studentkorsel.dk is a .dk domain served by 2 nameservers (ns1.curanet.dk, ns2.curanet.dk). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 76.76.21.21 is hosted by Amazon.com, Inc. (AS16509) in United States. Mail is handled by mx1.onlinemail.io, mx2.onlinemail.io. The zone is DNSSEC-signed and validates, publishes a DMARC policy and has no IPv6 address. 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 |
|---|---|---|---|---|---|---|---|
| 76.76.21.21 | — | — | AS16509 | Amazon.com, Inc. | 76.76.21.0/24 | 🇺🇸 United States | Walnut |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | — | mx1.onlinemail.io | 185.21.42.12 | mx1.onlinemail.io | AS48854 team.blue Denmark A/S |
| 20 | — | mx2.onlinemail.io | 46.36.208.16 | mx2.onlinemail.io | AS48854 team.blue Denmark A/S |
| TXT Record |
|---|
| v=spf1 include:spf.onlinemail.io -all |
| Policy | Record (studentkorsel.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:spf.onlinemail.io -all |
| Policy | Record (_dmarc.studentkorsel.dk) |
|---|---|
| p=none (monitor only) | v=DMARC1; p=none; |
| www CNAME | cname.vercel-dns.com (all on vercel-dns.com) |
| www vs bare domain | Same network studentkorsel.dk: 216.150.1.129 216.150.16.65 (AS16509) www.studentkorsel.dk: 66.33.60.34 76.76.21.164 (AS16509) |
| Wildcard | Yes: any name under the zone resolves |
DNS lookups: 3/10 · policy: -all
No problems found| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026040901 |
| Primary NS (MNAME) | ns1.curanet.dk |
| Responsible (RNAME) | hostmaster@curanet.dk |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 300s |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-22 21:14:17 | 725ms | 2 NS 2 A 2 MX | 🔓 Insecure |
| 2026-10-09 10:23:35 | 1041ms | 2 NS 2 A 2 MX | 🔓 Insecure |
| 2026-10-01 05:22:07 | 778ms | 2 NS 2 A 2 MX | 🔓 Insecure |
| 2026-09-30 00:24:24 | 709ms | 2 NS 2 A 2 MX | 🔓 Insecure |
| 2026-09-07 14:49:08 | 9632ms | 2 NS 2 A 2 MX | 🔓 Insecure |
| 2026-08-28 04:49:36 | 1171ms | 2 NS 2 A 2 MX | 🔓 Insecure |
| 2026-08-24 23:18:53 | 951ms | 2 NS 2 A 2 MX | 🔓 Insecure |
| 2026-08-06 13:41:13 | 1053ms | 2 NS 2 A 2 MX | 🔓 Insecure |
| 2026-06-17 12:19:18 shown | 552ms | 2 NS 1 A 2 MX | 🔒 Secure |