studierejser.dk is a .dk domain served by 2 nameservers (aurora.ns.cloudflare.com, keaton.ns.cloudflare.com). It was registered on 8 September 1997 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.75.106 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by 1234.1234.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.
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 104.21.75.106 | 300s | — | AS13335 | Cloudflare, Inc. | 104.21.0.0/17 | — | — |
| 172.67.221.88 | 300s | — | AS13335 | Cloudflare, Inc. | 172.67.128.0/17 | — | — |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 0 | 300s | 1234.1234.com | — | — | — |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3030::6815:4b6a | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| 2606:4700:3036::ac43:dd58 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=104.21.75.106,172.67.221.88 ech=AEX+DQBB1AAgACDa8kXjeEYal6daZuitoaaXXfDB1dRQq+8MDYZsr4i6OwAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3030::6815:4b6a,2606:4700:3036::ac43:dd58 |
| TXT Record |
|---|
| google-site-verification: eidFkJU_TrhuP9taEtNYI_0D2_sJeNBf8ZLbHf7_ZO0 |
| v=spf1 -all |
| Policy | Record (studierejser.dk) |
|---|---|
| -all (hard fail) | v=spf1 -all |
| Policy | Record (_dmarc.studierejser.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; rua=mailto:dmarc_agg@vali.email; |
| www | 104.21.75.106 172.67.221.88 2606:4700:3030::6815:4b6a 2606:4700:3036::ac43:dd58 (AS13335) (address records, no CNAME) |
| www vs bare domain | Same network studierejser.dk: 188.114.96.1 188.114.97.1 2606:4700:3030::6815:4b6a 2606:4700:3036::ac43:dd58 (AS13335) www.studierejser.dk: 104.21.75.106 172.67.221.88 2606:4700:3030::6815:4b6a 2606:4700:3036::ac43:dd58 (AS13335) |
| Wildcard | No |
| Selector | CNAME | Key |
|---|---|---|
| default | — | Revoked (empty key) |
| dkim | — | Revoked (empty key) |
| k1 | — | Revoked (empty key) |
| — | Revoked (empty key) | |
| s1 | — | Revoked (empty key) |
| s2 | — | Revoked (empty key) |
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: 0/10 · policy: -all
No problems found| 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 | 2409153000 |
| Primary NS (MNAME) | aurora.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Field | Value |
|---|---|
| Registrar | ONE.COM A/S |
| Registered | 1997-09-08 |
| Expires | 2027-09-30 (348d) |
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).
| Domain | Registrar |
|---|---|
| oestrigsruten.dk | ONE.COM A/S |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-09-22 09:03:33 | 789ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-09 16:17:24 | 1411ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-08 03:50:38 | 609ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-07-14 07:16:56 shown | 964ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-07-09 23:25:58 | 786ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-07-01 21:33:04 | 1011ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-18 05:05:41 | 607ms | 2 NS 1 A 1 MX | 🔒 Secure |