studieboeger.dk

Records from scan: 2026-10-04 16:07:45  ·  991ms total  ·  last checked 2026-10-16 14:56 (unchanged)
⬇ Zone File 📜 Timeline & History ⚡ Scan Now

studieboeger.dk is a .dk domain served by 2 nameservers (fish.ns.cloudflare.com, pranab.ns.cloudflare.com). It was registered on 23 January 2024 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.15.245 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by mail.mahoje.dk, mx2.mahoje.dk. The zone is not DNSSEC-signed, publishes a DMARC policy and is reachable over IPv6. Below are all of its DNS records from our latest scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.

🖥️ Nameservers#

2 records   30ms
NameserverIP addressesPTRASN / ISP
fish.ns.cloudflare.com 108.162.194.252
162.159.38.252
172.64.34.252
2606:4700:50::a29f:26fc
2803:f800:50::6ca2:c2fc
2a06:98c1:50::ac40:22fc		 fish.ns.cloudflare.com
fish.ns.cloudflare.com
fish.ns.cloudflare.com
fish.ns.cloudflare.com
fish.ns.cloudflare.com
fish.ns.cloudflare.com		 AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
pranab.ns.cloudflare.com 108.162.195.199
162.159.44.199
172.64.35.199
2606:4700:58::a29f:2cc7
2803:f800:50::6ca2:c3c7
2a06:98c1:50::ac40:23c7		 pranab.ns.cloudflare.com
pranab.ns.cloudflare.com
pranab.ns.cloudflare.com
pranab.ns.cloudflare.com
pranab.ns.cloudflare.com
pranab.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   47ms
IPTTLPTRASNISP / OrgCIDRCountryCity
104.21.15.245 300s — AS13335 Cloudflare, Inc. 104.21.0.0/17 — —
172.67.165.85 300s — AS13335 Cloudflare, Inc. 172.67.128.0/17 — —

📧 MX Records#

2 records   48ms
PriorityTTLMail ServerIP addressesPTRASN
10 300s mail.mahoje.dk 89.167.70.15 mail.mahoje.dk AS24940 Hetzner Online GmbH
20 300s mx2.mahoje.dk 2a03:4000:6a:448:2808:cff:fe9a:1d5c
89.58.59.252		 mx2.mahoje.dk
mx2.mahoje.dk		 AS197540 netcup GmbH
AS197540 netcup GmbH

📧 Autodiscover / Autoconfig#

ServiceCNAME / IP
🔷 Autodiscovermail.mahoje.dk → 89.167.70.15
🔶 Autoconfigmail.mahoje.dk → 89.167.70.15

🔷 AAAA Records (IPv6)#

2 records   43ms
IPv6 AddressTTLPTRASNISP / OrgCIDRCountryCity
2606:4700:3031::6815:ff5 300s — AS13335 Cloudflare, Inc. 2606:4700:3000:0:0:0:0:0/42 — —
2606:4700:3035::ac43:a555 300s — AS13335 Cloudflare, Inc. 2606:4700:3000:0:0:0:0:0/42 — —

🔐 HTTPS Records#

1 records   38ms
PriorityTargetSvcParams
1 service . alpn="h3,h2" ipv4hint=104.21.15.245,172.67.165.85 ech=AEX+DQBBrwAgACB3V6T2X69/mCGQn8NhU8fkBpvDcuxha8C+xpuUHFRPGQAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3031::6815:ff5,2606:4700:3035::ac43:a555

🔌 SRV Records#

1 records   64ms
ServicePriorityWeightPortTarget
_imaps._tcp 0 1 993 mail.mahoje.dk

📝 TXT Records#

1 records   196ms
TXT Record
v=spf1 mx -all

✉️ SPF#

PolicyRecord (studieboeger.dk)
-all (hard fail) v=spf1 mx -all

📨 DMARC#

PolicyRecord (_dmarc.studieboeger.dk)
p=reject v=DMARC1; p=reject; rua=mailto:postmaster@studieboeger.dk

