heltec.dk

📜 Historical scan 2026-09-24 11:49:30 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

heltec.dk is a .dk domain served by 2 nameservers (coby.ns.cloudflare.com, sureena.ns.cloudflare.com). It was registered on 14 May 2004 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.37.94 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by route2.mx.cloudflare.net, route3.mx.cloudflare.net and 1 more. The zone is DNSSEC-signed and validates, 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 43ms

Nameserver	IP addresses	PTR	ASN / ISP
coby.ns.cloudflare.com	108.162.193.92 172.64.33.92 173.245.59.92 2606:4700:58::adf5:3b5c 2803:f800:50::6ca2:c15c 2a06:98c1:50::ac40:215c	coby.ns.cloudflare.com coby.ns.cloudflare.com coby.ns.cloudflare.com coby.ns.cloudflare.com coby.ns.cloudflare.com coby.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
sureena.ns.cloudflare.com	108.162.194.126 162.159.38.126 172.64.34.126 2606:4700:50::a29f:267e 2803:f800:50::6ca2:c27e 2a06:98c1:50::ac40:227e	sureena.ns.cloudflare.com sureena.ns.cloudflare.com sureena.ns.cloudflare.com sureena.ns.cloudflare.com sureena.ns.cloudflare.com sureena.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 35ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.37.94	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.206.218	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

3 records 40ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
71	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.
75	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.
99	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.

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	172.67.206.218
🔶 Autoconfig	104.21.37.94

🔷 AAAA Records (IPv6)#

2 records 58ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3033::ac43:ceda	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3037::6815:255e	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 37ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.37.94,172.67.206.218 ech=AEX+DQBBuwAgACCcwq/zmIf69cFFmwR/sEy42+TBTUSEoAthbabDgYjkAAAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3033::ac43:ceda,2606:4700:3037::6815:255e

📝 TXT Records#

1 records 183ms

TXT Record
v=spf1 include:_spf.mx.cloudflare.net ~all

✉️ SPF#

Policy	Record (heltec.dk)
~all (soft fail)	v=spf1 include:_spf.mx.cloudflare.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 2026-10-11 02:05:40

www	104.21.37.94 172.67.206.218 2606:4700:3033::ac43:ceda 2606:4700:3037::6815:255e (AS13335) (address records, no CNAME)
www vs bare domain	Same network heltec.dk: 104.21.37.94 172.67.206.218 2606:4700:3033::ac43:ceda 2606:4700:3037::6815:255e (AS13335) www.heltec.dk: 104.21.37.94 172.67.206.218 2606:4700:3033::ac43:ceda 2606:4700:3037::6815:255e (AS13335)
Wildcard	Yes: any name under the zone resolves
CDS / CDNSKEY	Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY

🔎 SPF check#

zone-wide SPF report

DNS lookups: 1/10 · policy: ~all

No problems found

🔏 ACME Challenge#

Type	Name	Value
TXT	_acme-challenge.heltec.dk	SrpR4gPU-tE-tZzSeFSk93ZC83CqOs-oXk-NXdyR5Ow
TXT	_acme-challenge.heltec.dk	VLxdT4hFmG6lSKOY06CYv30srmfu0hyyJ0mRXFyVtd4

🔗 TLSA / DANE#

9 records 74ms

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-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…

🔐 DNSSEC#

120ms

Check	Result
Validation Status	🔒 Secure
AD Flag (resolver validates)	✓ Set
DS Record	✓ Found
DNSKEY Record	✓ Found
Flags	fully validated

🏷️ SOA#

0ms

Field	Value
Serial	2415719503
Primary NS (MNAME)	coby.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 02:29:26

Field	Value
Registrar	WEBHOSTING A/S
Registered	2004-05-14
Expires	2027-05-31 (223d)

📋 WHOIS#

⏱️ Lookup Timing#

43ms

35ms

40ms

AAAA

58ms

TXT

183ms

CAA

31ms

HTTPS

37ms

TLSA

74ms

SOA

0ms

MTA-STS

67ms

DNSSEC

120ms

SRV

79ms

Total

1158ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-11 02:05:40	737ms	2 NS 2 A 3 MX	🔒 Secure
2026-09-25 11:55:37	1153ms	2 NS 2 A 3 MX	🔒 Secure
2026-09-24 11:49:30 shown	1158ms	2 NS 2 A 3 MX	🔒 Secure
2026-09-23 11:34:22	1475ms	2 NS 2 A 3 MX	🔒 Secure
2026-09-17 14:09:33	1237ms	2 NS 2 A 3 MX	🔒 Secure
2026-09-08 11:22:38	1992ms	2 NS 2 A 3 MX	🔒 Secure
2026-08-27 23:53:43	1094ms	2 NS 2 A 3 MX	🔒 Secure
2026-08-23 01:59:38	12596ms	2 NS 2 A 3 MX	🔒 Secure
2026-08-07 23:36:49	9985ms	2 NS 2 A 3 MX	🔒 Secure
2026-07-27 15:41:08	2024ms	2 NS 2 A 3 MX	🔒 Secure
2026-07-12 02:09:19	1794ms	2 NS 2 A 3 MX	🔒 Secure
2026-07-06 03:57:06	2982ms	2 NS 2 A 3 MX	🔒 Secure
2026-06-24 13:08:32	1495ms	2 NS 2 A 3 MX	🔒 Secure
2026-06-17 11:16:19	1508ms	2 NS 2 A 3 MX	🔒 Secure
2026-06-17 11:11:47	1558ms	2 NS 2 A 3 MX	🔒 Secure