Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
crk.umn.edu
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-26 20:06:22 UTC · ↺ Refresh
MX Hostnames
- mx-wb.umn.edu
- mx-eb.umn.edu
MX Priorities
- mx-wb.umn.edu: 10
- mx-eb.umn.edu: 10
A / AAAA Records
- 104.18.20.11
- 104.18.21.11
- 2606:4700::6812:140b
- 2606:4700::6812:150b
Mail Server IPs
- 134.84.196.211 ↩ mta-p11.oit.umn.edu
- 134.84.196.209 ↩ mta-p9.oit.umn.edu
- 134.84.196.215 ↩ mta-p15.oit.umn.edu
- 134.84.196.213 ↩ mta-p13.oit.umn.edu
- 134.84.196.217 ↩ mta-p17.oit.umn.edu
- 134.84.196.212 ↩ mta-p12.oit.umn.edu
- 134.84.196.214 ↩ mta-p14.oit.umn.edu
- 134.84.196.216 ↩ mta-p16.oit.umn.edu
- 134.84.196.218 ↩ mta-p18.oit.umn.edu
- 134.84.196.210 ↩ mta-p10.oit.umn.edu
SOA Record
Raw SOA
ns-3.umn.edu hostmaster.umn.edu 41854 10800 3600 2592000 900
Primary NS (mname)
ns-3.umn.edu
Admin Email (rname)
hostmaster@umn.edu
Serial
41854
Refresh
10800s
Retry
3600s
Expire
2592000s
Minimum TTL
900s
Nameservers (NS)
ns-3.umn.edu
ns-2.umn.edu
ns-1.umn.edu
SPF Record
✓ Soft Fail (~all)
v=spf1 include:_spf.google.com include:servers.mcsv.net redirect=_spf.umn.edu
📊 DNS lookups: 3/10
DMARC Record
✓ Reject
v=DMARC1; p=reject; pct=100; rua=mailto:[email protected]; ruf=mailto:[email protected]
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 2 found
google._domainkey
k1._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
3 records- SFMC-hlrNdM1ZWAKRo2z1DO-fTQO7YK74I0p0Y8cBi5kn
- SPFv=spf1 include:_spf.google.com include:servers.mcsv.net redirect=_spf.umn.edu
- MS=3021A41F82D6CF5FD31FDC87B8DCCA64F7E041FE
Free · No signup required
Add email validation to your forms
Block disposable emails, validate MX records, detect role accounts — unlimited, forever free.
<script src="https://check.verifyswift.com/"></script>
One line of code · Works on any site
See demo & docs
Deep verification
Full email verification for crk.umn.edu
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits