Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
css.edu
Yes
✓ Yes
Google
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-20 23:21:45 UTC · ↺ Refresh
MX Hostnames
- alt3.aspmx.l.google.com
- alt2.aspmx.l.google.com
- alt1.aspmx.l.google.com
- aspmx.l.google.com
- alt4.aspmx.l.google.com
MX Priorities
- alt1.aspmx.l.google.com: 5
- alt2.aspmx.l.google.com: 5
- alt3.aspmx.l.google.com: 10
- alt4.aspmx.l.google.com: 10
- aspmx.l.google.com: 1
A / AAAA Records
- 143.110.5.51
Mail Server IPs
- 108.177.123.26 ↩ lcscld-in-f26.1e100.net
- 2800:3f0:4003:c0f::1a (no PTR)
- 172.253.116.26 ↩ dj-in-f26.1e100.net
- 2a00:1450:400b:c02::1a ↩ dj-in-f26.1e100.net
- 192.178.223.26 ↩ yulhrs-in-f26.1e100.net
- 2a00:1450:4009:c0f::1b ↩ yulhrs-in-f27.1e100.net
- 173.194.76.27 ↩ ws-in-f27.1e100.net
- 2a00:1450:400c:c00::1a ↩ ws-in-f26.1e100.net
- 172.253.63.27 ↩ bi-in-f27.1e100.net
- 2607:f8b0:4004:c1d::1a ↩ ww-in-f26.1e100.net
SOA Record
Raw SOA
ns1-06.azure-dns.com root.css1.css.edu 2023042601 10800 3600 1209600 3600
Primary NS (mname)
ns1-06.azure-dns.com
Admin Email (rname)
root@css1.css.edu
Serial
2023042601
Refresh
10800s
Retry
3600s
Expire
1209600s
Minimum TTL
3600s
Nameservers (NS)
ns1-06.azure-dns.com
ns2-06.azure-dns.net
ns3-06.azure-dns.org
ns4-06.azure-dns.info
SPF Record
✓ Soft Fail (~all)
v=spf1 redirect=css.edu.hosted.spf-report.com
📊 DNS lookups: 1/10
DMARC Record
✓ Reject
v=DMARC1; p=reject; sp=none; rua=mailto:[email protected],mailto:[email protected],mailto:[email protected]; ruf=mailto:[email protected],mailto:[email protected]; pct=100
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected],mailto:[email protected],mailto:[email protected]
↳ Subdomain policy: none
DKIM Selectors
✓ 3 found
google._domainkey
s1._domainkey
s2._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: google
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
5 records- SVHHOLU7BTCE5XGCALF5WK7DJYYPFJKEAZUBZCGNG
- google-site-verification=SG1JowdK2mGboFwbZj1futVIQ45Zf_HIWgARunFi8Vc
- SPFv=spf1 redirect=css.edu.hosted.spf-report.com
- google-site-verification=RuGerdp05Zypy5cD_gYjwuFyc-MLhvKher_fQNJ9iZo
- jamf-site-verification=5_KGMyqNryCvx6Xz0ndjVg
Full email verification for css.edu
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