2840.dk DNS records

🖥️ Nameservers2 records 46ms

Nameserver	IP addresses	PTR	ASN / ISP
ashley.ns.cloudflare.com	108.162.192.71 172.64.32.71 173.245.58.71 2606:4700:50::adf5:3a47 2803:f800:50::6ca2:c047 2a06:98c1:50::ac40:2047	ashley.ns.cloudflare.com ashley.ns.cloudflare.com ashley.ns.cloudflare.com ashley.ns.cloudflare.com ashley.ns.cloudflare.com ashley.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
clark.ns.cloudflare.com	108.162.193.87 172.64.33.87 173.245.59.87 2606:4700:58::adf5:3b57 2803:f800:50::6ca2:c157 2a06:98c1:50::ac40:2157	clark.ns.cloudflare.com clark.ns.cloudflare.com clark.ns.cloudflare.com clark.ns.cloudflare.com clark.ns.cloudflare.com clark.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records1 records 61ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
5.103.135.253	300s	5.103.135.253.static.fibianet.dk	AS44869	FIBIA P/S	5.103.0.0/16	🇩🇰 Denmark	Frederiksberg

📧 MX Records1 records 40ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	300s	2840-dk.w-v1.mx.microsoft	2a01:111:f403:ca04::10 2a01:111:f403:ca04::2 2a01:111:f403:ca09::6 2a01:111:f403:ca48::a 52.101.68.36 52.101.73.11 52.101.73.12 52.101.73.30	mail-dbapr03cu00100.inbound.protection.outlook.com mail-du2pr03cu00102.inbound.protection.outlook.com mail-am4pr0401cu00106.inbound.protection.outlook.com mail-miypr02cu00202.inbound.protection.outlook.com mail-db5pr02cu00104.inbound.protection.outlook.com mail-am1pr04cu00103.inbound.protection.outlook.com mail-am4pr0401cu00104.inbound.protection.outlook.com mail-am7pr05cu00306.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 → 40.104.116.24

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records1 records 112ms

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

📝 TXT Records2 records 220ms

TXT Record
MS=66AEE27A18607067FE2ED46023BDA28CC1BC31C7
v=spf1 include:spf.protection.outlook.com -all

✉️ SPF

Policy	Record (2840.dk)
-all (hard fail)	v=spf1 include:spf.protection.outlook.com -all

📨 DMARC

Policy	Record (_dmarc.2840.dk)
p=reject	v=DMARC1; p=reject; rua=mailto:d54afd0374ab453f9298290c4f7ad636@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 / DANE4 records 80ms

Service / Owner	Type	Cert association
SMTP _25._tcp.2840-dk.w-v1.mx.microsoft	DANE-EE · SPKI · SHA-256	54883CC5F1849331E6BF5002C3129D20…
SMTP _25._tcp.2840-dk.w-v1.mx.microsoft	DANE-TA · Full cert · SHA-256	EA7A25255D111FC3CE4CB8FABE3ADF9C…
SMTP _25._tcp.2840-dk.w-v1.mx.microsoft	DANE-EE · SPKI · SHA-256	803F7447CC75B208DBCA042346F5D8DF…
SMTP _25._tcp.2840-dk.w-v1.mx.microsoft	DANE-TA · Full cert · SHA-256	C1AD7778796D20BCA65C889A26550211…

🔐 DNSSEC103ms

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

🏷️ SOA0ms

Field	Value
Serial	2412977684
Primary NS (MNAME)	ashley.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

46ms

A

61ms

MX

40ms

AAAA

64ms

TXT

220ms

CAA

60ms

HTTPS

70ms

TLSA

80ms

SOA

0ms

MTA-STS

101ms

DNSSEC

103ms

SRV

112ms

Total

750ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-27 11:50:36	750ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-08-24 14:47:13	4101ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-08-02 19:38:57	1430ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-25 08:32:34	1978ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-09 05:32:13	2371ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-30 20:21:41	1013ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-16 12:38:55	799ms	2 NS 1 A 1 MX	🔒 Secure	View