systemflow.dk DNS records

🖥️ Nameservers2 records 32ms

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 Records2 records 42ms

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 Records3 records 35ms

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 32ms

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 Records1 records 40ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.5.249,172.67.134.20 ech=AEX+DQBB2AAgACAfZNqCOnmz2nrGVinQujyXTW5Fa01tNeOMAT2a+ZUiDgAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3031::6815:5f9,2606:4700:3031::ac43:8614

📝 TXT Records3 records 184ms

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

🔗 TLSA / DANE9 records 58ms

Service / Owner	Type	Cert association
SMTP _25._tcp.route1.mx.cloudflare.net	DANE-EE · SPKI · SHA-256	0F0C6C164A36F97E7B4C5A5B69D6F4F2…
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.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-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…

🔐 DNSSEC59ms

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	2410671058
Primary NS (MNAME)	sierra.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

32ms

A

42ms

MX

35ms

AAAA

32ms

TXT

184ms

CAA

36ms

HTTPS

40ms

TLSA

58ms

SOA

0ms

MTA-STS

43ms

DNSSEC

59ms

SRV

55ms

Total

1810ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-09-01 15:04:23	1648ms	2 NS 2 A 3 MX	🔓 Insecure	View
2026-08-27 17:10:57	1141ms	2 NS 2 A 3 MX	🔓 Insecure	View
2026-07-28 20:11:16	1810ms	2 NS 2 A 3 MX	🔓 Insecure	View
2026-07-18 15:46:25	17603ms	2 NS 2 A 3 MX	❓ Unknown	View
2026-06-18 07:22:46	1430ms	2 NS 2 A 3 MX	🔓 Insecure	View