optimalt-byg.dk

📜 Historical scan 2026-09-07 21:15:27 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

optimalt-byg.dk is a .dk domain served by 2 nameservers (boyd.ns.cloudflare.com, irena.ns.cloudflare.com). It was registered on 22 June 2026 (WHOIS) and first appeared in the .dk zone on 23 June 2026. Its website address 172.67.220.80 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by route2.mx.cloudflare.net, route1.mx.cloudflare.net and 1 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 44ms

Nameserver	IP addresses	PTR	ASN / ISP
boyd.ns.cloudflare.com	108.162.193.75 172.64.33.75 173.245.59.75 2606:4700:58::adf5:3b4b 2803:f800:50::6ca2:c14b 2a06:98c1:50::ac40:214b	boyd.ns.cloudflare.com boyd.ns.cloudflare.com boyd.ns.cloudflare.com boyd.ns.cloudflare.com boyd.ns.cloudflare.com boyd.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
irena.ns.cloudflare.com	108.162.194.79 162.159.38.79 172.64.34.79 2606:4700:50::a29f:264f 2803:f800:50::6ca2:c24f 2a06:98c1:50::ac40:224f	irena.ns.cloudflare.com irena.ns.cloudflare.com irena.ns.cloudflare.com irena.ns.cloudflare.com irena.ns.cloudflare.com irena.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 55ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
172.67.220.80	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—
104.21.94.61	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—

📧 MX Records#

3 records 9ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
53	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.
58	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.
67	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 9ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3035::6815:5e3d	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000::/42	—	—
2606:4700:3032::ac43:dc50	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000::/42	—	—

🔐 HTTPS Records#

1 records 154ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=188.114.96.0,188.114.97.0 ech=AEX+DQBBNwAgACBgZwjyg4aaEczydISesWS+IU0ai1bD29Rtdp1Mj8NDEQAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2a06:98c1:3120::,2a06:98c1:3121::

📝 TXT Records#

1 records 41ms

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

✉️ SPF#

Policy	Record (optimalt-byg.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 2026-10-08 00:46:24

www	104.21.94.61 172.67.220.80 2606:4700:3032::ac43:dc50 2606:4700:3035::6815:5e3d (AS13335) (address records, no CNAME)
www vs bare domain	Same network optimalt-byg.dk: 104.21.94.61 172.67.220.80 2606:4700:3032::ac43:dc50 2606:4700:3035::6815:5e3d (AS13335) www.optimalt-byg.dk: 104.21.94.61 172.67.220.80 2606:4700:3032::ac43:dc50 2606:4700:3035::6815:5e3d (AS13335)
Wildcard	No

🔎 SPF check#

zone-wide SPF report

DNS lookups: 1/10 · policy: ~all

No problems found

🔗 TLSA / DANE#

9 records 193ms

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-EE · SPKI · SHA-256	0F0C6C164A36F97E7B4C5A5B69D6F4F2…
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-EE · SPKI · SHA-256	0F0C6C164A36F97E7B4C5A5B69D6F4F2…
SMTP _25._tcp.route3.mx.cloudflare.net	DANE-TA · SPKI · SHA-256	59E738E674221702AF1EDB87C5200C1A…

🔐 DNSSEC#

1404ms

Check	Result
Validation Status	🔓 Insecure
AD Flag (resolver validates)	✗ Not set
DS Record	✗ Not found
DNSKEY Record	✗ Not found
Flags	unsigned answer

🏷️ SOA#

7ms

Field	Value
Serial	2413241221
Primary NS (MNAME)	boyd.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 00:59:53

Field	Value
Registrar	Dynadot LLC
Registered	2026-06-22
Expires	2027-06-21 (245d)

📋 WHOIS#

⏱️ Lookup Timing#

44ms

55ms

9ms

AAAA

9ms

TXT

41ms

CAA

10ms

HTTPS

154ms

TLSA

193ms

SOA

7ms

MTA-STS

136ms

DNSSEC

1404ms

SRV

0ms

Total

4079ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-08 00:46:24	1148ms	2 NS 2 A 3 MX	🔓 Insecure
2026-09-23 19:29:53	834ms	2 NS 2 A 3 MX	🔓 Insecure
2026-09-07 21:15:27 shown	4079ms	2 NS 2 A 3 MX	🔓 Insecure
2026-09-03 21:53:06	830ms	2 NS 2 A 3 MX	🔓 Insecure
2026-08-27 05:16:03	1157ms	2 NS 2 A 3 MX	🔓 Insecure
2026-08-26 05:14:41	1568ms	2 NS 2 A 3 MX	🔓 Insecure
2026-08-21 18:50:42	2080ms	2 NS 2 A 3 MX	🔓 Insecure
2026-08-20 18:48:14	4238ms	2 NS 2 A 3 MX	🔓 Insecure
2026-07-23 09:53:03	10709ms	2 NS 2 A 3 MX	🔓 Insecure
2026-07-03 15:06:27	10163ms	2 NS 2 A 3 MX	🔓 Insecure
2026-06-23 08:35:56	1140ms	2 NS 2 A 3 MX	🔓 Insecure