ommersysselrideklub.dk is a .dk domain served by 2 nameservers (duke.ns.cloudflare.com, kiki.ns.cloudflare.com). It was registered on 8 June 2009 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.21.129 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by mx.simply.com. 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 |
|---|---|---|---|---|---|---|---|
| 104.21.21.129 | 300s | — | AS13335 | Cloudflare, Inc. | 104.21.0.0/17 | — | — |
| 172.67.198.203 | 300s | — | AS13335 | Cloudflare, Inc. | 172.67.128.0/17 | — | — |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 3600s | mx.simply.com | 94.231.103.108 94.231.106.20 |
mx.simply.com mx.simply.com |
AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S |
| Service | CNAME / IP |
|---|---|
| 🔶 Autoconfig | maildiscover.simply.com → 94.231.108.222 |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3034::ac43:c6cb | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| 2606:4700:3035::6815:1581 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=104.21.21.129,172.67.198.203 ech=AEX+DQBB1AAgACC+S7EgutyXwHwwQJ/D+w1eQK7+vqPOW/HZJQ3ezR7fSQAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3034::ac43:c6cb,2606:4700:3035::6815:1581 |
| Service | Priority | Weight | Port | Target |
|---|---|---|---|---|
| _autodiscover._tcp | 10 | 10 | 443 | maildiscover.simply.com |
| TXT Record |
|---|
| v=spf1 include:spf.simply.com -all |
| v=spf1 mx a ip4:84.19.174.8 -all |
| Policy | Record (ommersysselrideklub.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:spf.simply.com -all |
| -all (hard fail) | v=spf1 mx a ip4:84.19.174.8 -all |
| Policy | Record (_dmarc.ommersysselrideklub.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; rua=mailto:dmarc@robot.simply.com; ruf=mailto:dmarc@robot.simply.com; |
| www | 104.21.21.129 172.67.198.203 2606:4700:3034::ac43:c6cb 2606:4700:3035::6815:1581 (AS13335) (address records, no CNAME) |
| www vs bare domain | Same network ommersysselrideklub.dk: 104.21.21.129 172.67.198.203 2606:4700:3034::ac43:c6cb 2606:4700:3035::6815:1581 (AS13335) www.ommersysselrideklub.dk: 104.21.21.129 172.67.198.203 2606:4700:3034::ac43:c6cb 2606:4700:3035::6815:1581 (AS13335) |
| Wildcard | No |
DNS lookups: 1/10 · policy: -all
| Service / Owner | Type | Cert association |
|---|---|---|
| SMTP _25._tcp.mx.simply.com | DANE-EE · SPKI · SHA-256 | 4B949F05A63FED95FC94B3A83DD70167… |
| 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 | 2417712737 |
| Primary NS (MNAME) | duke.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Field | Value |
|---|---|
| Registrar | Simply.com A/S |
| Registered | 2009-06-08 |
| Expires | 2027-06-30 (248d) |
Other .dk domains whose WHOIS registrant has the same name and postal address. Matched on a keyed hash: the registrant's details are not stored or shown. Covers only domains whose WHOIS we have fetched (refreshed about monthly).
No other domain with this registrant in our WHOIS data yet| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-18 07:10:45 shown | 720ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-30 15:51:15 | 573ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-19 23:18:04 | 1639ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-17 20:31:37 | 765ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-08-20 00:56:12 | 3372ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-07-20 04:33:32 | 846ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-07-09 02:39:42 | 1366ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-23 02:32:49 | 888ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-06-17 12:11:34 | 948ms | 2 NS 2 A 0 MX | ⚠️ Bogus |