📬 MTA-STS#

222ms
CheckResult
Status🔒 Enforce
TXT record (_mta-sts)✓ Found
HTTPS policy✓ Valid
Modeenforce
Policy ID16987204137357589047
max_age604800s
Policy MXmail.mahoje.dk, mx2.mahoje.dk

📈 TLSRPT#

StatusReport address (rua)
✓ Enabled mailto:postmaster@studieboeger.dk

📜 CAA Records#

✗ No CAA records — any CA may issue certificates

🧩 Web & zone#

checked 2026-10-12 05:34:51
www104.21.15.245 172.67.165.85 2606:4700:3031::6815:ff5 2606:4700:3035::ac43:a555 (AS13335) (address records, no CNAME)
www vs bare domainSame network
WildcardYes: any name under the zone resolves

🔎 SPF check#

zone-wide SPF report

DNS lookups: 1/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

62ms
CheckResult
Validation Status🔓 Insecure
AD Flag (resolver validates)✗ Not set
DS Record✗ Not found
DNSKEY Record✗ Not found
Flagsunsigned answer

🏷️ SOA#

41ms
FieldValue
Serial2416525574
Primary NS (MNAME)fish.ns.cloudflare.com
Responsible (RNAME)dns@cloudflare.com
Refresh10000s
Retry2400s
Expire604800s
Minimum (neg-cache TTL)1800s

📋 Registration#

WHOIS fetched 2026-10-04 16:35:50
FieldValue
RegistrarPunktum dk A/S (direct)
Registered2024-01-23
Expires2027-01-22 (97d)
📋 WHOIS#

⏱️ Lookup Timing#

NS
30ms
A
47ms
MX
48ms
AAAA
43ms
TXT
196ms
CAA
38ms
HTTPS
38ms
TLSA
65ms
SOA
41ms
MTA-STS
222ms
DNSSEC
62ms
SRV
64ms
Total
991ms

🕐 Scan History#

Scanned AtDurationRecordsDNSSEC
2026-10-04 16:07:45 shown 991ms 2 NS 2 A 2 MX 🔓 Insecure
2026-10-03 16:05:31 1077ms 2 NS 2 A 2 MX 🔓 Insecure
2026-10-02 19:08:39 806ms 2 NS 2 A 1 MX 🔓 Insecure
2026-09-29 18:43:09 963ms 2 NS 2 A 1 MX 🔓 Insecure
2026-09-26 17:57:25 682ms 2 NS 2 A 1 MX 🔓 Insecure
2026-09-26 13:10:00 713ms 2 NS 2 A 1 MX 🔓 Insecure
2026-09-19 12:39:32 630ms 2 NS 2 A 1 MX 🔓 Insecure
2026-09-18 18:22:50 1900ms 2 NS 2 A 1 MX 🔓 Insecure
2026-09-11 15:24:39 1282ms 2 NS 2 A 1 MX 🔓 Insecure
2026-08-29 18:27:15 627ms 2 NS 2 A 1 MX 🔓 Insecure
2026-08-28 15:29:36 1636ms 2 NS 2 A 1 MX 🔓 Insecure
2026-08-23 01:26:15 1232ms 2 NS 2 A 1 MX 🔓 Insecure
2026-08-06 13:29:27 1254ms 2 NS 2 A 1 MX 🔓 Insecure
2026-07-22 07:31:32 17724ms 2 NS 2 A 1 MX 🔓 Insecure
2026-06-26 21:53:52 1082ms 2 NS 2 A 1 MX 🔓 Insecure
2026-06-21 17:54:42 880ms 2 NS 2 A 1 MX 🔓 Insecure
2026-06-18 05:39:40 788ms 2 NS 2 A 1 MX 🔓 Insecure
dhd.dk [/] search Domains, Hosts & DNS — .dk zone