systemflow.dk

📜 Historical scan 2026-09-15 11:31:57 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

systemflow.dk is a .dk domain served by 2 nameservers (sierra.ns.cloudflare.com, trey.ns.cloudflare.com). It was registered on 11 April 2025 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.5.249 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by route1.mx.cloudflare.net, route2.mx.cloudflare.net 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 197ms

Nameserver	IP addresses	PTR	ASN / ISP
sierra.ns.cloudflare.com	108.162.194.245 162.159.38.245 172.64.34.245 2606:4700:50::a29f:26f5 2803:f800:50::6ca2:c2f5 2a06:98c1:50::ac40:22f5	sierra.ns.cloudflare.com sierra.ns.cloudflare.com sierra.ns.cloudflare.com sierra.ns.cloudflare.com sierra.ns.cloudflare.com sierra.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
trey.ns.cloudflare.com	108.162.193.242 172.64.33.242 173.245.59.242 2606:4700:58::adf5:3bf2 2803:f800:50::6ca2:c1f2 2a06:98c1:50::ac40:21f2	trey.ns.cloudflare.com trey.ns.cloudflare.com trey.ns.cloudflare.com trey.ns.cloudflare.com trey.ns.cloudflare.com trey.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 221ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.5.249	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.134.20	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

3 records 154ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
6	300s	route1.mx.cloudflare.net	162.159.205.11 162.159.205.12 162.159.205.13 2606:4700:f5::b 2606:4700:f5::c 2606:4700:f5::d	route1.mx.cloudflare.net route1.mx.cloudflare.net route1.mx.cloudflare.net route1.mx.cloudflare.net route1.mx.cloudflare.net route1.mx.cloudflare.net	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
93	300s	route2.mx.cloudflare.net	162.159.205.17 162.159.205.18 162.159.205.19 2606:4700:f5::10 2606:4700:f5::e 2606:4700:f5::f	route2.mx.cloudflare.net route2.mx.cloudflare.net route2.mx.cloudflare.net route2.mx.cloudflare.net route2.mx.cloudflare.net route2.mx.cloudflare.net	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
95	300s	route3.mx.cloudflare.net	162.159.205.23 162.159.205.24 162.159.205.25 2606:4700:f5::11 2606:4700:f5::12 2606:4700:f5::13	route3.mx.cloudflare.net route3.mx.cloudflare.net route3.mx.cloudflare.net route3.mx.cloudflare.net route3.mx.cloudflare.net route3.mx.cloudflare.net	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🔷 AAAA Records (IPv6)#

2 records 228ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3031::6815:5f9	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3031::ac43:8614	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 195ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.5.249,172.67.134.20 ech=AEX+DQBBlQAgACBBYrIN71MlOF7H0GaO3bjWIsCmvNECrPNB5pfROmN7KQAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3031::6815:5f9,2606:4700:3031::ac43:8614

📝 TXT Records#

3 records 570ms

TXT Record
google-site-verification=c4QnTa7vHW7vaO2a16SCi09X1PzFwn-zfqMDpoqKw1I
v=spf1 include:_spf.mx.cloudflare.net include:amazonses.com ~all
v=spf1 include:mailgun.org ~all

✉️ SPF#

⚠ Multiple SPF records — RFC 7208 §4.5 violation (receivers must treat this as permerror)

Policy	Record (systemflow.dk)
~all (soft fail)	v=spf1 include:_spf.mx.cloudflare.net include:amazonses.com ~all
~all (soft fail)	v=spf1 include:mailgun.org ~all

📨 DMARC#

Policy	Record (_dmarc.systemflow.dk)
p=none (monitor only)	v=DMARC1; p=none; rua=mailto:f774dbf4bb2d40cab451fe75f7f09e6d@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

🧩 Web & zone#

latest probe, not this scan · checked 2026-10-09 17:37:00

www	104.21.5.249 172.67.134.20 2606:4700:3031::6815:5f9 2606:4700:3031::ac43:8614 (AS13335) (address records, no CNAME)
www vs bare domain	Same network systemflow.dk: 104.21.5.249 172.67.134.20 2606:4700:3031::6815:5f9 2606:4700:3031::ac43:8614 (AS13335) www.systemflow.dk: 104.21.5.249 172.67.134.20 2606:4700:3031::6815:5f9 2606:4700:3031::ac43:8614 (AS13335)
Wildcard	No

🔎 SPF check#

zone-wide SPF report

DNS lookups: 2/10 · policy: ~all

error 2 SPF records: receivers must treat that as a permanent error (RFC 7208 §4.5)

🔏 ACME Challenge#

Type	Name	Value
TXT	_acme-challenge.systemflow.dk	D762MpIwZpQnFoa4vx_yJQ39cAfpUe_6_wOjiH2s-FQ
TXT	_acme-challenge.systemflow.dk	vydI72LdqJ40W0Gi62gJ9U7syd4zBlJa28kEs8Vi-Hc

🔗 TLSA / DANE#

9 records 281ms

Service / Owner	Type	Cert association
SMTP _25._tcp.route1.mx.cloudflare.net	DANE-EE · SPKI · SHA-256	9BE5B7D47F9EFF930C11EB04D27CAE6B…
SMTP _25._tcp.route1.mx.cloudflare.net	DANE-TA · SPKI · SHA-256	59E738E674221702AF1EDB87C5200C1A…
SMTP _25._tcp.route1.mx.cloudflare.net	DANE-EE · SPKI · SHA-256	0F0C6C164A36F97E7B4C5A5B69D6F4F2…
SMTP _25._tcp.route2.mx.cloudflare.net	DANE-TA · SPKI · SHA-256	59E738E674221702AF1EDB87C5200C1A…
SMTP _25._tcp.route2.mx.cloudflare.net	DANE-EE · SPKI · SHA-256	0F0C6C164A36F97E7B4C5A5B69D6F4F2…
SMTP _25._tcp.route2.mx.cloudflare.net	DANE-EE · SPKI · SHA-256	9BE5B7D47F9EFF930C11EB04D27CAE6B…
SMTP _25._tcp.route3.mx.cloudflare.net	DANE-TA · SPKI · SHA-256	59E738E674221702AF1EDB87C5200C1A…
SMTP _25._tcp.route3.mx.cloudflare.net	DANE-EE · SPKI · SHA-256	0F0C6C164A36F97E7B4C5A5B69D6F4F2…
SMTP _25._tcp.route3.mx.cloudflare.net	DANE-EE · SPKI · SHA-256	9BE5B7D47F9EFF930C11EB04D27CAE6B…

🔐 DNSSEC#

282ms

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	2414871955
Primary NS (MNAME)	sierra.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-12 16:54:33

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2025-04-11
Expires	2027-04-10 (173d)

🔗 Same registrant#

1 domain

Other .dk domains whose WHOIS registrant has the same name and postal address. Matched on a keyed hash: the registrant's details are not stored or shown. Covers only domains whose WHOIS we have fetched (refreshed about monthly).

Domain	Registrar
apphuset.dk	Punktum dk A/S (direct)

📋 WHOIS#

⏱️ Lookup Timing#

197ms

221ms

154ms

AAAA

228ms

TXT

570ms

CAA

221ms

HTTPS

195ms

TLSA

281ms

SOA

0ms

MTA-STS

201ms

DNSSEC

282ms

SRV

231ms

Total

3085ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-09-30 09:13:39	648ms	2 NS 2 A 3 MX	🔓 Insecure
2026-09-29 15:23:13	2586ms	2 NS 2 A 3 MX	🔓 Insecure
2026-09-25 20:22:35	1028ms	2 NS 2 A 3 MX	🔓 Insecure
2026-09-20 13:18:16	1061ms	2 NS 2 A 3 MX	🔓 Insecure
2026-09-15 11:31:57 shown	3085ms	2 NS 2 A 3 MX	🔓 Insecure
2026-09-01 15:04:23	1648ms	2 NS 2 A 3 MX	🔓 Insecure
2026-08-27 17:10:57	1141ms	2 NS 2 A 3 MX	🔓 Insecure
2026-07-28 20:11:16	1810ms	2 NS 2 A 3 MX	🔓 Insecure
2026-07-18 15:46:25	17603ms	2 NS 2 A 3 MX	❓ Unknown
2026-06-18 07:22:46	1430ms	2 NS 2 A 3 MX	🔓 Insecure