sanderg.dk is a .dk domain served by 2 nameservers (addilyn.ns.cloudflare.com, hugh.ns.cloudflare.com). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.73.231 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by mx1-hosting.jellyfish.systems, mx2-hosting.jellyfish.systems and 1 more. The zone is not DNSSEC-signed, publishes a DMARC policy and is reachable over IPv6. 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.
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 104.21.73.231 | — | — | AS13335 | Cloudflare, Inc. | 104.21.0.0/17 | — | — |
| 172.67.167.136 | — | — | AS13335 | Cloudflare, Inc. | 172.67.128.0/17 | — | — |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 5 | — | mx1-hosting.jellyfish.systems | 162.255.118.28 | oxse3a.privateemail.com | AS22612 Namecheap, Inc. |
| 10 | — | mx2-hosting.jellyfish.systems | 162.255.118.29 | oxse2b.privateemail.com | AS22612 Namecheap, Inc. |
| 20 | — | mx3-hosting.jellyfish.systems | 162.255.118.13 | mx3-hosting.jellyfish.systems | AS22612 Namecheap, Inc. |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3032::6815:49e7 | — | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| 2606:4700:3037::ac43:a788 | — | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=104.21.73.231,172.67.167.136 ech=AEX+DQBBNAAgACDAjIMLMdyoyKrz46qSONFPzN+RU0NXjPG5OscOQ8iLfgAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3032::6815:49e7,2606:4700:3037::ac43:a788 |
| TXT Record |
|---|
| v=spf1 +a +mx +ip4:63.250.38.134 include:spf.web-hosting.com ~all |
| Policy | Record (sanderg.dk) |
|---|---|
| ~all (soft fail) | v=spf1 +a +mx +ip4:63.250.38.134 include:spf.web-hosting.com ~all |
| Policy | Record (_dmarc.sanderg.dk) |
|---|---|
| p=none (monitor only) | v=DMARC1; p=none; |
| www | 104.21.73.231 172.67.167.136 2606:4700:3031::6815:49e7 2606:4700:3031::ac43:a788 (AS13335) (address records, no CNAME) |
| www vs bare domain | Same network |
| Wildcard | No |
| Selector | CNAME | Key |
|---|---|---|
| default | — | 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
| 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 | 2405978509 |
| Primary NS (MNAME) | addilyn.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-09 09:32:27 | 1398ms | 2 NS 2 A 3 MX | 🔓 Insecure |
| 2026-10-01 07:33:39 | 1505ms | 2 NS 2 A 3 MX | 🔓 Insecure |
| 2026-09-30 13:35:32 | 2509ms | 2 NS 2 A 3 MX | 🔓 Insecure |
| 2026-09-25 12:52:20 | 1186ms | 2 NS 2 A 3 MX | 🔓 Insecure |
| 2026-09-13 16:04:40 | 1873ms | 2 NS 2 A 3 MX | 🔓 Insecure |
| 2026-09-06 14:58:49 | 3271ms | 2 NS 2 A 3 MX | 🔓 Insecure |
| 2026-08-26 19:27:05 | 3807ms | 2 NS 2 A 3 MX | 🔓 Insecure |
| 2026-08-02 10:23:34 | 9133ms | 2 NS 2 A 3 MX | 🔓 Insecure |
| 2026-07-18 05:36:43 | 10212ms | 2 NS 2 A 3 MX | 🔓 Insecure |
| 2026-06-21 00:56:54 | 566ms | 2 NS 2 A 3 MX | 🔓 Insecure |
| 2026-06-17 13:07:32 shown | 848ms | 2 NS 2 A 3 MX | 🔓 Insecure |