Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
columbiacentral.edu
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-24 01:00:46 UTC · ↺ Refresh
MX Hostnames
- columbiacentral-edu.mail.protection.outlook.com
MX Priorities
- columbiacentral-edu.mail.protection.outlook.com: 0
A / AAAA Records
- 104.18.3.182 (no PTR)
- 104.18.2.182 (no PTR)
- 2606:4700::6812:3b6
- 2606:4700::6812:2b6
Mail Server IPs
- 52.101.8.34 ↩ mail-dm2pr04cu00102.inbound.protection.outlook.com
- 52.101.194.12 ↩ mail-ch0pr04cu00504.inbound.protection.outlook.com
- 52.101.41.0 ↩ mail-byapr05cu00400.inbound.protection.outlook.com
- 52.101.194.3 ↩ mail-ch1pr04cu00103.inbound.protection.outlook.com
- 2a01:111:f403:c946::4 ↩ mail-ch0pr04cu00504.inbound.protection.outlook.com
- 2a01:111:f403:f908::1 ↩ mail-bn1pr04cu00101.inbound.protection.outlook.com
- 2a01:111:f403:c92c::1 ↩ mail-dm6pr03cu00401.inbound.protection.outlook.com
- 2a01:111:f403:f902::2 ↩ mail-mn2pr02cu00202.inbound.protection.outlook.com
SOA Record
Raw SOA
malavika.ns.cloudflare.com dns.cloudflare.com 2396235518 10000 2400 604800 1800
Primary NS (mname)
malavika.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2396235518
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
malavika.ns.cloudflare.com
tate.ns.cloudflare.com
SPF Record
✓ Soft Fail (~all)
v=spf1 mx a ip4:38.87.238.149 ip4:66.50.187.181 ip4:196.28.63.5 ip4:66.50.9.162 include:spf.protection.outlook.com include:scanscope.net include:1278314a1.spf2.netcorecloud.net include:spf.mandrillapp.com include:xero.columbiacentral.edu ~all
📊 DNS lookups: 7/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; rua=mailto:[email protected],mailto:[email protected],mailto:[email protected]; ruf=mailto:[email protected],mailto:[email protected]; fo=1; pct=100; aspf=s
✓ Reject — strongest protection
📋 SPF alignment: Strict
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected],mailto:[email protected],mailto:[email protected]
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
8 records- upm2gbmg67tn127n7bi8tovi5g
- SPFv=spf1 mx a ip4:38.87.238.149 ip4:66.50.187.181 ip4:196.28.63.5 ip4:66.50.9.162 include:spf.protection.outlook.com include:scanscope.net include:1278314a1.spf2.netcorecloud.net include:spf.mandrillapp.com include:xero.columbiacentral.edu ~all
- vqfhpud3lgonfvf3jlts1popvm
- 8tlpf6me6htnfvm3o71qutkvrd
- MS=ms54700320
- adobe-idp-site-verification=a3772a8d19e0a63e6da531c9ede278bb0e717810a123ea75c30c5be4f7f64615
- cadoc1k3181nd5cbk0onj1si00
- docusign=2840697f-34c2-4b16-b30c-ab1da457c1e3
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 columbiacentral.edu
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits