core.edu

Valid Email Server
Domain Lookup › core.edu
Live data — DNS records and disposable check were just fetched and saved.

Domain Overview

DNS: ⚡ live Checker: ⚡ live
core.edu
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]

Checked via [email protected] · 2026-05-20 21:25:02 UTC · ↺ Refresh

MX Hostnames

  • core-edu.mail.protection.outlook.com

MX Priorities

No priority data.

A / AAAA Records

  • 161.35.105.142

Mail Server IPs

No IPs resolved.

SOA Record

No SOA record found.

Nameservers (NS)

ns-36.awsdns-04.com
ns-519.awsdns-00.net
ns-1251.awsdns-28.org
ns-1759.awsdns-27.co.uk

SPF Record

✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com include:autotask.net include:spf.US.exclaimer.net include:22235947.spf01.hubspotemail.net -all
📊 DNS lookups: 4/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✗ p=none
v=DMARC1; p=none;
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)

DKIM Selectors

✓ 2 found
selector1._domainkey
selector2._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: selector1

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

All TXT Records

14 records
  • docusign=98b1144c-73b6-449c-a58f-50e3c33e798a
  • google-site-verification=H3iF77tgZdoa5QpNSDDC5xjm0vJpaoq7tlE_wKBpwrk
  • google-site-verification=UXYxbTL8Z4HGQQ3sbdaMAm3jLLsezdUTPD-bEZMaLiE
  • google-site-verification=h6LLu4LCshibt6CSG2QiroXm2IOhf44MZfyGKt1c5S0
  • openai-domain-verification=dv-O8qn64UBnV88jKgQkYSBOznU
  • rippling-domain-verification=980eaea1e7fc1673
  • smartsheet-site-validation=5HgvWvIU6b8NlFN6OcRIdpJWJEY4XkuH
  • SPFv=spf1 include:spf.protection.outlook.com include:autotask.net include:spf.US.exclaimer.net include:22235947.spf01.hubspotemail.net -all
  • work-accounts-domain-verification=KlXDo9SZIT32d6fPpdfaC0jzdmPHZF
  • ZOOM_verify_6gse2whher9tv9gU0kvyW2
  • apple-domain-verification=a0tFhi1DNugIxmyN
  • asv=a78d05d882ed56ddfa53285f1efaae01
  • atlassian-domain-verification=tPxdVODnwgviTjSxRjegaVRhs525TwvY3daOjuObw2bFbUjFM1Ev/aiHN5NzkWmi
  • atlassian-sending-domain-verification=80d2d486-04a8-440a-9940-637a07bd64df
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