csbackend.dk DNS records

🖥️ Nameservers2 records 30ms

Nameserver	IP addresses	PTR	ASN / ISP
amanda.ns.cloudflare.com	108.162.192.63 172.64.32.63 173.245.58.63 2606:4700:50::adf5:3a3f 2803:f800:50::6ca2:c03f 2a06:98c1:50::ac40:203f	amanda.ns.cloudflare.com amanda.ns.cloudflare.com amanda.ns.cloudflare.com amanda.ns.cloudflare.com amanda.ns.cloudflare.com amanda.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
logan.ns.cloudflare.com	108.162.193.198 172.64.33.198 173.245.59.198 2606:4700:58::adf5:3bc6 2803:f800:50::6ca2:c1c6 2a06:98c1:50::ac40:21c6	logan.ns.cloudflare.com logan.ns.cloudflare.com logan.ns.cloudflare.com logan.ns.cloudflare.com logan.ns.cloudflare.com logan.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records2 records 33ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.18.8.57	300s	—	AS13335	Cloudflare, Inc.	104.16.0.0/14	—	—
104.18.9.57	300s	—	AS13335	Cloudflare, Inc.	104.16.0.0/14	—	—

📧 MX Records3 records 22ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	300s	mx1-dk.centerasecurity.dk	128.76.60.167 128.76.60.187 89.233.19.127 89.233.19.127 89.233.19.188 89.233.19.188	mx6.centerasecurity.dk mx6.centerasecurity.dk 127.0-254.19.233.89.in-addr.arpa mx14.centerasecurity.dk 188.0-254.19.233.89.in-addr.arpa mx14.centerasecurity.dk	AS3292 TDC Holding A/S AS3292 TDC Holding A/S AS3308 Norlys Digital A/S AS3308 Norlys Digital A/S AS3308 Norlys Digital A/S AS3308 Norlys Digital A/S
10	300s	mx2-dk.centerasecurity.dk	128.76.60.168 128.76.60.169 89.233.19.128 89.233.19.128 89.233.19.129 89.233.19.129	mx6.centerasecurity.dk mx6.centerasecurity.dk 128.0-254.19.233.89.in-addr.arpa mx14.centerasecurity.dk 129.0-254.19.233.89.in-addr.arpa mx14.centerasecurity.dk	AS3292 TDC Holding A/S AS3292 TDC Holding A/S AS3308 Norlys Digital A/S AS3308 Norlys Digital A/S AS3308 Norlys Digital A/S AS3308 Norlys Digital A/S
20	300s	mx3-dk.centerasecurity.dk	128.76.60.187 89.233.19.129 89.233.19.129	mx6.centerasecurity.dk 129.0-254.19.233.89.in-addr.arpa mx14.centerasecurity.dk	AS3292 TDC Holding A/S AS3308 Norlys Digital A/S AS3308 Norlys Digital A/S

🔷 AAAA Records (IPv6)2 records 28ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700::6812:839	300s	—	AS13335	Cloudflare, Inc.	2606:4700:0:0:0:0:0:0/41	—	—
2606:4700::6812:939	300s	—	AS13335	Cloudflare, Inc.	2606:4700:0:0:0:0:0:0/41	—	—

🔐 HTTPS Records1 records 34ms

Priority	Target	SvcParams
1 service	.	alpn="h2" ipv4hint=104.18.8.57,104.18.9.57 ipv6hint=2606:4700::6812:839,2606:4700::6812:939

🔌 SRV Records1 records 53ms

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

📝 TXT Records5 records 149ms

TXT Record
_globalsign-domain-verification=3I1VW9vCjPc9BMTvaFREt8gSE63CfEXnb6PVsmRVc7
atlassian-domain-verification=0tMkGqBybYVbAJBlWf94bfCtJuuEdLkeCEnp5tSED3uMUOoa2x50sG/1P0lig9st
MS=ms51067431
v=spf1 include:_spf.centerasecurity.dk include:amazonses.com include:spf.protection.outlook.com -all
vt9ja7da3b8niojcebk7ggfsnv

✉️ SPF

Policy	Record (csbackend.dk)
-all (hard fail)	v=spf1 include:_spf.centerasecurity.dk include:amazonses.com include:spf.protection.outlook.com -all

📨 DMARC

Policy	Record (_dmarc.csbackend.dk)
p=quarantine	v=DMARC1; p=quarantine; rua=mailto:640aea3defeb3@dmarc.centerasecurity.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

