Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
kern.org
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-25 22:02:11 UTC · ↺ Refresh
MX Hostnames
- kern-org.mail.protection.outlook.com
MX Priorities
- kern-org.mail.protection.outlook.com: 0
A / AAAA Records
- 206.227.0.87 ↩ www04.kern.org
Mail Server IPs
- 52.101.9.2 ↩ mail-mn2pr02cu00202.inbound.protection.outlook.com
- 52.101.9.26 ↩ mail-bl0pr02cu00702.inbound.protection.outlook.com
- 52.101.10.16 ↩ mail-bn6pr21cu00500.inbound.protection.outlook.com
- 52.101.41.0 ↩ mail-byapr05cu00400.inbound.protection.outlook.com
- 2a01:111:f403:c91d::a ↩ mail-co1pr21cu00202.inbound.protection.outlook.com
- 2a01:111:f403:c946::2 ↩ mail-ch4pr04cu00102.inbound.protection.outlook.com
- 2a01:111:f403:c902:: ↩ mail-sj2pr05cu00300.inbound.protection.outlook.com
- 2a01:111:f403:c922::1 ↩ mail-bl0pr05cu00501.inbound.protection.outlook.com
SOA Record
Raw SOA
ns1.kern.org dnsmgr.kern.org 2018030200 10800 3600 1209600 50400
Primary NS (mname)
ns1.kern.org
Admin Email (rname)
dnsmgr@kern.org
Serial
2018030200
Refresh
10800s
Retry
3600s
Expire
1209600s
Minimum TTL
50400s
Nameservers (NS)
ns2.kern.org
ns1.kern.org
SPF Record
✓ Strict (-all)
v=spf1 ip4:206.227.0.0/24 ip4:206.227.2.0/24 ip4:198.137.0.0/24 include:spf.protection.outlook.com include:spf1.kern.org include:spf.US.exclaimer.net -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; rua=mailto:[email protected]; ruf=mailto:[email protected]; ri=3600;
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 4 found
selector1._domainkey
selector2._domainkey
s1._domainkey
s2._domainkey
✓ Public key: 216 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
5 records- IN4cfJM/XhFg4lW1GYcg7KqWSsJ4/3qWj9sTwmWI2ugAYyUJdhz/0xazpDlOlSt5/6X3C2e1UpwHnhkZ2hRiTQ==
- atlassian-domain-verification=7q7NtdJBpBjHwmKYjYGsbDhzVeUcXbZhUazzqqKVT1MB8Q6BXaFAajaBJo4nRF6M
- SPFv=spf1 ip4:206.227.0.0/24 ip4:206.227.2.0/24 ip4:198.137.0.0/24 include:spf.protection.outlook.com include:spf1.kern.org include:spf.US.exclaimer.net -all
- adobe-idp-site-verification=d3287c280efda336f602ff3cb5db2a72fb4789ef6618615033f059f3ee141de7
- apple-domain-verification=30RflCT8N15CGQUQ
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