DOMAINS CHANGES SERVICES CERTS API

extension.harvard.edu

Observed 2026-06-15T12:17:25.394476532+00:00 (4h ago). Every field below was attested with an Ed25519 signature at scan time.

Don't trust this page — check the math. Verification runs entirely in your browser. Nothing leaves your machine.

Verify this receipt

Ed25519 Receipt

Receipt ID
0799465e-a724-447f-9d09-73c12501e6ed
Output Hash
4cea5098e363551462fe22264f4174650042778f0c1e1618f0d216c36a9fbc69
Signature
ed25519:c239c9c2f39ce4e8ed424beec623d119668f15a15026d727d979b24f4ab99c3eb7bf53039e919c41ce2a8119ace0426a85969eacb414978cde97eea6d04a560c
Public Key
ed25519:d3f6015a95abdad7e8166ad80938a5885500170bb75f8cdb425b8fd2772bec29
Parent
(genesis)
Plane
fast
Verify this in your browser

DNS Records

A 1

  • 23.185.0.1

AAAA 2

  • 2620:12a:8001::1
  • 2620:12a:8000::1

MX 2

  • {"priority":100,"exchange":"mx0a-00171101.pphosted.com"}
  • {"priority":100,"exchange":"mx0b-00171101.pphosted.com"}

TXT 8

  • google-site-verification=tzmjMGjzKQVBgEZzniAHdkyyh7E3bwl6wAgf0kIfTQM
  • google-site-verification=y1KmMSc7jtK8BUkTSVvhvf4LqRL3OPz3Zy5YKr-VZBE
  • openai-domain-verification=dv-VUo8zaxeVwykPdyNqwwDoWXi
  • anthropic-domain-verification-yma60b=iIYn7CygYmxD9f8ynJOmz5Z5V
  • google-site-verification=KTzOUo7gPXWp3jvnDRB5lCXzpGx2Sh7Osjm_5Pvixa0
  • v=spf1 include:%{i}._ip.%{h}._ehlo.%{d}._spf.vali.email ~all
  • v=DMARC1; p=quarantine; rua=mailto:dmarc_agg@vali.email
  • v=BIMI1; l=https://extension.harvard.edu/wp-content/uploads/sites/8/2024/01/EXT_Shield_Bimi.svg

NS 6

  • a6-66.akam.net
  • a1-171.akam.net
  • a10-66.akam.net
  • a16-64.akam.net
  • a7-65.akam.net
  • a11-67.akam.net

SOA 1

  • {"mname":"a1-171.akam.net","rname":"netmanager.harvard.edu","serial":2023062068,"refresh":10800,"retry":3600,"expire":2419200,"minimum":3600}

SRV 2

  • {"priority":10,"weight":10,"port":5222,"target":"dcedecode2.dce.harvard.edu"}
  • {"priority":10,"weight":10,"port":5269,"target":"dcedecode2.dce.harvard.edu"}

TLS Certificates (3)

Common NameIssuerExpires
alumni.extension.harvard.edu C=US, O=Let's Encrypt, CN=YR1 Fri, 11 Sep 2026 15:20:28 +0000
YR1 C=US, O=ISRG, CN=Root YR Sat, 02 Sep 2028 23:59:59 +0000
Root YR C=US, O=Internet Security Research Group, CN=ISRG Root X1 Thu, 02 Sep 2032 23:59:59 +0000

Subdomains (3)