Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
kertos.io
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-23 01:16:50 UTC · ↺ Refresh
MX Hostnames
- kertos-io.mail.protection.outlook.com
MX Priorities
- kertos-io.mail.protection.outlook.com: 10
A / AAAA Records
- 198.202.211.1 (no PTR)
Mail Server IPs
- 52.101.170.1 ↩ mail-fr4p281cu03101.inbound.protection.outlook.com
- 52.101.170.0 ↩ mail-fr5p281cu00500.inbound.protection.outlook.com
- 52.101.168.0 ↩ mail-beup281cu00100.inbound.protection.outlook.com
- 52.101.170.2 ↩ mail-fr6p281cu00202.inbound.protection.outlook.com
- 2a01:111:f403:ca2d::1 ↩ mail-fr4p281cu03101.inbound.protection.outlook.com
- 2a01:111:f403:ca2d::2 ↩ mail-fr6p281cu00202.inbound.protection.outlook.com
- 2a01:111:f403:ca27:: ↩ mail-beup281cu00100.inbound.protection.outlook.com
- 2a01:111:f403:ca2d:: ↩ mail-fr5p281cu00500.inbound.protection.outlook.com
SOA Record
Raw SOA
ns-1276.awsdns-31.org awsdns-hostmaster.amazon.com 1 7200 900 1209600 86400
Primary NS (mname)
ns-1276.awsdns-31.org
Admin Email (rname)
awsdns-hostmaster@amazon.com
Serial
1
Refresh
7200s
Retry
900s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
ns-1640.awsdns-13.co.uk
ns-304.awsdns-38.com
ns-615.awsdns-12.net
ns-1276.awsdns-31.org
SPF Record
✓ Soft Fail (~all)
v=spf1 include:spf.protection.outlook.com include:27065819.spf10.hubspotemail.net ~all
📊 DNS lookups: 2/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✓ Reject
v=DMARC1;p=reject;rua=mailto:[email protected];ruf=mailto:[email protected];fo=1;
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → 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
12 records- SPFv=spf1 include:spf.protection.outlook.com include:27065819.spf10.hubspotemail.net ~all
- anthropic-domain-verification-v553xk=OhqNkdsKZsYMvbV1RYPYoPLOT
- apple-domain-verification=5Y1gNBJ5VjD4lbmy
- atlassian-domain-verification=9sR8yL3uhQkwLXhQaFNSqU0pnWaQdGgOWhf8XZhMZzCHAiEUPg8slAPHvZH/RQ/W
- figma-domain-verification=8d456f80f309d36a9a38fd8f3eeb56194fbedabfc9096f501245dc22408c4cf4-1764675505
- google-site-verification=2IrAG7of5HbnRl2dVtBWh5LWErk-2LW2YOKnkcHPvI8
- google-site-verification=81sk3Q-U1fjnbHmkuWKVzOYbqVjR6WL9ys9BH2dKHtw
- google-site-verification=LzwsJRnA-ME9yATjWqA21t_4Hsx3qqNexzp2fivA7MA
- google-site-verification=vPEruIOABf0TgMJIZUhHWOJQgp-x3cOp6kFdJjj2M18
- notion-domain-verification=iVzpW5FO3RoXjTD1bqpkbqAKvvEDyigo0a6hiQd7K18
- openai-domain-verification=dv-ZHzAq6jntWhy56XNlt0BsASG
- recordMS=ms81671117
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