circular-carbon.com

Valid Email Server
Domain Lookup › circular-carbon.com
Live data — DNS records and disposable check were just fetched and saved.

Domain Overview

DNS: ⚡ live Checker: ⚡ live
circular-carbon.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-07-01 16:03:39 UTC · ↺ Refresh

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MX Hostnames

  • circularcarbon-com02b.mail.protection.outlook.com

MX Priorities

  • circularcarbon-com02b.mail.protection.outlook.com: 10

A / AAAA Records

  • 217.160.0.37 ↩ 217-160-0-37.elastic-ssl.ui-r.com
  • 2001:8d8:100f:f000::200 ↩ 2001-08d8-100f-f000-0000-0000-0000-0200.elastic-ssl.ui-r.com

Mail Server IPs

  • 52.101.170.1 ↩ mail-fr4p281cu03101.inbound.protection.outlook.com
  • 52.101.170.0 ↩ mail-fr5p281cu00500.inbound.protection.outlook.com
  • 52.101.168.0 ↩ mail-beup281cu00100.inbound.protection.outlook.com
  • 52.101.170.2 ↩ mail-fr6p281cu00202.inbound.protection.outlook.com
  • 2a01:111:f403:ca2d::1 ↩ mail-fr4p281cu03101.inbound.protection.outlook.com
  • 2a01:111:f403:ca2d:: ↩ mail-fr5p281cu00500.inbound.protection.outlook.com
  • 2a01:111:f403:ca27:: ↩ mail-beup281cu00100.inbound.protection.outlook.com
  • 2a01:111:f403:ca2d::2 ↩ mail-fr6p281cu00202.inbound.protection.outlook.com

SOA Record

Raw SOA ns1125.ui-dns.de hostmaster.1und1.com 2017060146 28800 7200 604800 600
Primary NS (mname)
ns1125.ui-dns.de
Admin Email (rname)
hostmaster@1und1.com
Serial
2017060146
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
600s

Nameservers (NS)

ns1125.ui-dns.de
ns1076.ui-dns.com
ns1113.ui-dns.org
ns1061.ui-dns.biz

SPF Record

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

DMARC Record

✓ Reject
v=DMARC1;p=reject;
✓ Reject — strongest protection
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)

DKIM Selectors

✗ None detected

No DKIM records found for common selectors — your provider may use a custom selector name.

Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses

All TXT Records

6 records
  • apple-domain-verification=mthj3PYYsGL3hLw4
  • asv=4595c5104d4e645f021ec0007ff411e3
  • MS=1ADD9AD8802A44AAADB6F1957E93CE8477C7
  • MS=ms58546622
  • SPFv=spf1 include:spf.protection.outlook.com -all
  • google-site-verification=VGIC9o57wEwSyH2OCdKMrcfGlJef29npVnWNCwhvYuY
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