kurtz-bros.com

Valid Email Server
Domain Lookup › kurtz-bros.com

Domain Overview

DNS: ✓ just now Checker: ✓ just now
kurtz-bros.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-06-03 11:44:52 UTC · ↺ Refresh

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MX Hostnames

  • kurtzbros-com01c.mail.protection.outlook.com

MX Priorities

  • kurtzbros-com01c.mail.protection.outlook.com: 0

A / AAAA Records

  • 104.21.42.175 (no PTR)
  • 172.67.206.210 (no PTR)
  • 2606:4700:3030::ac43:ced2
  • 2606:4700:3030::6815:2aaf

Mail Server IPs

  • 52.101.8.42 ↩ mail-dm6pr03cu00402.inbound.protection.outlook.com
  • 52.101.10.16 ↩ mail-bn6pr21cu00500.inbound.protection.outlook.com
  • 52.101.194.0 ↩ mail-ch5pr02cu00200.inbound.protection.outlook.com
  • 52.101.11.13 ↩ mail-sn1pr0501cu00205.inbound.protection.outlook.com
  • 2a01:111:f403:c936:: ↩ mail-cy1pr05cu00400.inbound.protection.outlook.com
  • 2a01:111:f403:c902:: ↩ mail-sj2pr05cu00300.inbound.protection.outlook.com
  • 2a01:111:f403:f802::2 ↩ mail-sj2pr05cu00202.inbound.protection.outlook.com
  • 2a01:111:f403:c946::4 ↩ mail-ch0pr04cu00504.inbound.protection.outlook.com

SOA Record

Raw SOA carioca.ns.cloudflare.com dns.cloudflare.com 2404898823 10000 2400 604800 1800
Primary NS (mname)
carioca.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2404898823
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s

Nameservers (NS)

nick.ns.cloudflare.com
carioca.ns.cloudflare.com

SPF Record

✓ Strict (-all)
v=spf1 ip4:208.40.73.18 ip4:24.142.146.10 include:spf.protection.outlook.com include:4628389.spf04.hubspotemail.net include:_spf.bigcommerce.com -all
📊 DNS lookups: 3/10
✓ 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

✗ 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

7 records
  • klaviyo-site-verification=WzhDZF
  • ptqpv9ladlkso636g5ka1qhkrm
  • SPFv=spf1 ip4:208.40.73.18 ip4:24.142.146.10 include:spf.protection.outlook.com include:4628389.spf04.hubspotemail.net include:_spf.bigcommerce.com -all
  • 927bj7aifn8q286pokm65hu1o3
  • cqk5dftpv6p2jjprrdv5ksfk8q
  • facebook-domain-verification=eez742dgl8l1fm6o4bxghz12r3vbfk
  • google-site-verification=wlErQY07Rcx-ff8RccGXxpScrYCoUwiZe-2eEVa3Orc
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