buhfaurholt.dk is a .dk domain served by 2 nameservers (barbara.ns.cloudflare.com, justin.ns.cloudflare.com). It was registered on 23 September 2024 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.13.31 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by buhfaurholt-dk.mail.protection.outlook.com. The zone is not DNSSEC-signed, has no DMARC policy and is reachable over IPv6. 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 |
|---|---|---|---|---|---|---|---|
| 104.21.13.31 | 300s | — | AS13335 | Cloudflare, Inc. | 104.21.0.0/17 | — | — |
| 172.67.132.124 | 300s | — | AS13335 | Cloudflare, Inc. | 172.67.128.0/17 | — | — |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | autodiscover.outlook.com → 52.98.154.152 |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3032::ac43:847c | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| 2606:4700:3037::6815:d1f | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=104.21.13.31,172.67.132.124 ech=AEX+DQBB/AAgACBpBkJcnPfGknMoBOPEoOI5hVbW5T9pXET7lGEHrG0PcQAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3032::ac43:847c,2606:4700:3037::6815:d1f |
| TXT Record |
|---|
| v=spf1 include:_custspf.one.com include:spf.protection.outlook.com ip4:20.160.150.169 -all |
| Policy | Record (buhfaurholt.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:_custspf.one.com include:spf.protection.outlook.com ip4:20.160.150.169 -all |
| www | 104.21.13.31 172.67.132.124 2606:4700:3032::ac43:847c 2606:4700:3037::6815:d1f (AS13335) (address records, no CNAME) |
| www vs bare domain | Same network buhfaurholt.dk: 104.21.13.31 172.67.132.124 2606:4700:3032::ac43:847c 2606:4700:3037::6815:d1f (AS13335) www.buhfaurholt.dk: 104.21.13.31 172.67.132.124 2606:4700:3032::ac43:847c 2606:4700:3037::6815:d1f (AS13335) |
| Wildcard | No |
| Selector | CNAME | Key |
|---|---|---|
| selector1 | selector1-buhfaurholt-dk._domainkey.faurholt221.onmicrosoft.com | RSA · ~2048 bit |
| selector2 | selector2-buhfaurholt-dk._domainkey.faurholt221.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: 2/10 · policy: -all
No problems found| Check | Result |
|---|---|
| Validation Status | 🔓 Insecure |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✗ Not found |
| DNSKEY Record | ✗ Not found |
| Flags | unsigned answer |
| Field | Value |
|---|---|
| Serial | 2416403297 |
| Primary NS (MNAME) | barbara.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Field | Value |
|---|---|
| Registrar | ONE.COM A/S |
| Registered | 2024-09-23 |
| Expires | 2027-09-22 (337d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-02 10:45:10 shown | 996ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-27 09:41:49 | 1208ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-25 09:35:26 | 1124ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-11 15:28:21 | 1013ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-04 11:20:18 | 1190ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-28 01:19:30 | 844ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-05 22:05:17 | 1415ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-29 15:44:38 | 10273ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-03 14:52:28 | 5340ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-23 13:48:55 | 928ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-16 17:35:51 | 632ms | 2 NS 1 A 1 MX | 🔒 Secure |