783415b251fcbd6e53c4e2cb945df670c1acb5ff4828bf13163659300
TXTapple-domain-verification=NqSEBIFXGUTBfcfp300
TXTgoogle-site-verification=42STXdibM2OWALosfjc5uk4o9q8_ZUTYtMniIgWmBs0300
TXTgoogle-site-verification=VF1ZBZMCUAGNq15pTdA0M84ROxJLO8Y5uQSM8zjBt5E300
TXTzr9W1tIwY2CIMCuH7FeI4CQqbbMUGAwWGci3CohpHbSGEv2Pa3S7Vv55j2gEMaGHxHnLXUg+WDebArMVjccZiw==300
TXTgoogle-site-verification=QSkhr8v4m0uSSMqPUsZ05Pmla3_xgrBO_pMY5ZsjTIY300
TXTfc0509e688cefd638caf6699d4112b50978229f808715ce2ab300
TXTjamf-site-verification=tcqgqvnDkbUg5zDue830CA300
TXTautodesk-domain-verification=kxQmuQwAneo4Gb9Go5Na300
TXTcisco-ci-domain-verification=54ef0413fbaa4879bfce2916c97ec6bf316d462a9e9cd92413984c18318d9451300
TXTv=spf1 a:web-app-01.inriva.com ip4:85.184.250.78 ip4:134.171.8.115 ip4:134.171.8.120 include:rp.email.oci.oraclecloud.eu include:spf_c.oraclecloud.com include:spf.protection.outlook.com include:mail.infrastructure.servers.ptfse.net include:servers.mcsv.net ~all300

Technology stack

Programming language
Security
Web framework
Web server

SSL certificate

ValidValid
IssuerGR, GEANT TLS RSA 1, Hellenic Academic and Research Institutions CA
ExpiresApril 10, 2027
Days remaining151
ProtocolTLSv1.3
Nameseso.org, demo.eso.org, cms-author.hq.eso.org, cms-pdispatch1.hq.eso.org, w4.hq.eso.org, astronet.sc.eso.org, www.hq.eso.org, www.eso.org, groupware.eso.org, next.eso.org, w4n.hq.eso.org, cms-publish2.hq.eso.org

Email security

DScore 63/100 across SPF, DMARC, DKIM, MTA-STS and BIMI.
  • warnSPF uses 8 of the 10 allowed DNS lookups. Adding another service may break it.
  • warnDMARC policy is none (monitoring only). Spoofed mail is still delivered.
  • 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 aggregate reports are sent to mailto:[email protected].
  • goodDKIM keys found (selector: k2).
  • good1 MX record(s) found. Mail is handled by Microsoft 365.

Homepage metadata

TitleESO
DescriptionESO, European Organisation for Astronomical Research in the Southern Hemisphere
Languageen
IndexableYes
Word count3064

About eso.org

Who is the registrar of eso.org?

eso.org is registered with Key-Systems GmbH (IANA ID 269).

When does eso.org expire?

The current registration of eso.org expires on February 7, 2031. It was first registered on February 6, 1991.

What technology does eso.org use?

We detected 5 technologies on eso.org, including Font Awesome, Python, HSTS, Django, Nginx.

Does eso.org protect its email with SPF and DMARC?

eso.org scores 63/100 (grade D) for email security. SPF uses 8 of the 10 allowed DNS lookups. Adding another service may break it. DMARC policy is none (monitoring only). Spoofed mail is still delivered.

What are the name servers of eso.org?

eso.org uses dnsslave2.sc.eso.org, dnsslave1.hq.eso.org, dnsslave2.hq.eso.org, dnsslave1.sc.eso.org.