openflow.dk

📜 Historical scan 2026-08-27 09:11:02 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

openflow.dk is a .dk domain served by 2 nameservers (emerson.ns.cloudflare.com, natasha.ns.cloudflare.com). It was registered on 22 December 2014 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.69.213 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by alt3.aspmx.l.google.com, alt4.aspmx.l.google.com and 3 more. The zone is not DNSSEC-signed, has no 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 37ms

Nameserver	IP addresses	PTR	ASN / ISP
emerson.ns.cloudflare.com	108.162.195.96 162.159.44.96 172.64.35.96 2606:4700:58::a29f:2c60 2803:f800:50::6ca2:c360 2a06:98c1:50::ac40:2360	emerson.ns.cloudflare.com emerson.ns.cloudflare.com emerson.ns.cloudflare.com emerson.ns.cloudflare.com emerson.ns.cloudflare.com emerson.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
natasha.ns.cloudflare.com	108.162.194.117 162.159.38.117 172.64.34.117 2606:4700:50::a29f:2675 2803:f800:50::6ca2:c275 2a06:98c1:50::ac40:2275	natasha.ns.cloudflare.com natasha.ns.cloudflare.com natasha.ns.cloudflare.com natasha.ns.cloudflare.com natasha.ns.cloudflare.com natasha.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
104.21.69.213	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.213.94	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

5 records 39ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	300s	alt3.aspmx.l.google.com	172.253.158.27 2404:6800:4003:c26::1b	so-in-f27.1e100.net so-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC
0	300s	alt4.aspmx.l.google.com	172.253.158.27 2404:6800:4003:c26::1b	so-in-f27.1e100.net so-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC
1	300s	aspmx.l.google.com	142.251.9.26 2a00:1450:4025:c01::1a	rc-in-f26.1e100.net rd-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC
5	300s	alt1.aspmx.l.google.com	192.178.211.27 2404:6800:4013:813::1a	lcbomp-in-f27.1e100.net lcdels-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC
5	300s	alt2.aspmx.l.google.com	173.194.41.27 173.194.41.27 2404:6800:4001:c01::1b	mad01s14-in-f27.1e100.net yukulwh-in-f27.1e100.net yukulwh-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC

🔷 AAAA Records (IPv6)#

2 records 43ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3033::6815:45d5	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3035::ac43:d55e	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 27ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.69.213,172.67.213.94 ech=AEX+DQBBfAAgACBhkKfZrq8VdKvHn+TBYTJAvQR6/B0psmqgGa/fFeAqawAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3033::6815:45d5,2606:4700:3035::ac43:d55e

📝 TXT Records#

2 records 150ms

TXT Record
MS=ms94023882
v=spf1 include:_spf.google.com include:sendgrid.net include:u3802857.wl108.sendgrid.net ~all

✉️ SPF#

Policy	Record (openflow.dk)
~all (soft fail)	v=spf1 include:_spf.google.com include:sendgrid.net include:u3802857.wl108.sendgrid.net ~all

📨 DMARC#

✗ No DMARC record — mail spoofing not restricted

📬 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 2026-10-13 09:07:56

www	104.21.69.213 172.67.213.94 2606:4700:3033::6815:45d5 2606:4700:3035::ac43:d55e (AS13335) (address records, no CNAME)
www vs bare domain	Same network openflow.dk: 104.21.69.213 172.67.213.94 2606:4700:3033::6815:45d5 2606:4700:3035::ac43:d55e (AS13335) www.openflow.dk: 104.21.69.213 172.67.213.94 2606:4700:3033::6815:45d5 2606:4700:3035::ac43:d55e (AS13335)
Wildcard	No

🔎 SPF check#

zone-wide SPF report

DNS lookups: 6/10 · policy: ~all

No problems found

🔏 ACME Challenge#

Type	Name	Value
TXT	_acme-challenge.openflow.dk	mAj7A3b5XLBxQhqebhFg8wJccLG4FGokO2FOwbT4uRo
TXT	_acme-challenge.openflow.dk	xwirYOWR4kmwykGRBIfQ4YI_2K4f9O0L3-aY5DNrM78

🔗 TLSA / DANE#

✗ No TLSA records — DANE not configured for HTTPS (_443) or MX (_25)

🔐 DNSSEC#

110ms

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	2413256276
Primary NS (MNAME)	emerson.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-08 22:28:34

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2014-12-22
Expires	2028-12-31 (805d)

📋 WHOIS#

⏱️ Lookup Timing#

37ms

29ms

39ms

AAAA

43ms

TXT

150ms

CAA

46ms

HTTPS

27ms

TLSA

117ms

SOA

0ms

MTA-STS

55ms

DNSSEC

110ms

SRV

60ms

Total

784ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-13 09:07:56	1424ms	2 NS 2 A 5 MX	🔓 Insecure
2026-10-07 23:31:39	588ms	2 NS 2 A 5 MX	🔓 Insecure
2026-09-30 13:03:13	736ms	2 NS 2 A 5 MX	🔓 Insecure
2026-09-24 18:52:50	845ms	2 NS 2 A 5 MX	🔓 Insecure
2026-08-29 10:40:30	825ms	2 NS 2 A 5 MX	🔓 Insecure
2026-08-27 09:11:02 shown	784ms	2 NS 2 A 5 MX	🔓 Insecure
2026-08-26 09:05:32	1307ms	2 NS 2 A 5 MX	🔓 Insecure
2026-08-16 22:50:14	1465ms	2 NS 2 A 5 MX	🔓 Insecure
2026-06-17 15:38:15	1177ms	2 NS 2 A 5 MX	🔓 Insecure