bookstudenterkorsel.dk

📜 Historical scan 2026-06-16 16:01:06 · ← 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 80ms

Nameserver	IP addresses	PTR	ASN / ISP
karina.ns.cloudflare.com	—	—	—
paul.ns.cloudflare.com	—	—	—

🌍 A Records#

2 records 63ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.48.162	—	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.154.86	—	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

1 records 62ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	—	mx.simply.com	94.231.106.20	mx.simply.com	AS48854 team.blue Denmark A/S

🔷 AAAA Records (IPv6)#

2 records 81ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3035::6815:30a2	—	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3035::ac43:9a56	—	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 81ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.48.162,172.67.154.86 ech=AEX+DQBBdgAgACDwMdqHOich08t3ZLIr63XGzKBXh963Fm9Dq8c9t+DGZwAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3035::6815:30a2,2606:4700:3035::ac43:9a56

📝 TXT Records#

5 records 224ms

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#

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

📨 DMARC#

Policy	Record (_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

www	104.21.48.162 172.67.154.86 2606:4700:3035::6815:30a2 2606:4700:3037::ac43:9a56 (AS13335) (address records, no CNAME)
www vs bare domain	Same network bookstudenterkorsel.dk: 104.21.48.162 172.67.154.86 2606:4700:3035::6815:30a2 2606:4700:3037::ac43:9a56 (AS13335) www.bookstudenterkorsel.dk: 104.21.48.162 172.67.154.86 2606:4700:3035::6815:30a2 2606:4700:3037::ac43:9a56 (AS13335)
Wildcard	Yes: any name under the zone resolves

✍️ DKIM keys#

1 found

Selector	CNAME	Key
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

🔗 TLSA / DANE#

2 records 45ms

Service / Owner	Type	Cert 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#

176ms

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

🏷️ SOA#

80ms

Field	Value
Serial	2405909058
Primary NS (MNAME)	karina.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-07 01:46:01

Field	Value
Registrar	Simply.com A/S
Registered	2013-04-26
Expires	2027-04-30 (193d)

📋 WHOIS#

⏱️ Lookup Timing#

80ms

63ms

62ms

AAAA

81ms

TXT

224ms

CAA

86ms

HTTPS

81ms

TLSA

45ms

SOA

80ms

MTA-STS

53ms

DNSSEC

176ms

SRV

0ms

Total

670ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
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	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 shown	670ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-16 16:00:59	473ms	2 NS 2 A 1 MX	🔓 Insecure