Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
1917cpa.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-04-02 10:00:45 UTC · ↺ Refresh
MX Hostnames
- 1917cpa-com.mail.protection.outlook.com
MX Priorities
- 1917cpa-com.mail.protection.outlook.com: 0
A / AAAA Records
- 104.21.76.177 (no PTR)
- 172.67.198.99 (no PTR)
- 2606:4700:3032::ac43:c663
- 2606:4700:3030::6815:4cb1
Mail Server IPs
- 52.101.190.1 ↩ mail-yt3pr01cu00701.inbound.protection.outlook.com
- 52.101.190.0 ↩ mail-yt5pr01cu00100.inbound.protection.outlook.com
- 52.101.190.3 ↩ mail-yt6pr01cu00103.inbound.protection.outlook.com
- 52.101.192.0 ↩ mail-yqzpr01cu00900.inbound.protection.outlook.com
- 2a01:111:f403:c944:: ↩ mail-yqzpr01cu00900.inbound.protection.outlook.com
- 2a01:111:f403:c942::3 ↩ mail-yt6pr01cu00103.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
SOA Record
Raw SOA
crystal.ns.cloudflare.com dns.cloudflare.com 2400409602 10000 2400 604800 1800
Primary NS (mname)
crystal.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2400409602
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
crystal.ns.cloudflare.com
ivan.ns.cloudflare.com
SPF Record
✓ Strict (-all)
v=spf1 +a +mx +ip4:192.81.170.18 +include:spf.protection.outlook.com -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none;
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
DKIM Selectors
✓ 1 found
default._domainkey
✓ Public key: 237 chars (valid)
✓ DKIM properly configured for selector: default
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
2 records- SPFv=spf1 +a +mx +ip4:192.81.170.18 +include:spf.protection.outlook.com -all
- cf0yc8qgj2qfc17ngzrbdx2qrctynt25
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