Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
arbnco.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-20 15:17:25 UTC · ↺ Refresh
MX Hostnames
- arbnco-com.mail.protection.outlook.com
MX Priorities
- arbnco-com.mail.protection.outlook.com: 10
A / AAAA Records
- 192.0.78.215 (no PTR)
- 192.0.78.169 (no PTR)
Mail Server IPs
- 52.101.73.24 ↩ mail-as8pr05cu00300.inbound.protection.outlook.com
- 52.101.73.15 ↩ mail-am9pr04cu00107.inbound.protection.outlook.com
- 52.101.68.36 ↩ mail-db5pr02cu00104.inbound.protection.outlook.com
- 52.101.73.153 ↩ mail-as8pr05cu00401.inbound.protection.outlook.com
- 2a01:111:f403:ca04::2 ↩ mail-du2pr03cu00102.inbound.protection.outlook.com
- 2a01:111:f403:ca04::b ↩ mail-dbbpr03cu00103.inbound.protection.outlook.com
- 2a01:111:f403:ca09::4 ↩ mail-am0pr04cu00504.inbound.protection.outlook.com
- 2a01:111:f403:ca04:: ↩ mail-db3pr0202cu00100.inbound.protection.outlook.com
SOA Record
Raw SOA
dolly.ns.cloudflare.com dns.cloudflare.com 2399427993 10000 2400 604800 1800
Primary NS (mname)
dolly.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2399427993
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
dolly.ns.cloudflare.com
noah.ns.cloudflare.com
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com include:emsd1.com include:sendgrid.net include:3485049.spf01.hubspotemail.net -all
📊 DNS lookups: 4/10
✓ 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
✓ 4 found
selector1._domainkey
selector2._domainkey
s1._domainkey
s2._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
3 records- SPFv=spf1 include:spf.protection.outlook.com include:emsd1.com include:sendgrid.net include:3485049.spf01.hubspotemail.net -all
- v=verifydomain MS=6759428
- atlassian-domain-verification=QG7pYQG4jaBwZ0EEwASSh0x8wOxR5FfywfUrrlCdnGZt8Z/3QvcIzhiOAplassiB
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