28721038.dk DNS records

🖥️ Nameservers2 records 38ms

Nameserver	IP addresses	PTR	ASN / ISP
etta.ns.cloudflare.com	108.162.192.156 172.64.32.156 173.245.58.156 2606:4700:50::adf5:3a9c 2803:f800:50::6ca2:c09c 2a06:98c1:50::ac40:209c	etta.ns.cloudflare.com etta.ns.cloudflare.com etta.ns.cloudflare.com etta.ns.cloudflare.com etta.ns.cloudflare.com etta.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
lee.ns.cloudflare.com	108.162.193.129 172.64.33.129 173.245.59.129 2606:4700:58::adf5:3b81 2803:f800:50::6ca2:c181 2a06:98c1:50::ac40:2181	lee.ns.cloudflare.com lee.ns.cloudflare.com lee.ns.cloudflare.com lee.ns.cloudflare.com lee.ns.cloudflare.com lee.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records2 records 59ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.31.235	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.180.192	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records1 records 47ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	300s	28721038-dk.mail.protection.outlook.com	2a01:111:f403:ca04::10 2a01:111:f403:ca04::7 2a01:111:f403:ca09::1 2a01:111:f403:ca09::20 52.101.68.21 52.101.73.22 52.101.73.24 52.101.73.28	mail-dbapr03cu00100.inbound.protection.outlook.com mail-db4pr02cu00307.inbound.protection.outlook.com mail-as9pr07cu00301.inbound.protection.outlook.com mail-as8pr05cu00400.inbound.protection.outlook.com mail-db4pr02cu00205.inbound.protection.outlook.com mail-am7pr05cu00106.inbound.protection.outlook.com mail-as8pr05cu00300.inbound.protection.outlook.com mail-am7pr05cu00204.inbound.protection.outlook.com	AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation

📧 Autodiscover / Autoconfig

Service	CNAME / IP
🔷 Autodiscover	172.67.180.192
🔶 Autoconfig	104.21.31.235

🔷 AAAA Records (IPv6)2 records 39ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3031::6815:1feb	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3036::ac43:b4c0	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records1 records 34ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.31.235,172.67.180.192 ech=AEX+DQBBcQAgACDJl9lxn0G7IScxUot8SjP0dlMi9vqt1K8NUKuQM6CPPgAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3031::6815:1feb,2606:4700:3036::ac43:b4c0

📝 TXT Records2 records 145ms

TXT Record
MS=ms92105549
v=spf1 include:spf.protection.outlook.com -all

✉️ SPF

Policy	Record (28721038.dk)
-all (hard fail)	v=spf1 include:spf.protection.outlook.com -all

📨 DMARC

✗ No DMARC record — mail spoofing not restricted

📬 MTA-STS

✗ No MTA-STS policy — SMTP TLS not enforced

📈 TLSRPT

✗ No TLSRPT record — no SMTP TLS failure reporting

📜 CAA Records

✗ No CAA records — any CA may issue certificates

🔏 ACME Challenge

Type	Name	Value
TXT	_acme-challenge.28721038.dk	qGGCunl1wvW3AMDdCUIgoEImxKj_jUc2JPacEYoqQQg

🔗 TLSA / DANE

✗ No TLSA records — DANE not configured for HTTPS (_443) or MX (_25)

🔐 DNSSEC123ms

Check	Result
Validation Status	🔓 Insecure
AD Flag (resolver validates)	✗ Not set
DS Record	✗ Not found
DNSKEY Record	✗ Not found
Flags	unsigned answer

🏷️ SOA0ms

Field	Value
Serial	2409161626
Primary NS (MNAME)	etta.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration

✗ No registration data — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

38ms

A

59ms

MX

47ms

AAAA

39ms

TXT

145ms

CAA

32ms

HTTPS

34ms

TLSA

142ms

SOA

0ms

MTA-STS

70ms

DNSSEC

123ms

SRV

76ms

Total

1302ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-07-12 18:37:37	1302ms	2 NS 2 A 1 MX	🔓 Insecure	View
2026-06-20 02:49:41	1110ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-16 12:38:53	715ms	2 NS 1 A 1 MX	🔒 Secure	View