matematikbogen.dk

Records from scan: 2026-10-13 14:04:32  ·  3118ms total  ·  last checked 2026-10-20 21:10 (unchanged)
⬇ Zone File 📜 Timeline & History ⚡ Scan Now

matematikbogen.dk is a .dk domain served by 2 nameservers (daisy.ns.cloudflare.com, mark.ns.cloudflare.com). It was registered on 28 November 2000 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.71.104 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by aspmx.l.google.com, alt1.aspmx.l.google.com and 5 more. The zone is not DNSSEC-signed, has no 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   233ms
NameserverIP addressesPTRASN / ISP
daisy.ns.cloudflare.com 108.162.192.90
172.64.32.90
173.245.58.90
2606:4700:50::adf5:3a5a
2803:f800:50::6ca2:c05a
2a06:98c1:50::ac40:205a		 daisy.ns.cloudflare.com
daisy.ns.cloudflare.com
daisy.ns.cloudflare.com
daisy.ns.cloudflare.com
daisy.ns.cloudflare.com
daisy.ns.cloudflare.com		 AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
mark.ns.cloudflare.com 108.162.193.130
172.64.33.130
173.245.59.130
2606:4700:58::adf5:3b82
2803:f800:50::6ca2:c182
2a06:98c1:50::ac40:2182		 mark.ns.cloudflare.com
mark.ns.cloudflare.com
mark.ns.cloudflare.com
mark.ns.cloudflare.com
mark.ns.cloudflare.com
mark.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   243ms
IPTTLPTRASNISP / OrgCIDRCountryCity
104.21.71.104 300s — AS13335 Cloudflare, Inc. 104.21.0.0/17 — —
172.67.144.100 300s — AS13335 Cloudflare, Inc. 172.67.128.0/17 — —

📧 MX Records#

7 records   191ms
PriorityTTLMail ServerIP addressesPTRASN
10 300s aspmx.l.google.com 142.251.173.27
2a00:1450:4001:c21::1b		 wi-in-f27.1e100.net
lcfrai-in-f27.1e100.net		 AS15169 Google LLC
AS15169 Google LLC
20 300s alt1.aspmx.l.google.com 192.178.213.26
2a00:1450:4025:c01::1b		 yugrqzs-in-f26.1e100.net
rd-in-f27.1e100.net		 AS15169 Google LLC
AS15169 Google LLC
20 300s alt2.aspmx.l.google.com 142.251.127.27
2a00:1450:4001:c21::1b		 lcfrai-in-f27.1e100.net
lcfrai-in-f27.1e100.net		 AS15169 Google LLC
AS15169 Google LLC
30 300s aspmx2.googlemail.com 142.250.147.27
2a00:1450:4025:c01::1b		 rd-in-f27.1e100.net
rd-in-f27.1e100.net		 AS15169 Google LLC
AS15169 Google LLC
30 300s aspmx3.googlemail.com 172.253.152.27
2a00:1450:4010:c22::1a		 yulpptr-in-f27.1e100.net
yulpptr-in-f26.1e100.net		 AS15169 Google LLC
AS15169 Google LLC
30 300s aspmx4.googlemail.com 192.179.20.27
2404:6800:4000:1027::1b		 ncboms-in-f27.1e100.net
ncboms-in-f27.1e100.net		 AS15169 Google LLC
AS15169 Google LLC
30 300s aspmx5.googlemail.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

🔷 AAAA Records (IPv6)#

2 records   251ms
IPv6 AddressTTLPTRASNISP / OrgCIDRCountryCity
2606:4700:3032::6815:4768 300s — AS13335 Cloudflare, Inc. 2606:4700:3000:0:0:0:0:0/42 — —
2606:4700:3035::ac43:9064 300s — AS13335 Cloudflare, Inc. 2606:4700:3000:0:0:0:0:0/42 — —

🔐 HTTPS Records#

1 records   247ms
PriorityTargetSvcParams
1 service . alpn="h3,h2" ipv4hint=104.21.71.104,172.67.144.100 ech=AEX+DQBBywAgACBLJ9oE24G/gTdqj/JOoX51JSfs+fTYGhhke4z8bYF8LQAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3032::6815:4768,2606:4700:3035::ac43:9064

📝 TXT Records#

1 records   435ms
TXT Record
google-site-verification=Y_lHHPh_5tSiHgaP-cvA00aMTvV_RXxl8eBc3KA3TbM

✉️ SPF#

✗ No SPF record — mail spoofing not restricted

📨 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#

checked 2026-10-13 14:04:32
www104.21.71.104 172.67.144.100 2606:4700:3032::6815:4768 2606:4700:3035::ac43:9064 (AS13335) (address records, no CNAME)
www vs bare domainSame network
WildcardNo

🔗 TLSA / DANE#

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

🔐 DNSSEC#

341ms
CheckResult
Validation Status🔓 Insecure
AD Flag (resolver validates)✗ Not set
DS Record✗ Not found
DNSKEY Record✗ Not found
Flagsunsigned answer

🏷️ SOA#

80ms
FieldValue
Serial2417370610
Primary NS (MNAME)daisy.ns.cloudflare.com
Responsible (RNAME)dns@cloudflare.com
Refresh10000s
Retry2400s
Expire604800s
Minimum (neg-cache TTL)1800s

📋 Registration#

WHOIS fetched 2026-10-20 15:28:21
FieldValue
RegistrarPunktum dk A/S (direct)
Registered2000-11-28
Expires2026-12-31 (70d)

🔗 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
233ms
A
243ms
MX
191ms
AAAA
251ms
TXT
435ms
CAA
202ms
HTTPS
247ms
TLSA
616ms
SOA
80ms
MTA-STS
270ms
DNSSEC
341ms
SRV
267ms
Total
3118ms

🕐 Scan History#

Scanned AtDurationRecordsDNSSEC
2026-10-13 14:04:32 shown 3118ms 2 NS 2 A 7 MX 🔓 Insecure
2026-09-29 01:40:49 1052ms 2 NS 2 A 7 MX 🔓 Insecure
2026-09-16 08:01:25 3281ms 2 NS 2 A 7 MX 🔓 Insecure
2026-09-09 22:16:04 2612ms 2 NS 2 A 7 MX 🔓 Insecure
2026-08-28 23:04:11 2480ms 2 NS 2 A 7 MX 🔓 Insecure
2026-08-07 14:15:51 2189ms 2 NS 2 A 7 MX 🔓 Insecure
2026-07-03 12:44:37 1123ms 2 NS 2 A 7 MX 🔓 Insecure
2026-06-24 15:52:43 2417ms 2 NS 2 A 7 MX 🔓 Insecure
2026-06-20 08:16:08 728ms 2 NS 2 A 7 MX 🔓 Insecure
2026-06-17 23:29:08 1159ms 2 NS 2 A 7 MX 🔓 Insecure
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