Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
ykk.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-24 19:55:14 UTC · ↺ Refresh
MX Hostnames
- ykk-com.mail.protection.outlook.com
MX Priorities
- ykk-com.mail.protection.outlook.com: 0
A / AAAA Records
No A/AAAA records found.
Mail Server IPs
- 52.101.124.6 ↩ mail-tyvp286cu00206.inbound.protection.outlook.com
- 52.101.157.40 ↩ mail-os9p286cu00100.inbound.protection.outlook.com
- 52.101.124.0 ↩ mail-tycp286cu02600.inbound.protection.outlook.com
- 52.101.124.1 ↩ mail-ty3p286cu00101.inbound.protection.outlook.com
- 2a01:111:f403:cc1f:: ↩ mail-os9p286cu00100.inbound.protection.outlook.com
- 2a01:111:f403:cc1a::3 ↩ mail-tyvp286cu00203.inbound.protection.outlook.com
- 2a01:111:f403:cc1a::1 ↩ mail-ty3p286cu00101.inbound.protection.outlook.com
- 2a01:111:f403:cc1f::1 ↩ mail-os0p286cu01201.inbound.protection.outlook.com
SOA Record
Raw SOA
ns000.d-53.net dns-managers.iij.ad.jp 294 3600 600 604800 900
Primary NS (mname)
ns000.d-53.net
Admin Email (rname)
dns-managers@iij.ad.jp
Serial
294
Refresh
3600s
Retry
600s
Expire
604800s
Minimum TTL
900s
Nameservers (NS)
ns016-f2tjvgovcvq0vck1.f.d-53.jp
ns016-f2tjvgovcvq0vck1.f.d-53.org
ns016-f2tjvgovcvq0vck1.f.d-53.info
SPF Record
✓ Strict (-all)
v=spf1 include:_spf1.ykk.com include:_spf2.ykk.com include:spf.protection.outlook.com include:19496050.spf01.hubspotemail.net include:_spf.salesforce.com -all
📊 DNS lookups: 5/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; fo=1; rua=mailto:[email protected];
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 5 found
selector1._domainkey
selector2._domainkey
mail._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
7 records- have-i-been-pwned-verification=dweb_4iaxaj42gdirong2bd0ab9ks
- sending_domain1008842=5f73439148118b1ec942af07b7e67be479b46079fbad25ba6780602493118156
- adobe-idp-site-verification=c8dc2b56108e48e70a704915acee196918ba82e233a4834a66cd3aba1ef4c90c
- SPFv=spf1 include:_spf1.ykk.com include:_spf2.ykk.com include:spf.protection.outlook.com include:19496050.spf01.hubspotemail.net include:_spf.salesforce.com -all
- V6Y0CJLSD8JWLXBO39Y0PD6V4CRTNC2X393H2HFH
- amazonses:d9STiPnzfYmHCWog4+kswa+JZCEVPbS6p/8gKH9yL7M=
- knowbe4-site-verification=714450145847bd08a6242057c99678a9
Full email verification for ykk.com
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