college.harvard.edu

Valid Email Server
Domain Lookup › college.harvard.edu

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
college.harvard.edu
Yes
✓ Yes
Google
No
No
⚠ Yes
No
No
Did you mean: [email protected]

Checked via [email protected] · 2026-03-24 03:18:19 UTC · ↺ Refresh

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MX Hostnames

  • alt4.aspmx.l.google.com
  • alt1.aspmx.l.google.com
  • alt3.aspmx.l.google.com
  • aspmx.l.google.com
  • alt2.aspmx.l.google.com

MX Priorities

  • alt2.aspmx.l.google.com: 5
  • alt4.aspmx.l.google.com: 10
  • aspmx.l.google.com: 1
  • alt1.aspmx.l.google.com: 5
  • alt3.aspmx.l.google.com: 10

A / AAAA Records

  • 23.185.0.3
  • 2620:12a:8000::3
  • 2620:12a:8001::3

Mail Server IPs

  • 172.253.116.27 ↩ dj-in-f27.1e100.net
  • 2a00:1450:400b:c02::1b ↩ dj-in-f27.1e100.net
  • 173.194.76.26 ↩ ws-in-f26.1e100.net
  • 2a00:1450:400c:c00::1a ↩ ws-in-x1a.1e100.net
  • 192.178.218.26 ↩ yuiadtq-in-f26.1e100.net
  • 2607:f8b0:4004:c1b::1b ↩ wv-in-f27.1e100.net
  • 108.177.123.27 ↩ lcscld-in-f27.1e100.net
  • 2800:3f0:4003:c0f::1a (no PTR)
  • 192.178.223.27 ↩ yulhrs-in-f27.1e100.net
  • 2a00:1450:4009:c0f::1a ↩ yulhrs-in-f26.1e100.net

SOA Record

Raw SOA a1-171.akam.net netmanager.harvard.edu 2023062051 10800 3600 2419200 3600
Primary NS (mname)
a1-171.akam.net
Admin Email (rname)
netmanager@harvard.edu
Serial
2023062051
Refresh
10800s
Retry
3600s
Expire
2419200s
Minimum TTL
3600s

Nameservers (NS)

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

SPF Record

✓ Soft Fail (~all)
v=spf1 include:_spf.google.com include:spf.protection.outlook.com include:_tuf-spf.touchnet.com ip4:67.231.156.27 ip4:67.231.148.27 ip4:128.103.0.0/16 ip4:140.247.0.0/16 ip4:34.194.230.233 ip4:34.230.107.215 ~all
📊 DNS lookups: 3/10
~ Soft fail (~all) — moderate enforcement

DMARC Record

✗ Missing

No DMARC record — emails cannot be rejected on auth failure.

DKIM Selectors

✗ None detected

No DKIM records found for common selectors — your provider may use a custom selector name.

Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses

All TXT Records

9 records
  • facebook-domain-verification=evjic6fgug563tde03ca5ygz8o6jms
  • atlassian-domain-verification=ASRKBXyOafZgDCRWh1Ylv34hiOSMgAIoNXs8H57rR3aTkuOD5KwJfUN9G3f7Ah/H
  • google-site-verification=yPZ1alZz8n8L4yItUCcilR2youpt_JbyE12AGJGjzDM
  • openai-domain-verification=dv-cfkcr2NED6B9Gqg5NBiGISyj
  • google-site-verification=ssYdtRmxpbvhmxR0i-m6dnr7W3PyqqeHpFM0dWBQFZc
  • anthropic-domain-verification-0rkbqh=0DssF7LU9YH4jfv3uknEh2unE
  • SPFv=spf1 include:_spf.google.com include:spf.protection.outlook.com include:_tuf-spf.touchnet.com ip4:67.231.156.27 ip4:67.231.148.27 ip4:128.103.0.0/16 ip4:140.247.0.0/16 ip4:34.194.230.233 ip4:34.230.107.215 ~all
  • google-site-verification=NhAQ_8BikpDYaLtxhVHeg7SuwkaLw25FBNGLiMd7XWg
  • google-site-verification=2gTUU-AWTziWPzmSWjw8qYgQeErawdxhMhX13dUJiAs
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