link16.dk DNS records

🖥️ Nameservers2 records 346ms

Nameserver	IP addresses	PTR	ASN / ISP
john.ns.cloudflare.com	108.162.193.185 172.64.33.185 173.245.59.185 2606:4700:58::adf5:3bb9 2803:f800:50::6ca2:c1b9 2a06:98c1:50::ac40:21b9	john.ns.cloudflare.com john.ns.cloudflare.com john.ns.cloudflare.com john.ns.cloudflare.com john.ns.cloudflare.com john.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
virginia.ns.cloudflare.com	108.162.194.37 162.159.38.37 172.64.34.37 2606:4700:50::a29f:2625 2803:f800:50::6ca2:c225 2a06:98c1:50::ac40:2225	virginia.ns.cloudflare.com virginia.ns.cloudflare.com virginia.ns.cloudflare.com virginia.ns.cloudflare.com virginia.ns.cloudflare.com virginia.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 346ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	300s	link16-dk.mail.protection.outlook.com	2a01:111:f403:ca04::8 2a01:111:f403:ca04::b 2a01:111:f403:ca09::20 2a01:111:f403:ca09::c 52.101.68.29 52.101.68.32 52.101.73.1 52.101.73.28	mail-db5pr02cu00100.inbound.protection.outlook.com mail-dbbpr03cu00103.inbound.protection.outlook.com mail-as8pr05cu00400.inbound.protection.outlook.com mail-as8pr05cu00304.inbound.protection.outlook.com mail-dbapr03cu00105.inbound.protection.outlook.com mail-db3pr0202cu00200.inbound.protection.outlook.com mail-am3pr04cu00501.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 → 40.104.116.40

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records1 records 687ms

Service	Priority	Weight	Port	Target
_sipfederationtls._tcp	0	1	5061	sipfed.online.lync.com

📝 TXT Records1 records 960ms

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

✉️ SPF

Policy	Record (link16.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

🔗 TLSA / DANE

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

🔐 DNSSEC884ms

Check	Result
Validation Status	🔒 Secure
AD Flag (resolver validates)	✓ Set
DS Record	✓ Found
DNSKEY Record	✓ Found
Flags	resolution failed: ncache nxrrset

🏷️ SOA0ms

Field	Value
Serial	2412197492
Primary NS (MNAME)	john.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

346ms

A

317ms

MX

346ms

AAAA

348ms

TXT

960ms

CAA

232ms

HTTPS

494ms

TLSA

806ms

SOA

0ms

MTA-STS

708ms

DNSSEC

884ms

SRV

687ms

Total

4785ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-15 18:15:33	4785ms	2 NS 0 A 1 MX	🔒 Secure	View
2026-07-23 00:05:16	13514ms	2 NS 0 A 1 MX	🔒 Secure	View
2026-07-12 15:17:49	2743ms	2 NS 0 A 1 MX	🔒 Secure	View
2026-06-27 15:39:34	1613ms	2 NS 0 A 1 MX	🔒 Secure	View
2026-06-26 09:16:54	2771ms	2 NS 0 A 1 MX	🔒 Secure	View
2026-06-18 05:31:28	4967ms	2 NS 0 A 1 MX	🔒 Secure	View