🔏 ACME Challenge

Type	Name	Value
TXT	_acme-challenge.csbackend.dk	25feaT4yky4WlLKQVxUMx_BBZ_JSy012sz8_2bswH3s
TXT	_acme-challenge.csbackend.dk	oo-J29oP3M8cMx6RK3aVIaCw5-OdHsml7cLTJkOGOL4

🔗 TLSA / DANE6 records 60ms

Service / Owner	Type	Cert association
SMTP _25._tcp.mx1-dk.centerasecurity.dk	DANE-EE · SPKI · SHA-256	56315B43B892E9AEE184919EC6A5821C…
SMTP _25._tcp.mx1-dk.centerasecurity.dk	DANE-EE · SPKI · SHA-256	D4C349E7B72F5CF4A9CEA358F98947C2…
SMTP _25._tcp.mx2-dk.centerasecurity.dk	DANE-EE · SPKI · SHA-256	56315B43B892E9AEE184919EC6A5821C…
SMTP _25._tcp.mx2-dk.centerasecurity.dk	DANE-EE · SPKI · SHA-256	D4C349E7B72F5CF4A9CEA358F98947C2…
SMTP _25._tcp.mx3-dk.centerasecurity.dk	DANE-EE · SPKI · SHA-256	D4C349E7B72F5CF4A9CEA358F98947C2…
SMTP _25._tcp.mx3-dk.centerasecurity.dk	DANE-EE · SPKI · SHA-256	56315B43B892E9AEE184919EC6A5821C…

🔐 DNSSEC101ms

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	2413519377
Primary NS (MNAME)	amanda.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

30ms

A

33ms

MX

22ms

AAAA

28ms

TXT

149ms

CAA

21ms

HTTPS

34ms

TLSA

60ms

SOA

0ms

MTA-STS

43ms

DNSSEC

101ms

SRV

53ms

Total

969ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-30 17:03:05	969ms	2 NS 2 A 3 MX	🔓 Insecure	View
2026-08-26 21:01:10	917ms	2 NS 2 A 3 MX	🔓 Insecure	View
2026-08-24 19:11:30	12891ms	2 NS 2 A 3 MX	🔓 Insecure	View
2026-08-22 15:27:18	5676ms	2 NS 2 A 3 MX	🔓 Insecure	View
2026-08-21 15:22:43	3190ms	2 NS 2 A 3 MX	🔓 Insecure	View
2026-08-19 03:51:08	5908ms	2 NS 2 A 3 MX	🔓 Insecure	View
2026-08-18 01:36:36	5787ms	2 NS 2 A 3 MX	🔓 Insecure	View
2026-08-13 20:37:06	1614ms	2 NS 2 A 3 MX	🔓 Insecure	View
2026-08-03 18:36:19	1545ms	2 NS 2 A 3 MX	🔓 Insecure	View
2026-08-01 02:10:59	2449ms	2 NS 2 A 3 MX	🔓 Insecure	View
2026-07-26 03:42:00	9361ms	2 NS 2 A 3 MX	🔓 Insecure	View
2026-07-23 00:44:06	10000ms	2 NS 2 A 3 MX	🔓 Insecure	View
2026-07-21 03:14:05	2147ms	2 NS 2 A 3 MX	🔓 Insecure	View
2026-07-19 23:13:00	25147ms	2 NS 2 A 3 MX	🔓 Insecure	View
2026-07-18 22:53:13	1776ms	2 NS 2 A 3 MX	🔓 Insecure	View
2026-07-17 17:35:23	1923ms	2 NS 2 A 3 MX	🔓 Insecure	View
2026-07-15 00:30:30	17354ms	2 NS 2 A 3 MX	🔓 Insecure	View
2026-07-13 16:26:58	1203ms	2 NS 2 A 3 MX	🔓 Insecure	View
2026-07-08 22:26:20	2090ms	2 NS 2 A 3 MX	🔓 Insecure	View
2026-07-06 04:52:18	2370ms	2 NS 2 A 3 MX	🔓 Insecure	View
2026-07-03 15:49:25	1915ms	2 NS 2 A 3 MX	🔓 Insecure	View
2026-07-01 22:56:39	1783ms	2 NS 2 A 3 MX	🔓 Insecure	View
2026-06-27 15:44:14	878ms	2 NS 2 A 3 MX	🔓 Insecure	View
2026-06-25 02:13:20	1006ms	2 NS 2 A 3 MX	🔓 Insecure	View
2026-06-19 07:21:30	5361ms	2 NS 2 A 3 MX	🔓 Insecure	View