b2b-byg.dk

📜 Historical scan 2026-06-16 13:57:14 · ← 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 42ms

Nameserver	IP addresses	PTR	ASN / ISP
roxy.ns.cloudflare.com	—	—	—
woz.ns.cloudflare.com	—	—	—

🌍 A Records#

2 records 42ms

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

📧 MX Records#

📧

No MX records found

🔷 AAAA Records (IPv6)#

2 records 40ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3035::6815:1623	—	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3035::ac43:ca3b	—	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 45ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.22.35,172.67.202.59 ech=AEX+DQBBlwAgACA41AMgc1sbai2CoOVhilCbC1JktSaHjQMIOv4l671bLwAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3035::6815:1623,2606:4700:3035::ac43:ca3b

📝 TXT Records#

1 records 115ms

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#

127ms

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

🏷️ SOA#

39ms

Field	Value
Serial	2406715253
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#

42ms

AAAA

40ms

TXT

115ms

CAA

46ms

HTTPS

45ms

TLSA

62ms

SOA

39ms

MTA-STS

64ms

DNSSEC

127ms

SRV

0ms

Total

467ms

🕐 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	18270ms	2 NS 2 A 0 MX	🔓 Insecure
2026-06-16 13:57:14 shown	467ms	2 NS 2 A 0 MX	🔓 Insecure