Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
kostelanetz.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-04-04 09:03:34 UTC · ↺ Refresh
MX Hostnames
- kostelanetz-com.mail.protection.outlook.com
MX Priorities
- kostelanetz-com.mail.protection.outlook.com: 0
A / AAAA Records
- 199.60.103.82 (no PTR)
- 199.60.103.182 (no PTR)
Mail Server IPs
- 52.101.40.24 ↩ mail-cy5pr05cu00100.inbound.protection.outlook.com
- 52.101.10.10 ↩ mail-bn8pr05cu00102.inbound.protection.outlook.com
- 52.101.42.14 ↩ mail-mw2pr04cu00106.inbound.protection.outlook.com
- 52.101.8.46 ↩ mail-dm6pr05cu00406.inbound.protection.outlook.com
- 2a01:111:f403:c92c::2 ↩ mail-dm2pr04cu00102.inbound.protection.outlook.com
- 2a01:111:f403:f908::2 ↩ mail-bn8pr05cu00102.inbound.protection.outlook.com
- 2a01:111:f403:f90b:: ↩ mail-bn6pr04cu00100.inbound.protection.outlook.com
- 2a01:111:f403:c801::1 ↩ mail-sn1pr0501cu00101.inbound.protection.outlook.com
SOA Record
Raw SOA
chloe.ns.cloudflare.com dns.cloudflare.com 2400061796 10000 2400 604800 1800
Primary NS (mname)
chloe.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2400061796
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
chloe.ns.cloudflare.com
melnicoff.ns.cloudflare.com
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com include:spf.mandrillapp.com include:44234581.spf04.hubspotemail.net -all
📊 DNS lookups: 3/10
✓ 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
✓ 2 found
selector1._domainkey
selector2._domainkey
✓ Public key: 392 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
7 records- linkedin-site-verification=44120503-bf1c-4c19-aa74-5d076bd1206f
- SPFv=spf1 include:spf.protection.outlook.com include:spf.mandrillapp.com include:44234581.spf04.hubspotemail.net -all
- MS=ms23625505
- MS=ms65660536
- _8ovt2qoxwp44bnjspedlw2dlu36x4cn
- cisco-ci-domain-verification=7333d735b38885ceeac5ed235c2b62272899d13f12ccb086966944e70c1e47e1
- knowbe4-site-verification=275a849822a9157be31183550aebc9e1
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