studerendeonline.dk

📜 Historical scan 2026-08-03 03:27:23 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

studerendeonline.dk is a .dk domain served by 2 nameservers (hank.ns.cloudflare.com, olga.ns.cloudflare.com). It was registered on 21 June 2000 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.59.84 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by studerendeonline-dk.mail.protection.outlook.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 199ms

Nameserver	IP addresses	PTR	ASN / ISP
hank.ns.cloudflare.com	108.162.193.116 172.64.33.116 173.245.59.116 2606:4700:58::adf5:3b74 2803:f800:50::6ca2:c174 2a06:98c1:50::ac40:2174	hank.ns.cloudflare.com hank.ns.cloudflare.com hank.ns.cloudflare.com hank.ns.cloudflare.com hank.ns.cloudflare.com hank.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
olga.ns.cloudflare.com	108.162.192.137 172.64.32.137 173.245.58.137 2606:4700:50::adf5:3a89 2803:f800:50::6ca2:c089 2a06:98c1:50::ac40:2089	olga.ns.cloudflare.com olga.ns.cloudflare.com olga.ns.cloudflare.com olga.ns.cloudflare.com olga.ns.cloudflare.com olga.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 127ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.59.84	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.220.62	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

1 records 140ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	300s	studerendeonline-dk.mail.protection.outlook.com	2a01:111:f403:ca04::2 2a01:111:f403:ca04::4 2a01:111:f403:ca04::b 2a01:111:f403:ca09::9 52.101.68.12 52.101.68.16 52.101.68.3 52.101.68.5	mail-du2pr03cu00102.inbound.protection.outlook.com mail-db4pr02cu00204.inbound.protection.outlook.com mail-dbbpr03cu00103.inbound.protection.outlook.com mail-as8pr04cu00801.inbound.protection.outlook.com mail-db9pr02cu00204.inbound.protection.outlook.com mail-db4pr02cu00400.inbound.protection.outlook.com mail-db7pr03cu00403.inbound.protection.outlook.com mail-du2pr03cu00105.inbound.protection.outlook.com	AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	autodiscover.outlook.com → 40.104.116.8
🔶 Autoconfig	104.21.59.84

🔷 AAAA Records (IPv6)#

2 records 127ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3031::6815:3b54	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3036::ac43:dc3e	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 199ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.59.84,172.67.220.62 ech=AEX+DQBBaAAgACAQzpP+k/H44cNKgcRwbQA1FZf9ezpI0jDdLaBJAJkIbQAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3031::6815:3b54,2606:4700:3036::ac43:dc3e

📝 TXT Records#

6 records 345ms

TXT Record
google-site-verification=DcqvsMjp3_KXbspIHQjb3DX0EMw1ukpIokyS_eYXBcs
google-site-verification=tvZ8Tptcn8P7thPm1FciB6nZFeaSBgf0hqAH8FU9EOk
MS=ms52861155
sendinblue-code:c69a4774e80d7607244f9a311d3f8b27
v=DMARC1; p=quarantine; sp=quarantine; rua=mailto:dmarc@mailinblue.com,mailto:webmaster@studerendeonline.dk; ruf=mailto:dmarc@mailinblue.com,mailto:webmaster@studerendeonline.dk; rf=afrf; pct=100; ri=86400
v=spf1 ip4:77.233.252.243 ip4:77.233.252.244 ip4:77.233.252.245 ip4:77.233.252.248 ip4:83.89.199.62 ip4:62.243.73.0/24 ip4:77.32.175.81 ip4:212.27.13.241 include:spf.protection.outlook.com include:spf.webcrm.com include:spf.sendinblue.com mx ~all

✉️ SPF#

Policy	Record (studerendeonline.dk)
~all (soft fail)	v=spf1 ip4:77.233.252.243 ip4:77.233.252.244 ip4:77.233.252.245 ip4:77.233.252.248 ip4:83.89.199.62 ip4:62.243.73.0/24 ip4:77.32.175.81 ip4:212.27.13.241 include:spf.protection.outlook.com include:spf.webcrm.com include:spf.sendinblue.com mx ~all

📨 DMARC#

Policy	Record (_dmarc.studerendeonline.dk)
p=quarantine	v=DMARC1; p=quarantine; sp=quarantine; rua=mailto:2388421cee014eb6b32381aa65f6f2f3@dmarc-reports.cloudflare.net,mailto:dmarc@mailinblue.com!10m; ruf=mailto:dmarc@mailinblue.com!10m; rf=afrf; pct=100; ri=86400

📬 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 2026-10-08 01:55:37

www	104.21.59.84 172.67.220.62 2606:4700:3031::6815:3b54 2606:4700:3036::ac43:dc3e (AS13335) (address records, no CNAME)
www vs bare domain	Same network studerendeonline.dk: 104.21.59.84 172.67.220.62 2606:4700:3031::6815:3b54 2606:4700:3036::ac43:dc3e (AS13335) www.studerendeonline.dk: 104.21.59.84 172.67.220.62 2606:4700:3031::6815:3b54 2606:4700:3036::ac43:dc3e (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: 5/10 · policy: ~all

No problems found

🔏 ACME Challenge#

Type	Name	Value
TXT	_acme-challenge.studerendeonline.dk	IkAvonAmuplvFfQsrOU-nx-vuPYWTdBbZcViOmlxthI
TXT	_acme-challenge.studerendeonline.dk	YeZgocgg7VRCkk-GLEye8Oa3AdeRH4xONkmWG_DyWhY

🔗 TLSA / DANE#

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

🔐 DNSSEC#

277ms

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

🏷️ SOA#

0ms

Field	Value
Serial	2411048897
Primary NS (MNAME)	hank.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-10 01:47:16

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2000-06-21
Expires	2027-06-30 (252d)

📋 WHOIS#

⏱️ Lookup Timing#

199ms

127ms

140ms

AAAA

127ms

TXT

345ms

CAA

186ms

HTTPS

199ms

TLSA

524ms

SOA

0ms

MTA-STS

203ms

DNSSEC

277ms

SRV

232ms

Total

2832ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-09-29 21:52:36	1050ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-23 18:40:58	995ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-03 16:37:14	749ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-26 18:38:15	1310ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-03 03:27:23 shown	2832ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-17 19:13:43	3879ms	2 NS 2 A 1 MX	🔓 Insecure