Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
york.ac.uk
Yes
✓ Yes
Google
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-18 04:11:09 UTC · ↺ Refresh
MX Hostnames
- alt3.aspmx.l.google.com
- alt4.aspmx.l.google.com
- aspmx.l.google.com
- alt1.aspmx.l.google.com
- alt2.aspmx.l.google.com
MX Priorities
- alt1.aspmx.l.google.com: 5
- aspmx.l.google.com: 1
- alt3.aspmx.l.google.com: 10
- alt2.aspmx.l.google.com: 5
- alt4.aspmx.l.google.com: 10
A / AAAA Records
- 144.32.128.115
- 2001:630:61:180::1:73
Mail Server IPs
- 108.177.123.26 ↩ lcscld-in-f26.1e100.net
- 2800:3f0:4003:c0f::1b (no PTR)
- 192.178.218.27 ↩ yuiadtq-in-f27.1e100.net
- 2607:f8b0:4004:c23::1a ↩ yuiadrs-in-f26.1e100.net
- 192.178.223.26 ↩ yulhrs-in-f26.1e100.net
- 2a00:1450:4009:c0f::1a ↩ yulhrs-in-f26.1e100.net
- 172.253.116.27 ↩ dj-in-f27.1e100.net
- 2a00:1450:400b:c02::1b ↩ dj-in-f27.1e100.net
- 173.194.76.27 ↩ ws-in-f27.1e100.net
- 2a00:1450:400c:c00::1b ↩ ws-in-x1b.1e100.net
SOA Record
Raw SOA
nse0m.york.ac.uk hostmaster.york.ac.uk 2018181426 28800 7200 1209600 86400
Primary NS (mname)
nse0m.york.ac.uk
Admin Email (rname)
hostmaster@york.ac.uk
Serial
2018181426
Refresh
28800s
Retry
7200s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
ns1.york.ac.uk
ns0.york.ac.uk
auth1.dns.cam.ac.uk
ns2.york.ac.uk
SPF Record
✓ Strict (-all)
v=spf1 include:_spf.york.ac.uk include:_spf.google.com -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; sp=reject; adkim=s; aspf=r; rua=mailto:[email protected];
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Strict
📧 Reports → mailto:[email protected]
↳ Subdomain policy: reject
DKIM Selectors
✓ 4 found
selector1._domainkey
selector2._domainkey
s1._domainkey
s2._domainkey
✓ Public key: 216 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
8 records- formstack-domain-verification=8f07a12621b9628970ca76f97743e294
- docusign=8c1666ac-2f3e-49a1-b455-3fb0562e3377
- twilio-domain-verification=1395e7d15ae1fac1a10b8a7b0ad5e66e
- mandrill_verify.3Ru1mvZzZJy5d2dGlzkKaQ
- atlassian-domain-verification=Yhq9OnKNxMwugKi1gcSWjAn1xqUW9Ig4EjWsmd0f/xoTFwDaWmLoQpZ3Z0YKi1zw
- docusign=c0054eaa-6b73-4bb8-9567-7332f1413427
- 9j7dn62br4c9bj3rc1ug6mal1q
- SPFv=spf1 include:_spf.york.ac.uk include:_spf.google.com -all
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