Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
columbus.k12.oh.us
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-18 03:17:30 UTC · ↺ Refresh
MX Hostnames
- columbus-k12-oh-us.mail.protection.outlook.com
MX Priorities
- columbus-k12-oh-us.mail.protection.outlook.com: 0
A / AAAA Records
- 164.83.111.95 ↩ columbus.k12.oh.us
Mail Server IPs
- 52.101.10.14 ↩ mail-bn6pr04cu00206.inbound.protection.outlook.com
- 52.101.41.26 ↩ mail-sj0pr03cu01702.inbound.protection.outlook.com
- 52.101.41.6 ↩ mail-sj0pr03cu01406.inbound.protection.outlook.com
- 52.101.10.10 ↩ mail-bn8pr05cu00102.inbound.protection.outlook.com
- 2a01:111:f403:f901:: ↩ mail-mn2pr04cu00200.inbound.protection.outlook.com
- 2a01:111:f403:c902::1 ↩ mail-sj2pr05cu00401.inbound.protection.outlook.com
- 2a01:111:f403:c946::7 ↩ mail-ch5pr02cu00307.inbound.protection.outlook.com
- 2a01:111:f403:f908::1 ↩ mail-bn1pr04cu00101.inbound.protection.outlook.com
SOA Record
Raw SOA
coronado.columbus.k12.oh.us tmiller.columbus.k12.oh.us 2019062098 1200 600 1814400 3600
Primary NS (mname)
coronado.columbus.k12.oh.us
Admin Email (rname)
tmiller@columbus.k12.oh.us
Serial
2019062098
Refresh
1200s
Retry
600s
Expire
1814400s
Minimum TTL
3600s
Nameservers (NS)
cortez.columbus.k12.oh.us
coronado.columbus.k12.oh.us
SPF Record
✓ Soft Fail (~all)
v=spf1 include:spf.protection.outlook.com include:_spf4.columbus.k12.oh.us include:spf1.formassembly.com ~all
📊 DNS lookups: 3/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none; rua=mailto:[email protected],mailto:[email protected]; ruf=mailto:[email protected],mailto:[email protected]; fo=1
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → 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
13 records- adobe-idp-site-verification=d92582e0929a3a2ee58ccd8aa4d22389ce88b6f35e67aa98d719bb5a9edf9755
- apple-domain-verification=nv2a0fi3UkLwyfKl
- SPFv=spf1 include:spf.protection.outlook.com include:_spf4.columbus.k12.oh.us include:spf1.formassembly.com ~all
- sending_domain1037863=b584aeb7c589d9cc753e1c4740fd8b67d819e4179b734e37a25c3a995d952c5d
- atlassian-domain-verification=7AXYKX0Ig54T5RKMkFQ6w+0ytgWm0iW530lWTs8VwTBViCBXgxIWlF1caj5JTyp8
- smartsheet-site-validation=CgDI5jUAx1ZEuEWEX75XuxowGzlPS7QT
- pardot1037863=128bcd7c1c28352589812f0e86f95586fb0fa298e2b7f9f818abddf86bc1dac7
- 00DDp000001yToG=1TBUl00000000b7
- google-site-verification=hT4-jzgTOIs9l7r_1f1jmzZKU8O_yhMqGLvaOTCN_nk
- _xlzh7pqy9u0lkgihpyzmnk0305cg1la
- google-site-verification=JGySr1yU0sqoOPQnF2fQyjithzyD_3910u3HBdYk6vA
- google-site-verification=2ivViBgo5Zzg--igwKZrrIkvlG7JMmLffLJPB78-apg
- cisco-ci-domain-verification=4e3dd83f5b86d6207bb8b244034c5e116b41ce02441d49557ed1495aa3786e02
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