guideschool.dk is a .dk domain served by 4 nameservers (ns1.simply.com, ns2.simply.com, ns3.simply.com and 1 more). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 91.201.60.80 is hosted by ODERLAND Webbhotell AB (AS44136) in Sweden. Mail is handled by mx.spamfilter.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 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 |
|---|---|---|---|---|---|---|---|
| 91.201.60.80 | 60s | premium17.oderland.com | AS44136 | ODERLAND Webbhotell AB | 91.201.60.0/22 | 🇸🇪 Sweden | — |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | autodiscoverredirect.webexchange.nu → 46.36.209.50 |
| 🔶 Autoconfig | 93.191.152.161 |
| TXT Record |
|---|
| facebook-domain-verification=qm8odz7m2acuvo5pf782c52qe3ukyq |
| google-site-verification=XCd2Oz3EvQXrUG9YYUA4NyBp7ABxVVsQv6Sw7rXjYG4 |
| v=spf1 include:spf.curanet.dk include:emsd1.com include:servers.mcsv.net include:mailgun.org include:spf.mandrillapp.com -all |
| Policy | Record (guideschool.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:spf.curanet.dk include:emsd1.com include:servers.mcsv.net include:mailgun.org include:spf.mandrillapp.com -all |
| Policy | Record (_dmarc.guideschool.dk) |
|---|---|
| p=none (monitor only) | v=DMARC1; p=none; |
| www | 91.201.60.80 (AS44136) (address records, no CNAME) |
| www vs bare domain | Same network |
| Wildcard | Yes: any name under the zone resolves |
| Denial of existence | NSEC zone can be walked (all names enumerable) |
| CDS / CDNSKEY | Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY |
| Selector | CNAME | Key |
|---|---|---|
| k1 | dkim.mcsv.net | 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: 11/10 · policy: -all
| Service / Owner | Type | Cert association |
|---|---|---|
| SMTP _25._tcp.mx.spamfilter.io | DANE-EE · SPKI · SHA-256 | 9A25F05F2E322DABDCC9B7A06AB47A2D… |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026101200 |
| Primary NS (MNAME) | ns1.simply.com |
| Responsible (RNAME) | hostmaster@simply.com |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 3600s |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-13 06:24:28 shown | 1074ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-30 17:50:10 | 603ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-30 16:54:09 | 734ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-19 19:20:39 | 555ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-02 01:17:48 | 584ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-01 14:05:32 | 700ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-24 11:35:34 | 793ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-22 14:34:24 | 775ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-22 11:00:19 | 1153ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-20 19:20:40 | 1125ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-20 16:03:52 | 1181ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-17 10:43:21 | 3117ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-17 10:43:11 | 726ms | 4 NS 1 A 1 MX | 🔒 Secure |