Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
prestone.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-28 06:39:58 UTC · ↺ Refresh
MX Hostnames
- prestone-com.mail.protection.outlook.com
MX Priorities
- prestone-com.mail.protection.outlook.com: 10
A / AAAA Records
- 141.193.213.10 (no PTR)
- 141.193.213.11 (no PTR)
Mail Server IPs
- 52.101.190.0 ↩ mail-yt5pr01cu00100.inbound.protection.outlook.com
- 52.101.192.1 ↩ mail-yqzpr01cu01001.inbound.protection.outlook.com
- 52.101.190.2 ↩ mail-yt3pr01cu00602.inbound.protection.outlook.com
- 52.101.190.1 ↩ mail-yt3pr01cu00701.inbound.protection.outlook.com
- 2a01:111:f403:c942:: ↩ mail-yt5pr01cu00100.inbound.protection.outlook.com
- 2a01:111:f403:c942::1 ↩ mail-yt3pr01cu00701.inbound.protection.outlook.com
- 2a01:111:f403:c942::2 ↩ mail-yt3pr01cu00602.inbound.protection.outlook.com
- 2a01:111:f403:c944::1 ↩ mail-yqzpr01cu01001.inbound.protection.outlook.com
SOA Record
Raw SOA
ns1.markmonitor.com hostmaster.markmonitor.com 2025122301 86400 3600 2592000 172800
Primary NS (mname)
ns1.markmonitor.com
Admin Email (rname)
hostmaster@markmonitor.com
Serial
2025122301
Refresh
86400s
Retry
3600s
Expire
2592000s
Minimum TTL
172800s
Nameservers (NS)
ns7.markmonitor.com
ns1.markmonitor.com
ns2.markmonitor.com
ns3.markmonitor.com
ns4.markmonitor.com
ns5.markmonitor.com
ns6.markmonitor.com
SPF Record
✓ Soft Fail (~all)
v=spf1 a ip4:184.94.104.192/26 ip4:12.190.13.22 ip4:67.202.192.219 ip4:13.82.51.121 ip4:141.193.213.10 ip4:141.193.213.11 include:spf.protection.outlook.com include:relay.mailchannels.net include:_extblocks1.prestone.com ~all
📊 DNS lookups: 4/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; pct=50; fo=1; rua=mailto:[email protected]; ruf=mailto:[email protected]
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
⚠ Policy applies to 50% of failing messages only
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
9 records- _io7s24vgeslfrs0w7osv9s04qzk181k
- 2oeTkAnHiOPPggYI71uUxlpU4Mtm7mRlVXoTUc+DbW7sJXI41DwGUge3PPlW1CLuCWtBQeKUaheLN3gHyQEKpw==
- SPFv=spf1 a ip4:184.94.104.192/26 ip4:12.190.13.22 ip4:67.202.192.219 ip4:13.82.51.121 ip4:141.193.213.10 ip4:141.193.213.11 include:spf.protection.outlook.com include:relay.mailchannels.net include:_extblocks1.prestone.com ~all
- _c37z2w1tvuz32p8t15tf3sf1uwd15jl
- MS=ms70541453
- knowbe4-site-verification=6865c506fd766bd3a331f7f3df724552
- F4aGksUSsz6rb4NzlC3kfLA944EEKkecLUt8wks20UOyQxwQVvFryzn5+ydzwdz1ALy9Mpoj8JXEp4Grv4Ld/w==
- _s8nx8n8qci6vij9v4axoswpcsisfcbx
- 4c793e6d36be81db6f1e252ab15f91aef7748ec3c19786b3a73f090d074cd8d6
Full email verification for prestone.com
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