feltopgaver.dk is a .dk domain served by 2 nameservers (ivan.ns.cloudflare.com, ruth.ns.cloudflare.com). It was registered on 1 October 2026 (WHOIS) and first appeared in the .dk zone on 2 October 2026. Its website address 104.21.45.179 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by .. The zone is not DNSSEC-signed, publishes a 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 |
|---|---|---|---|---|---|---|---|
| 104.21.45.179 | 300s | — | AS13335 | Cloudflare, Inc. | 104.21.0.0/17 | — | — |
| 172.67.217.184 | 300s | — | AS13335 | Cloudflare, Inc. | 172.67.128.0/17 | — | — |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 0 | 300s | . Null MX — domain accepts no email (RFC 7505) | |||
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3032::ac43:d9b8 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| 2606:4700:3037::6815:2db3 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=104.21.45.179,172.67.217.184 ech=AEX+DQBB8wAgACAqFPXp/n/N9FT8uQXqL6A8tg3HkFmDyrexbl99quxdIwAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3032::ac43:d9b8,2606:4700:3037::6815:2db3 |
| TXT Record |
|---|
| v=DKIM1; p= |
| v=spf1 -all |
| Policy | Record (feltopgaver.dk) |
|---|---|
| -all (hard fail) | v=spf1 -all |
| Policy | Record (_dmarc.feltopgaver.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; sp=reject |
| Flags | Tag | Value |
|---|---|---|
| 0 | issue | ; |
| 0 | issue | comodoca.com |
| 0 | issue | digicert.com; cansignhttpexchanges=yes |
| 0 | issue | letsencrypt.org |
| 0 | issue | pki.goog; cansignhttpexchanges=yes |
| 0 | issue | ssl.com |
| 0 | issuewild | ; |
| 0 | issuewild | comodoca.com |
| 0 | issuewild | digicert.com; cansignhttpexchanges=yes |
| 0 | issuewild | letsencrypt.org |
| 0 | issuewild | pki.goog; cansignhttpexchanges=yes |
| 0 | issuewild | ssl.com |
| www | 104.21.45.179 172.67.217.184 2606:4700:3032::ac43:d9b8 2606:4700:3037::6815:2db3 (AS13335) (address records, no CNAME) |
| www vs bare domain | Same network feltopgaver.dk: 104.21.45.179 172.67.217.184 2606:4700:3032::ac43:d9b8 2606:4700:3037::6815:2db3 (AS13335) www.feltopgaver.dk: 104.21.45.179 172.67.217.184 2606:4700:3032::ac43:d9b8 2606:4700:3037::6815:2db3 (AS13335) |
| Wildcard | No |
DNS lookups: 0/10 · 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 | 2417318527 |
| Primary NS (MNAME) | ivan.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 | 2026-10-01 |
| Expires | 2027-09-30 (346d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-13 19:59:11 shown | 518ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-10-09 14:11:24 | 1153ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-10-07 13:16:33 | 1978ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-10-05 09:05:02 | 1212ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-10-04 08:41:23 | 403ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-02 08:31:43 | 890ms | 2 NS 1 A 1 MX | 🔓 Insecure |