b2b-byg.dk

📜 Historical scan 2026-07-20 09:49:32 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

b2b-byg.dk is a .dk domain served by 2 nameservers (roxy.ns.cloudflare.com, woz.ns.cloudflare.com). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.22.35 is hosted by Cloudflare, Inc. (AS13335). 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 53ms

Nameserver	IP addresses	PTR	ASN / ISP
roxy.ns.cloudflare.com	108.162.192.142 172.64.32.142 173.245.58.142 2606:4700:50::adf5:3a8e 2803:f800:50::6ca2:c08e 2a06:98c1:50::ac40:208e	roxy.ns.cloudflare.com roxy.ns.cloudflare.com roxy.ns.cloudflare.com roxy.ns.cloudflare.com roxy.ns.cloudflare.com roxy.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
woz.ns.cloudflare.com	108.162.193.150 172.64.33.150 173.245.59.150 2606:4700:58::adf5:3b96 2803:f800:50::6ca2:c196 2a06:98c1:50::ac40:2196	woz.ns.cloudflare.com woz.ns.cloudflare.com woz.ns.cloudflare.com woz.ns.cloudflare.com woz.ns.cloudflare.com woz.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 43ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.22.35	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.202.59	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

📧

No MX records found

🔷 AAAA Records (IPv6)#

2 records 45ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3036::6815:1623	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3037::ac43:ca3b	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 44ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.22.35,172.67.202.59 ech=AEX+DQBBnAAgACAWiO6YIpf77bBefbfvWk8jq33MChipBe762fESqnhPAgAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3036::6815:1623,2606:4700:3037::ac43:ca3b

📝 TXT Records#

1 records 171ms

TXT Record
v=spf1 ip4:91.200.184.0/22 a mx ptr ~all

✉️ SPF#

Policy	Record (b2b-byg.dk)
~all (soft fail)	v=spf1 ip4:91.200.184.0/22 a mx ptr ~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 20:06:43

www	104.21.22.35 172.67.202.59 2606:4700:3036::6815:1623 2606:4700:3037::ac43:ca3b (AS13335) (address records, no CNAME)
www vs bare domain	Same network b2b-byg.dk: 104.21.22.35 172.67.202.59 2606:4700:3036::6815:1623 2606:4700:3037::ac43:ca3b (AS13335) www.b2b-byg.dk: 104.21.22.35 172.67.202.59 2606:4700:3036::6815:1623 2606:4700:3037::ac43:ca3b (AS13335)
Wildcard	No

🔎 SPF check#

zone-wide SPF report

DNS lookups: 3/10 · policy: ~all

warn "ptr" is slow, unreliable and discouraged (RFC 7208 §5.5)

🔗 TLSA / DANE#

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

🔐 DNSSEC#

136ms

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	2409927351
Primary NS (MNAME)	roxy.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#

53ms

43ms

65ms

AAAA

45ms

TXT

171ms

CAA

37ms

HTTPS

44ms

TLSA

8078ms

SOA

0ms

MTA-STS

71ms

DNSSEC

136ms

SRV

88ms

Total

18270ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-08 20:06:43	3272ms	2 NS 2 A 0 MX	🔓 Insecure
2026-09-24 18:08:14	9439ms	2 NS 2 A 0 MX	🔓 Insecure
2026-09-19 00:04:19	617ms	2 NS 2 A 0 MX	🔓 Insecure
2026-09-16 23:48:58	1070ms	2 NS 2 A 0 MX	🔓 Insecure
2026-08-27 22:34:14	652ms	2 NS 2 A 0 MX	🔓 Insecure
2026-08-26 10:29:39	9540ms	2 NS 2 A 0 MX	🔓 Insecure
2026-08-10 17:23:05	2933ms	2 NS 2 A 0 MX	🔓 Insecure
2026-07-20 09:49:32 shown	18270ms	2 NS 2 A 0 MX	🔓 Insecure
2026-06-16 13:57:14	467ms	2 NS 2 A 0 MX	🔓 Insecure