circle8services.com

Valid Email Server
Domain Lookup › circle8services.com

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
circle8services.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-23 06:06:50 UTC · ↺ Refresh

MX Hostnames

  • circle8services-com.mail.protection.outlook.com

MX Priorities

  • circle8services-com.mail.protection.outlook.com: 0

A / AAAA Records

  • 198.185.159.144 (no PTR)
  • 198.185.159.145 (no PTR)
  • 198.49.23.144
  • 198.49.23.145

Mail Server IPs

  • 52.101.11.10 ↩ mail-sa9pr03cu00202.inbound.protection.outlook.com
  • 52.101.40.1 ↩ mail-cy4pr03cu00101.inbound.protection.outlook.com
  • 52.101.50.13 ↩ mail-mw2pr02cu00605.inbound.protection.outlook.com
  • 52.101.40.6 ↩ mail-cy1pr03cu00106.inbound.protection.outlook.com
  • 2a01:111:f403:f908:: ↩ mail-bn1pr21cu00100.inbound.protection.outlook.com
  • 2a01:111:f403:c902::4 ↩ mail-sj0pr03cu01504.inbound.protection.outlook.com
  • 2a01:111:f403:f804::2 ↩ mail-co1pr05cu00402.inbound.protection.outlook.com
  • 2a01:111:f403:f902:: ↩ mail-bl2pr04cu00100.inbound.protection.outlook.com

SOA Record

Raw SOA dns1.p01.nsone.net hostmaster.nsone.net 1681497741 43200 7200 1209600 3600
Primary NS (mname)
dns1.p01.nsone.net
Admin Email (rname)
hostmaster@nsone.net
Serial
1681497741
Refresh
43200s
Retry
7200s
Expire
1209600s
Minimum TTL
3600s

Nameservers (NS)

ns03.squarespacedns.com
ns04.squarespacedns.com
ns01.squarespacedns.com
dns4.p01.nsone.net
dns1.p01.nsone.net
dns3.p01.nsone.net
ns02.squarespacedns.com
dns2.p01.nsone.net

SPF Record

✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✗ Missing

No DMARC record — emails cannot be rejected on auth failure.

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

5 records
  • MS=ms77327962
  • MS=ms93272506
  • google-site-verification=CHH-LAm1dd3ArLIMDP-0hvYQv9RkJ1kedIZB2DRcTGM
  • apple-domain-verification=W340c9rPMVpW4AYK
  • SPFv=spf1 include:spf.protection.outlook.com -all
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