sprogbyggerne.dk

📜 Historical scan 2026-10-13 03:21:00  ·  ← 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   29ms
NameserverIP addressesPTRASN / 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   27ms
IPTTLPTRASNISP / OrgCIDRCountryCity
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   30ms
PriorityTTLMail ServerIP addressesPTRASN
0 3600s mail.sprogbyggerne.dk 185.113.11.10 lambda.hostup.se AS214640 Hostup AB

🔷 AAAA Records (IPv6)#

2 records   40ms
IPv6 AddressTTLPTRASNISP / OrgCIDRCountryCity
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   27ms
PriorityTargetSvcParams
1 service . alpn="h3,h2" ipv4hint=104.21.89.38,172.67.137.75 ech=AEX+DQBBgAAgACDgeChCkn+J6Oo0iZ7W/GPcXQ3pCqi6iHkNcrnfGeINTwAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3035::6815:5926,2606:4700:3037::ac43:894b

📝 TXT Records#

1 records   174ms
TXT Record
v=spf1 mx include:spf.hostup.se ~all

✉️ SPF#

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

📨 DMARC#

PolicyRecord (_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
www104.21.89.38 172.67.137.75 2606:4700:3035::6815:5926 2606:4700:3037::ac43:894b (AS13335) (address records, no CNAME)
www vs bare domainSame network
WildcardNo
Denial of existenceCompact NSEC (RFC 9824, "black lies") not walkable
CDS / CDNSKEYPublished: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY

✍️ DKIM keys#

1 found
SelectorCNAMEKey
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#

67ms
CheckResult
Validation Status🔓 Insecure
AD Flag (resolver validates)✗ Not set
DS Record✗ Not found
DNSKEY Record✓ Found
Flagsunsigned answer

🏷️ SOA#

39ms
FieldValue
Serial2417338698
Primary NS (MNAME)primary.ns.hostup.se
Responsible (RNAME)dns@cloudflare.com
Refresh10000s
Retry2400s
Expire604800s
Minimum (neg-cache TTL)1800s

📋 Registration#

WHOIS fetched 2026-10-20 21:34:45
FieldValue
RegistrarInterNetX GmbH
Registered2022-03-15
Expires2027-03-14 (139d)

🔗 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#

NS
29ms
A
27ms
MX
30ms
AAAA
40ms
TXT
174ms
CAA
37ms
HTTPS
27ms
TLSA
81ms
SOA
39ms
MTA-STS
39ms
DNSSEC
67ms
SRV
68ms
Total
604ms

🕐 Scan History#

Scanned AtDurationRecordsDNSSEC
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 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 shown 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
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