otg.dk is a .dk domain served by 2 nameservers (ns1.esis.dk, ns2.esis.dk). It was registered on 22 April 2004 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 185.19.134.149 is hosted by Syddansk Erhvervsskole Odense-Vejle (AS199374) in Denmark. Mail is handled by otg-dk.mail.protection.outlook.com. The zone is DNSSEC-signed but currently fails validation, 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.
| Nameserver | IP addresses | PTR | ASN / ISP |
|---|---|---|---|
| ns1.esis.dk | 185.19.134.2 | ns1.esis.dk | AS199374 Syddansk Erhvervsskole Odense-Vejle |
| ns2.esis.dk | 185.19.134.3 | ns2.esis.dk | AS199374 Syddansk Erhvervsskole Odense-Vejle |
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 185.19.134.149 | 3600s | eali.dk hovsa.eali.dk hovsa.sde-tv.dk test.eali.dk test.sde-tv.dk testdnssec.tuc-fyn.dk |
AS199374 | Syddansk Erhvervsskole Odense-Vejle | 185.19.132.0/22 | 🇩🇰 Denmark | Odense |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | 185.19.134.44 |
| Service | Priority | Weight | Port | Target |
|---|---|---|---|---|
| _autodiscover._tcp | 100 | 1 | 443 | autodiscover.sde.dk |
| _sip._tcp | 0 | 0 | 443 | sip.otg.dk |
| _sipfederationtls._tcp | 0 | 0 | 5061 | sip.otg.dk |
| TXT Record |
|---|
| adobe-idp-site-verification=42a470a786b08b1d0ebc38c4e47e68fa11a211afde2f4ee7c08d0a37e118af55 |
| apple-domain-verification=8v7TZSFy45gMvwMW |
| google-site-verification=VT2l_W-HzmqBc-egMIcWKzEMJTrKJghxzjVLobsOvnc |
| google-site-verification=yeqbOahAfVeKD77UBFphjCxbMFzYYl-jXxeZrqfjRew |
| inst=Odense |
| inst=OdenseTekniskeSkole-OdenseC2 |
| MS=ms93517614 |
| MS=ms99443529 |
| uvmid=461401 |
| v=spf1 ip4:185.19.134.44 include:spf.protection.outlook.com -all |
| Policy | Record (otg.dk) |
|---|---|
| -all (hard fail) | v=spf1 ip4:185.19.134.44 include:spf.protection.outlook.com -all |
| Policy | Record (_dmarc.otg.dk) |
|---|---|
| p=reject | v=DMARC1;p=reject;sp=reject;rua=mailto:be7762a8bd@rua.easydmarc.eu;ruf=mailto:be7762a8bd@ruf.easydmarc.eu;fo=1 |
| www | 185.19.134.149 (AS199374) (address records, no CNAME) |
| www vs bare domain | Same network |
| Wildcard | No |
| Denial of existence | NSEC3 · 50 iterations · 8-byte salt RFC 9276 recommends 0 iterations and no salt |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
| Selector | CNAME | Key |
|---|---|---|
| selector1 | selector1-otg-dk._domainkey.edusde.onmicrosoft.com | 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: 1/10 · policy: -all
No problems found| Check | Result |
|---|---|
| Validation Status | ⚠️ Bogus |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | broken trust chain resolving 'otg.dk/DNSKEY/IN': 127.0.0.1#53 |
| Field | Value |
|---|---|
| Serial | 2020051911 |
| Primary NS (MNAME) | ns1.esis.dk |
| Responsible (RNAME) | hostmaster |
| Refresh | 900s |
| Retry | 600s |
| Expire | 86400s |
| Minimum (neg-cache TTL) | 3600s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 2004-04-22 |
| Expires | 2036-04-30 (3480d) |
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).
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-18 13:14:47 | 1710ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-17 11:50:46 | 2595ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-13 06:35:18 | 1128ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-12 06:15:45 | 3405ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-10 02:34:27 | 1348ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-08 23:22:40 | 3686ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-06 23:12:02 | 3376ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-04 21:16:49 | 1457ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-02 21:11:28 | 1132ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-30 21:04:18 | 2782ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-26 20:23:56 | 1146ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-25 20:09:33 | 922ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-24 19:59:02 | 1632ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-22 12:58:29 | 1586ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-16 05:21:34 | 1760ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-13 04:20:23 | 3542ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-06 03:53:46 | 1505ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-04 00:43:14 | 805ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-31 05:37:43 | 918ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-28 15:34:22 | 5115ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-27 14:07:29 | 1467ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-26 03:26:55 | 1041ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-23 21:14:09 | 2906ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-22 13:45:04 | 8865ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-20 13:02:00 | 4238ms | 2 NS 1 A 1 MX | 🔒 Secure |