laererstuderende.dk is a .dk domain served by 2 nameservers (ivan.ns.cloudflare.com, janet.ns.cloudflare.com). It was registered on 17 February 2000 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.26.12.23 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by aspmx.l.google.com, alt1.aspmx.l.google.com and 3 more. 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 |
|---|---|---|---|---|---|---|---|
| 104.26.12.23 | 300s | — | AS13335 | Cloudflare, Inc. | 104.26.0.0/20 | — | — |
| 104.26.13.23 | 300s | — | AS13335 | Cloudflare, Inc. | 104.26.0.0/20 | — | — |
| 172.67.69.129 | 300s | — | AS13335 | Cloudflare, Inc. | 172.67.64.0/18 | — | — |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:20::681a:c17 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:20:0:0:0:0:0/44 | — | — |
| 2606:4700:20::681a:d17 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:20:0:0:0:0:0/44 | — | — |
| 2606:4700:20::ac43:4581 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:20:0:0:0:0:0/44 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h2" ipv4hint=104.26.12.23,104.26.13.23,172.67.69.129 ipv6hint=2606:4700:20::681a:c17,2606:4700:20::681a:d17,2606:4700:20::ac43:4581 |
| TXT Record |
|---|
| google-site-verification=rjSOdloEV8wgHrQchThHPGfNYlwVF0fxCX-rX1GEcGA |
| v=spf1 mx ip4:185.223.26.234 include:sendgrid.net include:_spf.google.com ~all |
| Policy | Record (laererstuderende.dk) |
|---|---|
| ~all (soft fail) | v=spf1 mx ip4:185.223.26.234 include:sendgrid.net include:_spf.google.com ~all |
| Policy | Record (_dmarc.laererstuderende.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; pct=100; rua=mailto:1e910fc61df143c0b09b1dca36c5f4ec@dmarc-reports.cloudflare.net |
| www | 104.26.12.23 104.26.13.23 172.67.69.129 2606:4700:20::681a:c17 2606:4700:20::681a:d17 2606:4700:20::ac43:4581 (AS13335) (address records, no CNAME) |
| www vs bare domain | Same network laererstuderende.dk: 104.26.12.23 104.26.13.23 172.67.69.129 2606:4700:20::681a:c17 (AS13335) www.laererstuderende.dk: 104.26.12.23 104.26.13.23 172.67.69.129 2606:4700:20::681a:c17 (AS13335) |
| Wildcard | No |
| Denial of existence | Compact NSEC (RFC 9824, "black lies") not walkable |
| CDS / CDNSKEY | Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY |
| Selector | CNAME | Key |
|---|---|---|
| — | RSA · ~2048 bit | |
| s1 | s1.domainkey.u906417.wl168.sendgrid.net | RSA · ~2048 bit |
| s2 | s2.domainkey.u906417.wl168.sendgrid.net | RSA · ~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: 4/10 · policy: ~all
No problems found| Check | Result |
|---|---|
| Validation Status | 🔓 Insecure |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✗ Not found |
| DNSKEY Record | ✓ Found |
| Flags | unsigned answer |
| Field | Value |
|---|---|
| Serial | 2417448266 |
| Primary NS (MNAME) | ivan.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 | 2000-02-17 |
| Expires | 2027-03-31 (164d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-15 02:23:43 shown | 899ms | 2 NS 3 A 5 MX | 🔓 Insecure |
| 2026-10-01 03:47:00 | 983ms | 2 NS 3 A 5 MX | 🔓 Insecure |
| 2026-09-30 03:40:18 | 1288ms | 2 NS 3 A 5 MX | 🔓 Insecure |
| 2026-09-20 18:51:02 | 1429ms | 2 NS 3 A 5 MX | 🔓 Insecure |
| 2026-09-05 13:42:44 | 2024ms | 2 NS 3 A 5 MX | 🔓 Insecure |
| 2026-08-27 23:04:08 | 1161ms | 2 NS 3 A 5 MX | 🔓 Insecure |
| 2026-08-27 20:16:57 | 781ms | 2 NS 3 A 5 MX | 🔓 Insecure |
| 2026-08-15 10:03:23 | 1752ms | 2 NS 3 A 5 MX | 🔓 Insecure |
| 2026-08-08 16:13:36 | 1680ms | 2 NS 3 A 5 MX | 🔓 Insecure |
| 2026-08-01 16:26:09 | 3513ms | 2 NS 3 A 5 MX | 🔓 Insecure |
| 2026-07-28 22:35:20 | 2063ms | 2 NS 3 A 5 MX | 🔓 Insecure |
| 2026-07-25 16:24:29 | 17557ms | 2 NS 3 A 5 MX | 🔓 Insecure |
| 2026-07-11 09:59:09 | 3371ms | 2 NS 3 A 5 MX | 🔓 Insecure |
| 2026-07-03 18:14:44 | 3239ms | 2 NS 3 A 5 MX | 🔓 Insecure |
| 2026-07-02 17:33:11 | 5965ms | 2 NS 3 A 5 MX | 🔓 Insecure |
| 2026-06-24 03:20:42 | 2376ms | 2 NS 3 A 5 MX | 🔓 Insecure |
| 2026-06-23 12:19:26 | 902ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-23 06:04:15 | 1660ms | 2 NS 3 A 5 MX | 🔓 Insecure |
| 2026-06-23 01:41:12 | 1166ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-18 01:04:08 | 2034ms | 2 NS 3 A 5 MX | 🔓 Insecure |