Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
columbus.k12.nc.us
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-29 18:56:40 UTC · ↺ Refresh
MX Hostnames
- columbus-k12-nc-us.mail.protection.outlook.com
MX Priorities
- columbus-k12-nc-us.mail.protection.outlook.com: 10
A / AAAA Records
- 34.238.178.141 ↩ ec2-34-238-178-141.compute-1.amazonaws.com
Mail Server IPs
- 52.101.194.17 ↩ mail-ch5pr02cu00401.inbound.protection.outlook.com
- 40.93.192.4 ↩ mail-dm2pr04cu00404.inbound.protection.outlook.com
- 52.101.9.17 (no PTR)
- 52.101.9.12 ↩ mail-bl0pr05cu00504.inbound.protection.outlook.com
- 2a01:111:f403:f902::2 ↩ mail-mn2pr02cu00202.inbound.protection.outlook.com
- 2a01:111:f403:f802::3 ↩ mail-sj0pr03cu01403.inbound.protection.outlook.com
- 2a01:111:f403:c902::2 ↩ mail-sj0pr03cu01602.inbound.protection.outlook.com
- 2a01:111:f403:c901::1 ↩ mail-bl2pr04cu00201.inbound.protection.outlook.com
SOA Record
Raw SOA
ns-01.mcnc.org hostmaster.ncren.net 2025120301 14400 7200 1209600 14400
Primary NS (mname)
ns-01.mcnc.org
Admin Email (rname)
hostmaster@ncren.net
Serial
2025120301
Refresh
14400s
Retry
7200s
Expire
1209600s
Minimum TTL
14400s
Nameservers (NS)
ns-02.mcnc.org
ns-01.mcnc.org
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com include:customerspf.schoolmessenger.com -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; pct=100; rua=mailto:[email protected],[email protected]; ruf=mailto:[email protected]; sp=none; aspf=r;
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected],[email protected]
↳ Subdomain policy: none
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._domainkey
✓ DKIM properly configured for selector: selector1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
7 records- google-site-verification=aheLHv7uXxJ_jfJHfDrbtTnalUGx6KWN6LMghLBRGPA
- adobe-idp-site-verification=fec8d1a2c482544888576ce04640e406c296aab782aa828fec62501b64249d64
- MS=ms30698880
- openai-domain-verification=dv-c6rJ8zsNqq2JPT30Zku1Urv4
- ms30698880.msv1.invalid.outlook.com
- SPFv=spf1 include:spf.protection.outlook.com include:customerspf.schoolmessenger.com -all
- google-site-verification=0in-58yfnGgyg8OZAYf2moHTlKe5wG_SUQGV6DX2yUk
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