ryhojskole.dk is a .dk domain served by 2 nameservers (ns.dandomain.dk, ns2.dandomain.dk). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 93.191.158.43 is hosted by team.blue Denmark A/S (AS48854) in Denmark. Mail is handled by ryhojskole-dk.mail.protection.outlook.com. The zone is DNSSEC-signed and validates, has no 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 |
|---|---|---|---|---|---|---|---|
| 93.191.158.43 | 60s | linux23.dandomain.dk | AS48854 | team.blue Denmark A/S | 93.191.152.0/21 | 🇩🇰 Denmark | — |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 0 | 3600s | ryhojskole-dk.mail.protection.outlook.com | — | — | — |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | 40.104.116.56 |
| TXT Record |
|---|
| google-site-verification=5QnnMYflvyBmf--VzVV7tOfeZEqgeEOAbL9-w_OmVTQ |
| MS=ms31662347 |
| v=spf1 include:spf.protection.outlook.com include:spf.dandomain.dk -all |
| Policy | Record (ryhojskole.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:spf.protection.outlook.com include:spf.dandomain.dk -all |
| www CNAME | ryhojskole.dk (all on ryhojskole.dk) → 93.191.158.43 (AS48854) |
| www vs bare domain | Same network |
| Wildcard | No |
| Denial of existence | NSEC3 · 1 iteration · 1-byte salt RFC 9276 recommends 0 iterations and no salt |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
| Selector | CNAME | Key |
|---|---|---|
| s1 | s1.domainkey.u25943214.wl215.sendgrid.net | RSA · ~2048 bit |
| s2 | s2.domainkey.u25943214.wl215.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 | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2025080501 |
| Primary NS (MNAME) | ns.dandomain.dk |
| Responsible (RNAME) | hostmaster@dandomain.dk |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 300s |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-09 10:08:37 | 1334ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-03 08:39:13 | 970ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-01 01:49:48 | 752ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-27 00:01:40 | 828ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-03 03:17:32 | 2886ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-21 22:43:35 | 8975ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-20 10:20:19 | 8798ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-07-19 00:41:36 | 1316ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-07-17 19:33:18 | 945ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-07-07 02:00:55 | 1546ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-27 11:04:48 | 1004ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-26 08:41:55 | 1295ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-26 01:25:00 shown | 1860ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-18 03:01:27 | 886ms | 2 NS 1 A 1 MX | 🔒 Secure |