byggetilbud.dk

📜 Historical scan 2026-09-06 01:44:43 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

byggetilbud.dk is a .dk domain served by 2 nameservers (pat.ns.cloudflare.com, quincy.ns.cloudflare.com). It was registered on 11 September 2004 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.40.251 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by aspmx.l.google.com, alt1.aspmx.l.google.com and 3 more. 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 126ms

Nameserver	IP addresses	PTR	ASN / ISP
pat.ns.cloudflare.com	108.162.192.139 172.64.32.139 173.245.58.139 2606:4700:50::adf5:3a8b 2803:f800:50::6ca2:c08b 2a06:98c1:50::ac40:208b	pat.ns.cloudflare.com pat.ns.cloudflare.com pat.ns.cloudflare.com pat.ns.cloudflare.com pat.ns.cloudflare.com pat.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
quincy.ns.cloudflare.com	108.162.195.39 162.159.44.39 172.64.35.39 2606:4700:58::a29f:2c27 2803:f800:50::6ca2:c327 2a06:98c1:50::ac40:2327	quincy.ns.cloudflare.com quincy.ns.cloudflare.com quincy.ns.cloudflare.com quincy.ns.cloudflare.com quincy.ns.cloudflare.com quincy.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 97ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.40.251	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.158.146	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

5 records 113ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
1	300s	aspmx.l.google.com	142.251.9.27 2a00:1450:4025:c01::1a	rc-in-f27.1e100.net rd-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC
5	300s	alt1.aspmx.l.google.com	192.178.211.27 2404:6800:4000:1025::1a	lcbomp-in-f27.1e100.net lcbomp-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC
5	300s	alt2.aspmx.l.google.com	192.178.158.26 2404:6800:4013:813::1a	lcdels-in-f26.1e100.net lcdels-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC
10	300s	aspmx2.googlemail.com	192.178.211.26 2404:6800:4000:1025::1b	lcbomp-in-f26.1e100.net lcbomp-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC
10	300s	aspmx3.googlemail.com	192.178.158.26 2404:6800:4013:813::1b	lcdels-in-f26.1e100.net lcdels-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	104.21.40.251
🔶 Autoconfig	104.21.40.251

🔷 AAAA Records (IPv6)#

2 records 158ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3035::6815:28fb	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3036::ac43:9e92	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 63ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.40.251,172.67.158.146 ech=AEX+DQBBvAAgACBiNFz0YuVBycIIkI5YFGG/kG+lNKJJpFmoYCpm4hZAMQAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3035::6815:28fb,2606:4700:3036::ac43:9e92

📝 TXT Records#

3 records 235ms

TXT Record
google-site-verification=YU87qHnBT5NDjXNcztBT6rmji_yXTr_NW2UXVQxn0YY
v=spf1 include:_spf.google.com ip4:185.121.173.206 ip4:185.121.173.207 ~all
v=spf1 ip4:185.121.173.206 include:_spf.google.com ~all

✉️ SPF#

⚠ Multiple SPF records — RFC 7208 §4.5 violation (receivers must treat this as permerror)

Policy	Record (byggetilbud.dk)
~all (soft fail)	v=spf1 include:_spf.google.com ip4:185.121.173.206 ip4:185.121.173.207 ~all
~all (soft fail)	v=spf1 ip4:185.121.173.206 include:_spf.google.com ~all

📨 DMARC#

Policy	Record (_dmarc.byggetilbud.dk)
p=none (monitor only)	v=DMARC1; p=none; rua=mailto:4469b6320e6747beaa398a09c0e05104@dmarc-reports.cloudflare.net

📬 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 2026-10-14 05:37:41

www	104.21.40.251 172.67.158.146 2606:4700:3035::6815:28fb 2606:4700:3036::ac43:9e92 (AS13335) (address records, no CNAME)
www vs bare domain	Same network byggetilbud.dk: 104.21.40.251 172.67.158.146 2606:4700:3035::6815:28fb 2606:4700:3036::ac43:9e92 (AS13335) www.byggetilbud.dk: 104.21.40.251 172.67.158.146 2606:4700:3035::6815:28fb 2606:4700:3036::ac43:9e92 (AS13335)
Wildcard	Yes: any name under the zone resolves

✍️ DKIM keys#

1 found

Selector	CNAME	Key
google	—	RSA · ~2048 bit

DKIM selectors can't be listed, so we check the common ones (Microsoft 365, Google, Mailchimp, SendGrid, generic). Keys under other selectors aren't shown.

🔎 SPF check#

zone-wide SPF report

DNS lookups: 1/10 · policy: ~all

error 2 SPF records: receivers must treat that as a permanent error (RFC 7208 §4.5)

🔗 TLSA / DANE#

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

🔐 DNSSEC#

162ms

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	2413964870
Primary NS (MNAME)	pat.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-16 06:07:58

Field	Value
Registrar	Simply.com A/S
Registered	2004-09-11
Expires	2032-09-30 (2165d)

🔗 Same registrant#

3 domains

Other .dk domains whose WHOIS registrant has the same name and postal address. Matched on a keyed hash: the registrant's details are not stored or shown. Covers only domains whose WHOIS we have fetched (refreshed about monthly).

Domain	Registrar
autotilbud.dk	Simply.com A/S
boligtilbud.dk	Punktum dk A/S (direct)
hentpriser.dk	Punktum dk A/S (direct)

📋 WHOIS#

⏱️ Lookup Timing#

126ms

97ms

113ms

AAAA

158ms

TXT

235ms

CAA

99ms

HTTPS

63ms

TLSA

584ms

SOA

0ms

MTA-STS

102ms

DNSSEC

162ms

SRV

149ms

Total

1974ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-09-27 11:50:25	812ms	2 NS 2 A 5 MX	🔓 Insecure
2026-09-06 01:44:43 shown	1974ms	2 NS 2 A 5 MX	🔓 Insecure
2026-07-06 21:24:33	2816ms	2 NS 2 A 5 MX	🔓 Insecure
2026-07-02 12:25:25	1670ms	2 NS 2 A 5 MX	🔓 Insecure
2026-06-22 23:28:05	1193ms	2 NS 2 A 5 MX	🔓 Insecure
2026-06-21 22:39:27	1192ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-16 18:15:40	713ms	2 NS 2 A 5 MX	🔓 Insecure