3f.dk DNS records

🖥️ Nameservers2 records 107ms

Nameserver	IP addresses	PTR	ASN / ISP
lisa.ns.cloudflare.com	108.162.192.131 172.64.32.131 173.245.58.131 2606:4700:50::adf5:3a83 2803:f800:50::6ca2:c083 2a06:98c1:50::ac40:2083	lisa.ns.cloudflare.com lisa.ns.cloudflare.com lisa.ns.cloudflare.com lisa.ns.cloudflare.com lisa.ns.cloudflare.com lisa.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
max.ns.cloudflare.com	108.162.193.132 172.64.33.132 173.245.59.132 2606:4700:58::adf5:3b84 2803:f800:50::6ca2:c184 2a06:98c1:50::ac40:2184	max.ns.cloudflare.com max.ns.cloudflare.com max.ns.cloudflare.com max.ns.cloudflare.com max.ns.cloudflare.com max.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records2 records 82ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
172.66.40.249	300s	—	AS13335	Cloudflare, Inc.	172.66.40.0/21	—	—
172.66.43.7	300s	—	AS13335	Cloudflare, Inc.	172.66.40.0/21	—	—

📧 MX Records1 records 71ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	120s	3f-dk.f-v1.mx.microsoft	2a01:111:f403:ca04::7 2a01:111:f403:ca09:: 2a01:111:f403:ca09::1 2a01:111:f403:ca09::26 52.101.68.18 52.101.68.5 52.101.73.2 52.101.73.28	mail-db4pr02cu00307.inbound.protection.outlook.com mail-am3pr04cu00500.inbound.protection.outlook.com mail-as9pr07cu00301.inbound.protection.outlook.com mail-am8pr83cu00106.inbound.protection.outlook.com mail-db4pr02cu00302.inbound.protection.outlook.com mail-du2pr03cu00105.inbound.protection.outlook.com mail-as9pr07cu00302.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	autodiscover.outlook.com → 40.104.116.8

🔷 AAAA Records (IPv6)2 records 75ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3108::ac42:28f9	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3108:0:0:0:0:0/48	—	—
2606:4700:3108::ac42:2b07	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3108:0:0:0:0:0/48	—	—

🔐 HTTPS Records1 records 82ms

Priority	Target	SvcParams
1 service	.	alpn="h2" ipv4hint=172.66.40.249,172.66.43.7 ipv6hint=2606:4700:3108::ac42:28f9,2606:4700:3108::ac42:2b07

🔌 SRV Records1 records 150ms

Service	Priority	Weight	Port	Target
_sipfederationtls._tcp	0	0	5061	sipfed.online.lync.com

📝 TXT Records10 records 294ms

TXT Record
_kfi60qo31fwon3pfl52rufqghuku2s4
_nn3od9bbc7n791yym1ek0m8rat2giko
9b57k4tmyw99cxyd647lkst0bb5yl9nt
apple-domain-verification=I7NcqCXHmBPnQvA3
facebook-domain-verification=cx1i1lglcowp198g4bgigvaes4baeo
google-site-verification=H1dyJKnjA-UgTyLq-I0XYAE3oTlg-syy-_vdRs7IbnM
google-site-verification=ZT0IrlPw0Or4SHyagAvP5ye8oJGI4c2PPuDBVrluaAo
mindmanager-verification=79b0e23d95d2d253211befb91a68fa41f6edbf5a8bbe869976831f0fddb0cff4
MS=ms12157205
v=spf1 ip4:52.232.5.115 ip4:77.66.57.123 ip4:168.245.61.203 ip4:168.245.67.108 ip4:193.163.134.0/24 ip4:159.183.35.2 include:spf.protection.outlook.com include:dedicated.mysmtp.com include:spf.mph1.com include:spf.hatteland.com -all

✉️ SPF

Policy	Record (3f.dk)
-all (hard fail)	v=spf1 ip4:52.232.5.115 ip4:77.66.57.123 ip4:168.245.61.203 ip4:168.245.67.108 ip4:193.163.134.0/24 ip4:159.183.35.2 include:spf.protection.outlook.com include:dedicated.mysmtp.com include:spf.mph1.com include:spf.hatteland.com -all

📨 DMARC

Policy	Record (_dmarc.3f.dk)
p=reject	v=DMARC1; p=reject; rua=mailto:7lrymkqp@ag.eu.dmarcian.com; ruf=mailto:7lrymkqp@fr.eu.dmarcian.com;

📬 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

🔗 TLSA / DANE4 records 183ms

Service / Owner	Type	Cert association
SMTP _25._tcp.3f-dk.f-v1.mx.microsoft	DANE-EE · SPKI · SHA-256	803F7447CC75B208DBCA042346F5D8DF…
SMTP _25._tcp.3f-dk.f-v1.mx.microsoft	DANE-TA · Full cert · SHA-256	C1AD7778796D20BCA65C889A26550211…
SMTP _25._tcp.3f-dk.f-v1.mx.microsoft	DANE-EE · SPKI · SHA-256	54883CC5F1849331E6BF5002C3129D20…
SMTP _25._tcp.3f-dk.f-v1.mx.microsoft	DANE-TA · Full cert · SHA-256	EA7A25255D111FC3CE4CB8FABE3ADF9C…

🔐 DNSSEC196ms

Check	Result
Validation Status	🔒 Secure
AD Flag (resolver validates)	✓ Set
DS Record	✓ Found
DNSKEY Record	✓ Found
Flags	fully validated

🏷️ SOA0ms

Field	Value
Serial	2413456213
Primary NS (MNAME)	lisa.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

107ms

A

82ms

MX

71ms

AAAA

75ms

TXT

294ms

CAA

68ms

HTTPS

82ms

TLSA

183ms

SOA

0ms

MTA-STS

176ms

DNSSEC

196ms

SRV

150ms

Total

1384ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-29 14:16:11	1384ms	2 NS 2 A 1 MX	🔒 Secure	View
2026-08-28 05:24:24	1079ms	2 NS 2 A 1 MX	🔒 Secure	View
2026-08-17 21:11:08	4767ms	2 NS 2 A 1 MX	🔒 Secure	View
2026-08-12 17:46:35	5117ms	2 NS 2 A 1 MX	🔒 Secure	View
2026-08-08 03:08:11	1604ms	2 NS 2 A 1 MX	🔒 Secure	View
2026-08-04 05:33:33	1401ms	2 NS 2 A 1 MX	🔒 Secure	View
2026-07-21 04:25:15	1409ms	2 NS 2 A 1 MX	🔒 Secure	View
2026-07-17 20:04:27	2072ms	2 NS 2 A 1 MX	🔒 Secure	View
2026-07-12 06:57:47	1473ms	2 NS 2 A 1 MX	🔒 Secure	View
2026-07-07 03:23:16	1546ms	2 NS 2 A 1 MX	🔒 Secure	View
2026-07-03 06:17:10	1006ms	2 NS 2 A 1 MX	🔒 Secure	View
2026-06-26 08:28:27	774ms	2 NS 2 A 1 MX	🔒 Secure	View
2026-06-20 11:26:01	827ms	2 NS 2 A 1 MX	🔒 Secure	View
2026-06-16 12:47:59	2952ms	2 NS 2 A 1 MX	🔓 Insecure	View