optimalt-byg.dk

📜 Historical scan 2026-08-26 05:14:41 · ← 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 104.21.94.61 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 64ms

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 68ms

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

📧 MX Records#

3 records 110ms

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 63ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3032::ac43:dc50	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3035::6815:5e3d	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 103ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.94.61,172.67.220.80 ech=AEX+DQBBiAAgACDwEbMk+V5vxoyLyunYXrpfvE4B481DgeXXk7G8UqFZDgAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3032::ac43:dc50,2606:4700:3035::6815:5e3d

📝 TXT Records#

1 records 255ms

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 218ms

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-EE · SPKI · SHA-256	9BE5B7D47F9EFF930C11EB04D27CAE6B…
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.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#

190ms

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	2413149665
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#

64ms

68ms

110ms

AAAA

63ms

TXT

255ms

CAA

83ms

HTTPS

103ms

TLSA

218ms

SOA

0ms

MTA-STS

102ms

DNSSEC

190ms

SRV

125ms

Total

1568ms

🕐 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	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 shown	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