sprogbyggerne.dk

📜 Historical scan 2026-10-20 21:01:19 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

sprogbyggerne.dk is a .dk domain served by 2 nameservers (primary.ns.hostup.se, secondary.ns.hostup.se). It was registered on 15 March 2022 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.89.38 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by mail.sprogbyggerne.dk. 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 65ms

Nameserver	IP addresses	PTR	ASN / ISP
primary.ns.hostup.se	198.41.222.135 2400:cb00:2049:1::c629:de87	cf-198-41-222-135.cloudflare.com —	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
secondary.ns.hostup.se	162.159.8.163 2400:cb00:2049:1::a29f:8a3	— —	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records#

2 records 64ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.89.38	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.137.75	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

1 records 68ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	mail.sprogbyggerne.dk	185.113.11.10	lambda.hostup.se	AS214640 Hostup AB

🔷 AAAA Records (IPv6)#

2 records 66ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3035::6815:5926	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3037::ac43:894b	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 75ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.89.38,172.67.137.75 ech=AEX+DQBBtgAgACBmYfZTuVa1ZjDJT7QDKufAS0k/nqw9OtZvYgGVZ9m8bwAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3035::6815:5926,2606:4700:3037::ac43:894b

📝 TXT Records#

1 records 297ms

TXT Record
v=spf1 mx include:spf.hostup.se ~all

✉️ SPF#

Policy	Record (sprogbyggerne.dk)
~all (soft fail)	v=spf1 mx include:spf.hostup.se ~all

📨 DMARC#

Policy	Record (_dmarc.sprogbyggerne.dk)
p=none (monitor only)	v=DMARC1; p=none;

📬 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 2026-10-24 20:47:26

www	104.21.89.38 172.67.137.75 2606:4700:3035::6815:5926 2606:4700:3037::ac43:894b (AS13335) (address records, no CNAME)
www vs bare domain	Same network sprogbyggerne.dk: 104.21.89.38 172.67.137.75 2606:4700:3035::6815:5926 2606:4700:3037::ac43:894b (AS13335) www.sprogbyggerne.dk: 104.21.89.38 172.67.137.75 2606:4700:3035::6815:5926 2606:4700:3037::ac43:894b (AS13335)
Wildcard	No
Denial of existence	Compact NSEC (RFC 9824, "black lies") not walkable
CDS / CDNSKEY	Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY

✍️ DKIM keys#

1 found

Selector	CNAME	Key
default	—	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: 2/10 · policy: ~all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

191ms

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

🏷️ SOA#

117ms

Field	Value
Serial	2417943593
Primary NS (MNAME)	primary.ns.hostup.se
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-20 21:34:45

Field	Value
Registrar	InterNetX GmbH
Registered	2022-03-15
Expires	2027-03-14 (140d)

🔗 Same registrant#

0 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).

No other domain with this registrant in our WHOIS data yet

📋 WHOIS#

⏱️ Lookup Timing#

65ms

64ms

68ms

AAAA

66ms

TXT

297ms

CAA

87ms

HTTPS

75ms

TLSA

142ms

SOA

117ms

MTA-STS

117ms

DNSSEC

191ms

SRV

131ms

Total

1220ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-24 20:47:26	518ms	2 NS 2 A 1 MX	🔓 Insecure
2026-10-23 19:43:44	1187ms	2 NS 2 A 1 MX	🔓 Insecure
2026-10-21 23:03:37	592ms	2 NS 2 A 1 MX	🔓 Insecure
2026-10-20 21:01:19 shown	1220ms	2 NS 2 A 1 MX	🔓 Insecure
2026-10-19 09:03:22	558ms	2 NS 2 A 1 MX	🔓 Insecure
2026-10-18 08:46:21	3846ms	2 NS 2 A 1 MX	🔓 Insecure
2026-10-17 08:25:33	1566ms	2 NS 2 A 1 MX	🔓 Insecure
2026-10-17 07:55:14	1343ms	2 NS 2 A 1 MX	🔓 Insecure
2026-10-16 06:22:19	1278ms	2 NS 2 A 1 MX	🔓 Insecure
2026-10-15 05:46:47	1239ms	2 NS 2 A 1 MX	🔓 Insecure
2026-10-14 04:17:52	1789ms	2 NS 2 A 1 MX	🔓 Insecure
2026-10-13 03:21:00	604ms	2 NS 2 A 1 MX	🔓 Insecure
2026-10-10 23:04:00	1993ms	2 NS 2 A 1 MX	🔓 Insecure
2026-10-09 19:53:50	6430ms	2 NS 2 A 1 MX	🔓 Insecure
2026-10-07 16:50:26	731ms	2 NS 2 A 1 MX	🔓 Insecure
2026-10-07 12:37:53	1739ms	2 NS 2 A 1 MX	🔓 Insecure
2026-10-06 01:59:59	693ms	2 NS 2 A 1 MX	🔓 Insecure
2026-10-05 01:51:59	657ms	2 NS 2 A 1 MX	🔓 Insecure
2026-10-04 01:41:51	2789ms	2 NS 2 A 1 MX	🔓 Insecure
2026-10-03 01:36:34	778ms	2 NS 2 A 1 MX	🔓 Insecure
2026-10-02 01:31:32	540ms	2 NS 2 A 1 MX	🔓 Insecure
2026-10-01 01:09:00	1004ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-30 12:14:00	1489ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-29 12:05:19	773ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-28 11:52:29	749ms	2 NS 2 A 1 MX	🔓 Insecure