Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
crs.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-29 19:42:06 UTC · ↺ Refresh
MX Hostnames
- crs-com.mail.protection.outlook.com
MX Priorities
- crs-com.mail.protection.outlook.com: 10
A / AAAA Records
- 13.67.134.161 (no PTR)
Mail Server IPs
- 52.101.9.26 ↩ mail-bl0pr02cu00702.inbound.protection.outlook.com
- 52.101.11.13 ↩ mail-sn1pr0501cu00205.inbound.protection.outlook.com
- 52.101.41.3 ↩ mail-sj2pr05cu00103.inbound.protection.outlook.com
- 52.101.8.34 ↩ mail-dm2pr04cu00102.inbound.protection.outlook.com
- 2a01:111:f403:c91d:: ↩ mail-mw2pr04cu00100.inbound.protection.outlook.com
- 2a01:111:f403:f913:: ↩ mail-cy1pr03cu00100.inbound.protection.outlook.com
- 2a01:111:f403:c931::1 ↩ mail-sa9pr03cu00201.inbound.protection.outlook.com
- 2a01:111:f403:c92c::3 ↩ mail-dm5pr04cu00103.inbound.protection.outlook.com
SOA Record
Raw SOA
ns25.worldnic.com namehost.worldnic.com 125093013 10800 3600 604800 3600
Primary NS (mname)
ns25.worldnic.com
Admin Email (rname)
namehost@worldnic.com
Serial
125093013
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
3600s
Nameservers (NS)
ns25.worldnic.com
ns26.worldnic.com
SPF Record
✓ Soft Fail (~all)
v=spf1 mx a include:spf.protection.outlook.com include:docebosaas.com include:_spf.elasticemail.com include:msgfocus.com ip4:69.25.30.155 ~all
📊 DNS lookups: 6/10
~ Soft fail (~all) — moderate 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
✓ 4 found
selector1._domainkey
selector2._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
9 records- 0mwr0yzwkzp80rkqpzjwwt1f0tsvghx6
- SPFv=spf1 mx a include:spf.protection.outlook.com include:docebosaas.com include:_spf.elasticemail.com include:msgfocus.com ip4:69.25.30.155 ~all
- pqy8fxhqmzbmjytp9wx92t3282cvz2tv
- amazonses:7lx092pJ9lazz6dSGOdWXV8qKSzG8W04rXdtKJMdgos=
- d365mktkey=D3TxAU4hnxyBUCQdo7XlgspVzXxznhHZxO8iTNTpXpYx
- atlassian-domain-verification=chNan8C07WBzlGxjWv5ro3g56rtn132XJWxOEQZ4/53FKrr94fFtc/ZRuaeUnAdT
- msfpkey=6tuw38v8ew9c43p7geq24n1bf
- google-site-verification=IygVrzl0AYRC4QQvXkwSnk051sZdQUknjHaxtF0Q_Wk
- google-site-verification=lo-O058Pr0fzVAiRMjngITPzGpMLFkmv7OxWT1WaC4Q
Full email verification for crs.com
Run SMTP check, SPF/DKIM/DMARC and catch-all detection.
SPF / DKIM / DMARC Get 1,000 Free Credits