csonline.dk

📜 Historical scan 2026-08-31 09:56:07 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

csonline.dk is a .dk domain served by 2 nameservers (amanda.ns.cloudflare.com, logan.ns.cloudflare.com). It was registered on 15 August 2018 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.18.22.64 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by mx1-dk.centerasecurity.dk, mx2-dk.centerasecurity.dk and 1 more. The zone is not DNSSEC-signed, publishes a DMARC policy and is reachable over IPv6. Below are all of its DNS records from this scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.

🖥️ Nameservers#

2 records 35ms

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 Records#

2 records 29ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.18.22.64	300s	—	AS13335	Cloudflare, Inc.	104.16.0.0/14	—	—
104.18.23.64	300s	—	AS13335	Cloudflare, Inc.	104.16.0.0/14	—	—

📧 MX Records#

3 records 33ms

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 Telco A/S AS3308 Norlys Telco A/S AS3308 Norlys Telco A/S AS3308 Norlys Telco 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 Telco A/S AS3308 Norlys Telco A/S AS3308 Norlys Telco A/S AS3308 Norlys Telco 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 Telco A/S AS3308 Norlys Telco A/S

🔷 AAAA Records (IPv6)#

2 records 31ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700::6812:1640	300s	—	AS13335	Cloudflare, Inc.	2606:4700:0:0:0:0:0:0/41	—	—
2606:4700::6812:1740	300s	—	AS13335	Cloudflare, Inc.	2606:4700:0:0:0:0:0:0/41	—	—

🔐 HTTPS Records#

1 records 24ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.18.22.64,104.18.23.64 ech=AEX+DQBBBAAgACB+FYP9Hp+MawXwVPA5Uwz+yLL3LQzSzPRUsXqwoFD0FwAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700::6812:1640,2606:4700::6812:1740

📝 TXT Records#

2 records 126ms

TXT Record
MS=ms87175346
v=spf1 include:_spf.centerasecurity.dk include:amazonses.com include:spf.protection.outlook.com -all

✉️ SPF#

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

📨 DMARC#

Policy	Record (_dmarc.csonline.dk)
p=none (monitor only)	v=DMARC1; p=none; 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

🧩 Web & zone#

latest probe, not this scan · checked 2026-10-14 13:11:52

www	104.18.22.64 104.18.23.64 2606:4700::6812:1640 2606:4700::6812:1740 (AS13335) (address records, no CNAME)
www vs bare domain	Same network csonline.dk: 104.18.22.64 104.18.23.64 2606:4700::6812:1640 2606:4700::6812:1740 (AS13335) www.csonline.dk: 104.18.22.64 104.18.23.64 2606:4700::6812:1640 2606:4700::6812:1740 (AS13335)
Wildcard	No

✍️ DKIM keys#

2 found

Selector	CNAME	Key
s1	s1.domainkey.u47778511.wl012.sendgrid.net	RSA · ~2048 bit
s2	s2.domainkey.u47778511.wl012.sendgrid.net	RSA · ~2048 bit

DKIM selectors can't be listed, so we check the common ones (Microsoft 365, Google, Mailchimp, SendGrid, generic). Keys under other selectors aren't shown.

🔎 SPF check#

zone-wide SPF report

DNS lookups: 3/10 · policy: -all

No problems found

🔗 TLSA / DANE#

6 records 132ms

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	D4C349E7B72F5CF4A9CEA358F98947C2…
SMTP _25._tcp.mx2-dk.centerasecurity.dk	DANE-EE · SPKI · SHA-256	56315B43B892E9AEE184919EC6A5821C…
SMTP _25._tcp.mx3-dk.centerasecurity.dk	DANE-EE · SPKI · SHA-256	56315B43B892E9AEE184919EC6A5821C…
SMTP _25._tcp.mx3-dk.centerasecurity.dk	DANE-EE · SPKI · SHA-256	D4C349E7B72F5CF4A9CEA358F98947C2…

🔐 DNSSEC#

96ms

Check	Result
Validation Status	🔓 Insecure
AD Flag (resolver validates)	✗ Not set
DS Record	✗ Not found
DNSKEY Record	✗ Not found
Flags	unsigned answer

🏷️ SOA#

0ms

Field	Value
Serial	2413572739
Primary NS (MNAME)	amanda.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-11 01:49:22

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2018-08-15
Expires	2027-08-31 (313d)

📋 WHOIS#

⏱️ Lookup Timing#

35ms

29ms

33ms

AAAA

31ms

TXT

126ms

CAA

23ms

HTTPS

24ms

TLSA

132ms

SOA

0ms

MTA-STS

39ms

DNSSEC

96ms

SRV

44ms

Total

767ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-14 13:11:52	805ms	2 NS 2 A 3 MX	🔓 Insecure
2026-10-01 02:05:30	2324ms	2 NS 2 A 3 MX	🔓 Insecure
2026-09-12 00:37:20	2199ms	2 NS 2 A 3 MX	🔓 Insecure
2026-09-04 12:23:44	691ms	2 NS 2 A 3 MX	🔓 Insecure
2026-08-31 09:56:07 shown	767ms	2 NS 2 A 3 MX	🔓 Insecure
2026-08-27 23:25:25	1098ms	2 NS 2 A 3 MX	🔓 Insecure
2026-08-07 04:40:36	1646ms	2 NS 2 A 3 MX	🔓 Insecure
2026-07-11 22:22:43	1568ms	2 NS 2 A 3 MX	🔓 Insecure
2026-07-08 22:09:54	10590ms	2 NS 2 A 3 MX	🔓 Insecure
2026-06-26 08:23:00	2929ms	2 NS 2 A 3 MX	🔓 Insecure
2026-06-16 23:06:17	2762ms	2 NS 2 A 3 MX	🔓 Insecure