tfk.dk DNS records

🖥️ Nameservers2 records 83ms

Nameserver	IP addresses	PTR	ASN / ISP
carter.ns.cloudflare.com	108.162.193.80 172.64.33.80 173.245.59.80 2606:4700:58::adf5:3b50 2803:f800:50::6ca2:c150 2a06:98c1:50::ac40:2150	carter.ns.cloudflare.com carter.ns.cloudflare.com carter.ns.cloudflare.com carter.ns.cloudflare.com carter.ns.cloudflare.com carter.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
jocelyn.ns.cloudflare.com	108.162.192.174 172.64.32.174 173.245.58.174 2606:4700:50::adf5:3aae 2803:f800:50::6ca2:c0ae 2a06:98c1:50::ac40:20ae	jocelyn.ns.cloudflare.com jocelyn.ns.cloudflare.com jocelyn.ns.cloudflare.com jocelyn.ns.cloudflare.com jocelyn.ns.cloudflare.com jocelyn.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records3 records 100ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.26.10.157	300s	—	AS13335	Cloudflare, Inc.	104.26.0.0/20	—	—
104.26.11.157	300s	—	AS13335	Cloudflare, Inc.	104.26.0.0/20	—	—
172.67.73.186	300s	—	AS13335	Cloudflare, Inc.	172.67.64.0/18	—	—

📧 MX Records1 records 104ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	tfk-dk.mail.protection.outlook.com	2a01:111:f403:ca04::10 2a01:111:f403:ca04::6 2a01:111:f403:ca04::d 2a01:111:f403:ca09::5 52.101.68.15 52.101.68.36 52.101.68.8 52.101.73.28	mail-dbapr03cu00100.inbound.protection.outlook.com mail-db4pr02cu00406.inbound.protection.outlook.com mail-db6pr03cu00105.inbound.protection.outlook.com mail-am1pr04cu00105.inbound.protection.outlook.com mail-db6pr03cu00107.inbound.protection.outlook.com mail-db5pr02cu00104.inbound.protection.outlook.com mail-du0pr03cu00100.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 → 40.104.116.56

🔷 AAAA Records (IPv6)3 records 129ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:20::681a:a9d	300s	—	AS13335	Cloudflare, Inc.	2606:4700:0:0:0:0:0:0/41	—	—
2606:4700:20::681a:b9d	300s	—	AS13335	Cloudflare, Inc.	2606:4700:0:0:0:0:0:0/41	—	—
2606:4700:20::ac43:49ba	300s	—	AS13335	Cloudflare, Inc.	2606:4700:0:0:0:0:0:0/41	—	—

🔐 HTTPS Records1 records 148ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.26.10.157,104.26.11.157,172.67.73.186 ipv6hint=2606:4700:20::681a:a9d,2606:4700:20::681a:b9d,2606:4700:20::ac43:49ba

🔌 SRV Records1 records 199ms

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

📝 TXT Records3 records 385ms

TXT Record
google-site-verification=RLk49lzHRaF_RGTaJp84VFm9q4S-sdLNYexzZ31OxZw
MS=ms60015214
v=spf1 include:spf.protection.outlook.com include:spf.mailjet.com ~all

✉️ SPF

Policy	Record (tfk.dk)
~all (soft fail)	v=spf1 include:spf.protection.outlook.com include:spf.mailjet.com ~all

📨 DMARC

Policy	Record (_dmarc.tfk.dk)
p=none (monitor only)	v=DMARC1; p=none; rua=mailto:3a500e3eefc84d3e889b1eddc321469f@dmarc-reports.cloudflare.net

📬 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 / DANE

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

🔐 DNSSEC256ms

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	2412912791
Primary NS (MNAME)	carter.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

83ms

A

100ms

MX

104ms

AAAA

129ms

TXT

385ms

CAA

116ms

HTTPS

148ms

TLSA

1347ms

SOA

0ms

MTA-STS

176ms

DNSSEC

256ms

SRV

199ms

Total

6486ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-23 13:23:20	6486ms	2 NS 3 A 1 MX	🔓 Insecure	View
2026-08-09 22:28:11	2443ms	2 NS 3 A 1 MX	🔓 Insecure	View
2026-08-02 20:32:51	10989ms	2 NS 3 A 1 MX	🔓 Insecure	View
2026-07-24 04:31:23	1438ms	2 NS 2 A 1 MX	🔓 Insecure	View
2026-07-18 13:02:49	11977ms	2 NS 2 A 1 MX	🔓 Insecure	View
2026-07-11 08:25:17	2892ms	2 NS 2 A 1 MX	🔓 Insecure	View
2026-07-10 06:29:19	2750ms	2 NS 2 A 1 MX	🔓 Insecure	View
2026-06-26 09:26:15	1356ms	2 NS 2 A 1 MX	🔓 Insecure	View
2026-06-24 00:18:37	1181ms	0 NS 0 A 0 MX	❓ Unknown	View
2026-06-17 23:18:29	2304ms	2 NS 2 A 1 MX	🔓 Insecure	View