ckb.co.jp

Valid Email Server
Domain Lookup › ckb.co.jp

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
ckb.co.jp
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]

Checked via [email protected] · 2026-03-26 06:50:13 UTC · ↺ Refresh

MX Hostnames

  • ckb-co-jp.mail.eo.outlook.com

MX Priorities

  • ckb-co-jp.mail.eo.outlook.com: 10

A / AAAA Records

  • 153.125.225.146 (no PTR)

Mail Server IPs

  • 52.101.124.0 ↩ mail-tycp286cu02600.inbound.protection.outlook.com
  • 52.101.124.5 ↩ mail-tyvp286cu00305.inbound.protection.outlook.com
  • 52.101.124.6 ↩ mail-tyvp286cu00206.inbound.protection.outlook.com
  • 52.101.157.11 ↩ mail-os0p286cu01203.inbound.protection.outlook.com
  • 2a01:111:f403:cc24:: ↩ mail-os0p286cu01300.inbound.protection.outlook.com
  • 2a01:111:f403:cc1f:: ↩ mail-os9p286cu00100.inbound.protection.outlook.com
  • 2a01:111:f403:cc1a::1 ↩ mail-ty3p286cu00101.inbound.protection.outlook.com
  • 2a01:111:f403:cc1a::2 ↩ mail-tyvp286cu00302.inbound.protection.outlook.com

SOA Record

Raw SOA 01.dnsv.jp hostmaster.dnsv.jp 1746606614 3600 900 604800 300
Primary NS (mname)
01.dnsv.jp
Admin Email (rname)
hostmaster@dnsv.jp
Serial
1746606614
Refresh
3600s
Retry
900s
Expire
604800s
Minimum TTL
300s

Nameservers (NS)

04.dnsv.jp
01.dnsv.jp
02.dnsv.jp
03.dnsv.jp

SPF Record

✓ Soft Fail (~all)
v=spf1 include:spf.protection.outlook.com include:spf.list-finder.jp include:spf.bmv.jp ~all
📊 DNS lookups: 3/10
~ Soft fail (~all) — moderate enforcement

DMARC Record

✗ p=none
v=DMARC1; p=none; rua=mailto:[email protected]
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]

DKIM Selectors

✗ None detected

No DKIM records found for common selectors — your provider may use a custom selector name.

Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses

All TXT Records

6 records
  • SPFv=spf1 include:spf.protection.outlook.com include:spf.list-finder.jp include:spf.bmv.jp ~all
  • _globalsign-domain-verification=QN1dp_CH4jPZLMi8xk8URDl6qdYp_Dq_voVNDX6zNj
  • _globalsign-domain-verification=bMiHv46hSaS6Uyc9MHHykUUhn3V6jbg4Zz995HJ5xe
  • _globalsign-domain-verification=hO7xklFli-Qnu-AlR5ynx1seUYvZqL8i1GlM1Pflyb
  • amazonses:rOhLwhmsgo4TtpmeJAK7rFnqXoPfMfrvnBor7siRZAM=
  • DKIMv=DKIM1; h=sha256; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCpcxGlcxp/jgj9FUjCBuSSPbJFHfGHt3B+e/WRqYeEidXgWJsx1HqcUFV6yLSQKAntWvAeBNJCHeRVYInLs+KtUC1QZfErM1A1+yHjyd/GZkCPSXeBOagwk4w1k3dDF54Gu+vUZ/MNXbYcqRIKVI1ZszHTF1k8n6mrZvW8kLXCmwIDAQAB
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