cta-r.com

Valid Email Server
Domain Lookup › cta-r.com

Domain Overview

DNS: ✓ just now Checker: ✓ just now
cta-r.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]

Checked via [email protected] · 2026-09-23 09:55:24 UTC · ↺ Refresh

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MX Hostnames

  • ctar-com0i.mail.protection.outlook.com

MX Priorities

  • ctar-com0i.mail.protection.outlook.com: 10

A / AAAA Records

  • 217.160.0.84 ↩ 217-160-0-84.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

  • 52.101.185.21 ↩ mail-zrxpr05cu00105.inbound.protection.outlook.com
  • 52.101.68.8 ↩ mail-du0pr03cu00100.inbound.protection.outlook.com
  • 52.101.181.153 ↩ mail-wa4pr04cu00101.inbound.protection.outlook.com
  • 52.101.73.145 ↩ mail-am6pr02cu00301.inbound.protection.outlook.com
  • 2a01:111:f403:c967::8 ↩ mail-cpjpr04cu00100.inbound.protection.outlook.com
  • 2a01:111:f403:ca09::28 ↩ mail-am6pr02cu00300.inbound.protection.outlook.com
  • 2a01:111:f403:ca04::4 ↩ mail-db4pr02cu00204.inbound.protection.outlook.com
  • 2a01:111:f403:ca09::26 ↩ mail-am8pr83cu00106.inbound.protection.outlook.com

SOA Record

Raw SOA ns1029.ui-dns.org hostmaster.1und1.com 2017060149 28800 7200 604800 600
Primary NS (mname)
ns1029.ui-dns.org
Admin Email (rname)
hostmaster@1und1.com
Serial
2017060149
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
600s

Nameservers (NS)

ns1029.ui-dns.org
ns1029.ui-dns.com
ns1051.ui-dns.de
ns1085.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

~ Quarantine
v=DMARC1; p=quarantine; adkim=s; aspf=s
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Strict · DKIM alignment: Strict
⚠ No aggregate reports (rua= not set)

DKIM Selectors

✓ 1 found
default._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: default

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

All TXT Records

3 records
  • MS=9DCCF528BB6F7C9326AB2782AFAE45FC3453B3EF
  • SPFv=spf1 include:spf.protection.outlook.com -all
  • MS=ms61702213
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