bookstudenterkorsel.dk

📜 Historical scan 2026-07-02 00:56:45  ·  ← Latest scan
⬇ Zone File 📜 Timeline & History ⚡ Scan Now

bookstudenterkorsel.dk is a .dk domain served by 2 nameservers (karina.ns.cloudflare.com, paul.ns.cloudflare.com). It was registered on 26 April 2013 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.48.162 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by mx.simply.com. 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   32ms
NameserverIP addressesPTRASN / ISP
karina.ns.cloudflare.com 108.162.192.178
172.64.32.178
173.245.58.178
2606:4700:50::adf5:3ab2
2803:f800:50::6ca2:c0b2
2a06:98c1:50::ac40:20b2		 karina.ns.cloudflare.com
karina.ns.cloudflare.com
karina.ns.cloudflare.com
karina.ns.cloudflare.com
karina.ns.cloudflare.com
karina.ns.cloudflare.com		 AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
paul.ns.cloudflare.com 108.162.193.135
172.64.33.135
173.245.59.135
2606:4700:58::adf5:3b87
2803:f800:50::6ca2:c187
2a06:98c1:50::ac40:2187		 paul.ns.cloudflare.com
paul.ns.cloudflare.com
paul.ns.cloudflare.com
paul.ns.cloudflare.com
paul.ns.cloudflare.com
paul.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   37ms
IPTTLPTRASNISP / OrgCIDRCountryCity
104.21.48.162 300s — AS13335 Cloudflare, Inc. 104.21.0.0/17 — —
172.67.154.86 300s — AS13335 Cloudflare, Inc. 172.67.128.0/17 — —

📧 MX Records#

1 records   50ms
PriorityTTLMail ServerIP addressesPTRASN
10 300s mx.simply.com 94.231.106.20 mx.simply.com AS48854 team.blue Denmark A/S

📧 Autodiscover / Autoconfig#

ServiceCNAME / IP
🔷 Autodiscover104.21.48.162
🔶 Autoconfigmaildiscover.simply.com → 94.231.108.222

🔷 AAAA Records (IPv6)#

2 records   39ms
IPv6 AddressTTLPTRASNISP / OrgCIDRCountryCity
2606:4700:3035::6815:30a2 300s — AS13335 Cloudflare, Inc. 2606:4700:3000:0:0:0:0:0/42 — —
2606:4700:3037::ac43:9a56 300s — AS13335 Cloudflare, Inc. 2606:4700:3000:0:0:0:0:0/42 — —

🔐 HTTPS Records#

1 records   34ms
PriorityTargetSvcParams
1 service . alpn="h3,h2" ipv4hint=104.21.48.162,172.67.154.86 ech=AEX+DQBBbQAgACDRh8EBBYsg5gKR/MjDbn7NihoT9MYyzy/BWffmjeQMZwAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3035::6815:30a2,2606:4700:3037::ac43:9a56

📝 TXT Records#

5 records   217ms
TXT Record
brevo-code:19bc4bd23ad7ab24077b74df7ff5c500
brevo-code:41a15b9de568d3ed295cc6f800c571ac
facebook-domain-verification=eacq6ljv1nnqhxqg1y9l2terr0w7t9
google-site-verification=h2B5Ju7OaI4SwPIg1c5_DOFVgRv83vlfE-BP2N26Hvo
v=spf1 include:spf.simply.com include:emsd1.com include:_spf.google.com include:emsd1.com ~all

✉️ SPF#

PolicyRecord (bookstudenterkorsel.dk)
~all (soft fail) v=spf1 include:spf.simply.com include:emsd1.com include:_spf.google.com include:emsd1.com ~all

📨 DMARC#

PolicyRecord (_dmarc.bookstudenterkorsel.dk)
p=none (monitor only) v=DMARC1; p=none; pct=100; rua=mailto:reports@youngunite.dk; aspf=r

📬 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 17:44:07
www104.21.48.162 172.67.154.86 2606:4700:3035::6815:30a2 2606:4700:3037::ac43:9a56 (AS13335) (address records, no CNAME)
www vs bare domainSame network
WildcardYes: any name under the zone resolves

✍️ DKIM keys#

1 found
SelectorCNAMEKey
mail — RSA · ~1024 bit below 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: 4/10 · policy: ~all

No problems found

🔏 ACME Challenge#

TypeNameValue
CNAME _acme-challenge.bookstudenterkorsel.dk phpstack-262570-816542.cloudwaysapps.com

🔗 TLSA / DANE#

2 records   55ms
Service / OwnerTypeCert association
SMTP _25._tcp.mx.simply.com DANE-EE · SPKI · SHA-256 A9D603AF4D7ED6B9246B4B68500CD6F2…
SMTP _25._tcp.mx.simply.com DANE-EE · SPKI · SHA-256 97A3BA009F39C761BFFB6574340E8138…

🔐 DNSSEC#

59ms
CheckResult
Validation Status🔓 Insecure
AD Flag (resolver validates)✗ Not set
DS Record✗ Not found
DNSKEY Record✗ Not found
Flagsunsigned answer

🏷️ SOA#

29ms
FieldValue
Serial2405909058
Primary NS (MNAME)karina.ns.cloudflare.com
Responsible (RNAME)dns@cloudflare.com
Refresh10000s
Retry2400s
Expire604800s
Minimum (neg-cache TTL)1800s

📋 Registration#

WHOIS fetched 2026-10-07 01:46:01
FieldValue
RegistrarSimply.com A/S
Registered2013-04-26
Expires2027-04-30 (193d)
📋 WHOIS#

⏱️ Lookup Timing#

NS
32ms
A
37ms
MX
50ms
AAAA
39ms
TXT
217ms
CAA
42ms
HTTPS
34ms
TLSA
55ms
SOA
29ms
MTA-STS
49ms
DNSSEC
59ms
SRV
56ms
Total
917ms

🕐 Scan History#

Scanned AtDurationRecordsDNSSEC
2026-10-07 01:25:04 507ms 2 NS 2 A 1 MX 🔓 Insecure
2026-09-30 23:27:05 811ms 2 NS 2 A 1 MX 🔓 Insecure
2026-09-29 04:12:54 2379ms 2 NS 2 A 1 MX 🔓 Insecure
2026-09-13 15:45:51 1959ms 2 NS 2 A 1 MX 🔓 Insecure
2026-08-06 00:46:08 1154ms 2 NS 2 A 1 MX 🔓 Insecure
2026-08-01 08:54:45 943ms 2 NS 2 A 1 MX 🔓 Insecure
2026-07-02 00:56:45 shown 917ms 2 NS 2 A 1 MX 🔓 Insecure
2026-06-16 16:11:47 2536ms 2 NS 2 A 1 MX 🔓 Insecure
2026-06-16 16:07:54 1695ms 2 NS 2 A 1 MX 🔓 Insecure
2026-06-16 16:01:06 670ms 2 NS 2 A 1 MX 🔓 Insecure
2026-06-16 16:00:59 473ms 2 NS 2 A 1 MX 🔓 Insecure
dhd.dk [/] search Domains, Hosts & DNS — .dk zone