gustan.dk DNS records

🖥️ Nameservers2 records 126ms

Nameserver	IP addresses	PTR	ASN / ISP
coco.ns.cloudflare.com	108.162.192.104 172.64.32.104 173.245.58.104 2606:4700:50::adf5:3a68 2803:f800:50::6ca2:c068 2a06:98c1:50::ac40:2068	coco.ns.cloudflare.com coco.ns.cloudflare.com coco.ns.cloudflare.com coco.ns.cloudflare.com coco.ns.cloudflare.com coco.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
terry.ns.cloudflare.com	108.162.193.237 172.64.33.237 173.245.59.237 2606:4700:58::adf5:3bed 2803:f800:50::6ca2:c1ed 2a06:98c1:50::ac40:21ed	terry.ns.cloudflare.com terry.ns.cloudflare.com terry.ns.cloudflare.com terry.ns.cloudflare.com terry.ns.cloudflare.com terry.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records

🌍

No A records found

📧 MX Records1 records 119ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	gustan-dk.mail.protection.outlook.com	2a01:111:f403:ca04::8 2a01:111:f403:ca09::24 2a01:111:f403:ca09::26 2a01:111:f403:ca09::6 52.101.68.29 52.101.68.5 52.101.73.153 52.101.73.2	mail-db5pr02cu00100.inbound.protection.outlook.com mail-am6pr02cu00204.inbound.protection.outlook.com mail-am8pr83cu00106.inbound.protection.outlook.com mail-am4pr0401cu00106.inbound.protection.outlook.com mail-dbapr03cu00105.inbound.protection.outlook.com mail-du2pr03cu00105.inbound.protection.outlook.com mail-as8pr05cu00401.inbound.protection.outlook.com mail-as9pr07cu00302.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	autodiscover.outlook.com → 40.104.116.40

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records1 records 308ms

Service	Priority	Weight	Port	Target
_sipfederationtls._tcp	100	1	5061	sipfed.online.lync.com

📝 TXT Records2 records 490ms

TXT Record
MS=ms99493345
v=spf1 include:spf.protection.outlook.com -all

✉️ SPF

Policy	Record (gustan.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.gustan.dk	h97wUsEizFU_4zVElNnPtSsYhujm69g_qCDUb3vPB5A
TXT	_acme-challenge.gustan.dk	s_wcJuxKUwYdVLd9aJ8d6PKGMEHFN1v8Qvs86vH3sU0

🔗 TLSA / DANE

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

🔐 DNSSEC327ms

Check	Result
Validation Status	🔓 Insecure
AD Flag (resolver validates)	✗ Not set
DS Record	✗ Not found
DNSKEY Record	✗ Not found
Flags	resolution failed: ncache nxrrset

🏷️ SOA0ms

Field	Value
Serial	2413532542
Primary NS (MNAME)	coco.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

126ms

A

138ms

MX

119ms

AAAA

99ms

TXT

490ms

CAA

103ms

HTTPS

138ms

TLSA

819ms

SOA

0ms

MTA-STS

215ms

DNSSEC

327ms

SRV

308ms

Total

2863ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-30 19:11:41	2863ms	2 NS 0 A 1 MX	🔓 Insecure	View
2026-08-28 06:19:26	2726ms	2 NS 0 A 1 MX	🔓 Insecure	View
2026-08-14 00:05:37	5944ms	2 NS 0 A 1 MX	🔓 Insecure	View
2026-06-27 03:27:12	2404ms	2 NS 0 A 1 MX	🔓 Insecure	View
2026-06-24 13:05:56	1045ms	2 NS 0 A 1 MX	🔓 Insecure	View
2026-06-17 10:11:08	2769ms	2 NS 0 A 1 MX	🔓 Insecure	View