fbmail.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 94.231.109.237 is hosted by team.blue Denmark A/S (AS48854) in Denmark. Mail is handled by fbmail-dk.w-v1.mx.microsoft. 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.curanet.dk | — | — | — |
| ns2.curanet.dk | — | — | — |
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 94.231.109.237 | — | splash.zitcom.dk | AS48854 | team.blue Denmark A/S | 94.231.96.0/20 | 🇩🇰 Denmark | — |
| TXT Record |
|---|
| v=spf1 ip4:87.63.59.158 ip4:2.106.154.58 ip4:87.62.221.174 include:web.shared.mysmtp.com include:spf.protection.outlook.com include:_spf-hosting.eg.dk -all |
| Policy | Record (fbmail.dk) |
|---|---|
| -all (hard fail) | v=spf1 ip4:87.63.59.158 ip4:2.106.154.58 ip4:87.62.221.174 include:web.shared.mysmtp.com include:spf.protection.outlook.com include:_spf-hosting.eg.dk -all |
| Policy | Record (_dmarc.fbmail.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; sp=none; rua=mailto:dmarc_agg@vali.email,mailto:dmarc@fbmail.dk; ri=86400 |
| www | Address record (no CNAME) |
| 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 |
|---|---|---|
| s1 | s1.domainkey.u29207631.wl132.sendgrid.net | RSA · ~2048 bit |
| s2 | s2.domainkey.u29207631.wl132.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: 6/10 · policy: -all
No problems found| Service / Owner | Type | Cert association |
|---|---|---|
| SMTP _25._tcp.fbmail-dk.w-v1.mx.microsoft | DANE-EE · SPKI · SHA-256 | 133086C7B822371A4A3304F1661A7880… |
| SMTP _25._tcp.fbmail-dk.w-v1.mx.microsoft | DANE-TA · Full cert · SHA-256 | 38D895F5105BC2545822C17A2444F4B0… |
| SMTP _25._tcp.fbmail-dk.w-v1.mx.microsoft | DANE-TA · Full cert · SHA-256 | 6EBFF927297A5B3AAF5EAE672252C36A… |
| SMTP _25._tcp.fbmail-dk.w-v1.mx.microsoft | DANE-TA · Full cert · SHA-256 | 5F88694615E4C61686E106B84C3338C6… |
| SMTP _25._tcp.fbmail-dk.w-v1.mx.microsoft | DANE-EE · SPKI · SHA-256 | C495D9E40F7E625BE22F83CC64305182… |
| SMTP _25._tcp.fbmail-dk.w-v1.mx.microsoft | DANE-EE · SPKI · SHA-256 | A6C267923B26A4A9617EDA73D8DB4FBC… |
| Check | Result |
|---|---|
| Validation Status | ⚠️ Bogus |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | resolution failed: insecurity proof failed |
| Field | Value |
|---|---|
| Serial | 2026010702 |
| 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 |
|---|---|---|---|
| 2026-10-01 09:23:22 | 489ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-27 06:13:53 | 629ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-01 23:47:51 | 2285ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-17 09:48:29 shown | 2246ms | 2 NS 1 A 1 MX | ⚠️ Bogus |