tlbyg.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 193.104.202.80 is hosted by It Forum Gruppen A/s (AS50346) in Denmark. Mail is handled by tlbyg-dk.mail.protection.outlook.com. 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 |
|---|---|---|---|---|---|---|---|
| 193.104.202.80 | 3600s | mbx.itsecurity.dk | AS50346 | It Forum Gruppen A/s | 193.104.202.0/24 | 🇩🇰 Denmark | Hellerup |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | autodiscover.outlook.com → 40.104.116.8 |
| 🔶 Autoconfig | 193.104.202.80 |
| Service | Priority | Weight | Port | Target |
|---|---|---|---|---|
| _sipfederationtls._tcp | 100 | 1 | 5061 | sipfed.online.lync.com |
| TXT Record |
|---|
| 6AKif8EEM2HlbYI2n51d4i4QoCO2xMNJHNnxYknA5DCkrU4K24CRMSnsaykfJIXwtf6yU+A7L+rAJKa+NcDZAA== |
| apple-domain-verification=e8avFmvmlHuWCkJq |
| v=spf1 ip4:94.231.110.14 ip4:94.231.106.116 ip4:77.68.238.181 ip4:77.68.238.178 ip4:77.68.238.179 ip4:5.33.7.2 include:mailgun.org include:spf.exclaimer.net include:spf.itsit.dk include:spf.zoho.eu -all |
| Policy | Record (tlbyg.dk) |
|---|---|
| -all (hard fail) | v=spf1 ip4:94.231.110.14 ip4:94.231.106.116 ip4:77.68.238.181 ip4:77.68.238.178 ip4:77.68.238.179 ip4:5.33.7.2 include:mailgun.org include:spf.exclaimer.net include:spf.itsit.dk include:spf.zoho.eu -all |
| Policy | Record (_dmarc.tlbyg.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; rua=mailto:dmarc@itsit.dk |
| www | 193.104.202.80 (AS50346) (address records, no CNAME) |
| www vs bare domain | Same network |
| Wildcard | Yes: any name under the zone resolves |
| 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 |
|---|---|---|
| selector1 | selector1-tlbyg-dk._domainkey.tlbyg.onmicrosoft.com | RSA · ~2048 bit |
| selector2 | selector2-tlbyg-dk._domainkey.tlbyg.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: 9/10 · policy: -all
| Type | Name | Value |
|---|---|---|
| CNAME | _acme-challenge.tlbyg.dk | 9bc203fd-917e-413e-ade2-3c50763735bc.auth.acme-dns.io |
| TXT | 9bc203fd-917e-413e-ade2-3c50763735bc.auth.acme-dns.io | 7bm5Ui_glcQ0WWmvtYJnU5pjrBklOh4KXPbzis_fWMs |
| TXT | 9bc203fd-917e-413e-ade2-3c50763735bc.auth.acme-dns.io | YOSmp5rrcFY3Ed3mjZI21bzr31cOlqFupR9MKxCsDBI |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2025070303 |
| 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 |
|---|---|---|---|
| 2026-08-26 02:50:53 shown | 1315ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-30 14:22:56 | 731ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-23 03:50:14 | 944ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-20 14:56:58 | 2950ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-20 11:11:16 | 520ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-20 11:07:53 | 831ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-18 03:48:41 | 2061ms | 2 NS 1 A 1 MX | 🔒 Secure |