optiheat.dk

📜 Historical scan 2026-08-06 23:23:46 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

optiheat.dk is a .dk domain served by 2 nameservers (kate.ns.cloudflare.com, keanu.ns.cloudflare.com). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.16.247 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by .. 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 103ms

Nameserver	IP addresses	PTR	ASN / ISP
kate.ns.cloudflare.com	108.162.192.124 172.64.32.124 173.245.58.124 2606:4700:50::adf5:3a7c 2803:f800:50::6ca2:c07c 2a06:98c1:50::ac40:207c	kate.ns.cloudflare.com kate.ns.cloudflare.com kate.ns.cloudflare.com kate.ns.cloudflare.com kate.ns.cloudflare.com kate.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
keanu.ns.cloudflare.com	108.162.195.167 162.159.44.167 172.64.35.167 2606:4700:58::a29f:2ca7 2803:f800:50::6ca2:c3a7 2a06:98c1:50::ac40:23a7	keanu.ns.cloudflare.com keanu.ns.cloudflare.com keanu.ns.cloudflare.com keanu.ns.cloudflare.com keanu.ns.cloudflare.com keanu.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 119ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.16.247	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.217.84	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

1 records 113ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	300s	. Null MX — domain accepts no email (RFC 7505)

🔷 AAAA Records (IPv6)#

2 records 101ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3033::6815:10f7	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3035::ac43:d954	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 117ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.16.247,172.67.217.84 ech=AEX+DQBBuAAgACD3mn14HPRulWNZPM1X64MvXZ8lWPQ3OK9xkASC1dd7bQAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3033::6815:10f7,2606:4700:3035::ac43:d954

📝 TXT Records#

1 records 267ms

TXT Record
brevo-code:3f71c5b7d24d94fba9bc3a51a43761d5

✉️ SPF#

✗ No SPF record — mail spoofing not restricted

📨 DMARC#

Policy	Record (_dmarc.optiheat.dk)
p=none (monitor only)	v=DMARC1; p=none; rua=mailto:rua@dmarc.brevo.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 2026-10-10 15:06:56

www	104.21.16.247 172.67.217.84 2606:4700:3033::6815:10f7 2606:4700:3035::ac43:d954 (AS13335) (address records, no CNAME)
www vs bare domain	Same network optiheat.dk: 104.21.16.247 172.67.217.84 2606:4700:3033::6815:10f7 2606:4700:3035::ac43:d954 (AS13335) www.optiheat.dk: 104.21.16.247 172.67.217.84 2606:4700:3033::6815:10f7 2606:4700:3035::ac43:d954 (AS13335)
Wildcard	No

🔗 TLSA / DANE#

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

🔐 DNSSEC#

170ms

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	2411008617
Primary NS (MNAME)	kate.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

✗ No registration data yet — queued for a WHOIS lookup

📋 WHOIS#

⏱️ Lookup Timing#

103ms

119ms

113ms

AAAA

101ms

TXT

267ms

CAA

112ms

HTTPS

117ms

TLSA

1211ms

SOA

0ms

MTA-STS

151ms

DNSSEC

170ms

SRV

148ms

Total

2081ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-01 07:36:29	625ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-26 02:23:05	654ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-20 21:21:19	1165ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-29 16:08:09	915ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-27 02:11:19	928ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-06 23:23:46 shown	2081ms	2 NS 2 A 1 MX	🔓 Insecure
2026-07-21 17:01:42	1543ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-17 14:19:58	3345ms	2 NS 2 A 0 MX	🔓 Insecure