Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
castoinfo.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-22 01:58:03 UTC · ↺ Refresh
MX Hostnames
- castoinfo-com.mail.protection.outlook.com
MX Priorities
- castoinfo-com.mail.protection.outlook.com: 10
A / AAAA Records
- 104.21.89.233 (no PTR)
- 172.67.148.235 (no PTR)
- 2606:4700:3033::ac43:94eb
- 2606:4700:3030::6815:59e9
Mail Server IPs
- 52.101.10.1 ↩ mail-bn6pr02cu00301.inbound.protection.outlook.com
- 52.101.9.5 ↩ mail-mn2pr04cu00205.inbound.protection.outlook.com
- 52.101.41.3 ↩ mail-sj2pr05cu00103.inbound.protection.outlook.com
- 52.101.10.16 ↩ mail-bn6pr21cu00500.inbound.protection.outlook.com
- 2a01:111:f403:c801::1 ↩ mail-sn1pr0501cu00101.inbound.protection.outlook.com
- 2a01:111:f403:c802:: ↩ mail-cy4pr03cu00100.inbound.protection.outlook.com
- 2a01:111:f403:c946::5 ↩ mail-ch4pr21cu00105.inbound.protection.outlook.com
- 2a01:111:f403:f90a::1 ↩ mail-bn8pr03cu00201.inbound.protection.outlook.com
SOA Record
Raw SOA
ernest.ns.cloudflare.com dns.cloudflare.com 2398724148 10000 2400 604800 1800
Primary NS (mname)
ernest.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2398724148
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
mira.ns.cloudflare.com
ernest.ns.cloudflare.com
SPF Record
✓ Strict (-all)
v=spf1 a:mail.castoinfo.com ip4:198.54.222.15 ip4:198.54.222.8 ip4:167.99.0.204 include:spf.protection.outlook.com include:spf.emailsignatures365.com include:spf.constantcontact.com include:_spf.elasticemail.com include:spf.nexuspayables.com include:spf.emailrelay.com ip4:168.245.24.156 ip4:167.89.69.24 ip4:167.89.14.11 include:_spf.salesforce.com include:email.freshservice.com -all
📊 DNS lookups: 9/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine;
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._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
13 records- 1vk1tdobekgb2rrit8t5a0gs8m
- 8evk1csh9nlu65p6v9ipfng205
- 9h7dvsgngd20aid7h903snql66
- MS=ms45884077
- XPQfcAf2Ohnc/XaPS3JlVba/eeYx5uYdFMVXdBJcwB9gb2gYdt512IWubWyZkDDiuWdhCTypwJqVLwXCzo6bIA==
- adobe-idp-site-verification=ac3f3f1f31a7e12105e6ec2ebe53dcffbb6309534f54af21b060dc56c4c852f6
- asv=1baf012d2c15678bdf99ffb37b5b3743
- ejl15snke0s5n6k3j9jvuhor73
- google-site-verification=NpaXftb3sjbgmdGcyrT0MKMtER8ShiURbKFPbC9WyLc
- google-site-verification=R-TYVXfFagzcLfFPUfo5ctK2aKbZWFunlG24NUpF7eU
- ir3ckusij5mbcsbsfa1e7aboot
- pu6nncnf0u4q1e8gnb506t9v51
- SPFv=spf1 a:mail.castoinfo.com ip4:198.54.222.15 ip4:198.54.222.8 ip4:167.99.0.204 include:spf.protection.outlook.com include:spf.emailsignatures365.com include:spf.constantcontact.com include:_spf.elasticemail.com include:spf.nexuspayables.com include:spf.emailrelay.com ip4:168.245.24.156 ip4:167.89.69.24 ip4:167.89.14.11 include:_spf.salesforce.com include:email.freshservice.com -all
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