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 our latest scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.
| 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 | — | — |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | autodiscover.outlook.com → 40.104.116.40 |
| 🔶 Autoconfig | 172.67.220.62 |
| 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 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=104.21.59.84,172.67.220.62 ech=AEX+DQBBVAAgACCYaEk5fchu1YXXkg45WmJCudxxajgUL6N7HV1VnKDVcgAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3031::6815:3b54,2606:4700:3036::ac43:dc3e |
| 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 |
| 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 |
| 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 |
| 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 |
| Selector | CNAME | Key |
|---|---|---|
| — | 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.
DNS lookups: 5/10 · policy: ~all
No problems found| Type | Name | Value |
|---|---|---|
| TXT | _acme-challenge.studerendeonline.dk | IkAvonAmuplvFfQsrOU-nx-vuPYWTdBbZcViOmlxthI |
| TXT | _acme-challenge.studerendeonline.dk | YeZgocgg7VRCkk-GLEye8Oa3AdeRH4xONkmWG_DyWhY |
| Check | Result |
|---|---|
| Validation Status | 🔓 Insecure |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✗ Not found |
| DNSKEY Record | ✗ Not found |
| Flags | unsigned answer |
| Field | Value |
|---|---|
| Serial | 2416147473 |
| Primary NS (MNAME) | hank.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 2000-06-21 |
| Expires | 2027-06-30 (253d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-09-29 21:52:36 shown | 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 | 2832ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-17 19:13:43 | 3879ms | 2 NS 2 A 1 MX | 🔓 Insecure |