degroot.dk is a .dk domain served by 4 nameservers (ns1.simply.com, ns2.simply.com, ns3.simply.com and 1 more). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 93.191.156.213 is hosted by team.blue Denmark A/S (AS48854) in Denmark. Mail is handled by mx01.mail.icloud.com, mx02.mail.icloud.com. The zone is DNSSEC-signed and validates, publishes a DMARC policy and has no IPv6 address. 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 |
|---|---|---|---|---|---|---|---|
| 93.191.156.213 | 3600s | linux312.unoeuro.com | AS48854 | team.blue Denmark A/S | 93.191.152.0/21 | 🇩🇰 Denmark | — |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | 93.191.156.213 |
| 🔶 Autoconfig | 93.191.156.213 |
| Service | Priority | Weight | Port | Target |
|---|---|---|---|---|
| _autodiscover._tcp | 10 | 10 | 443 | maildiscover.simply.com |
| TXT Record |
|---|
| apple-domain=6dMbo1otefrzsS8w |
| v=spf1 redirect=icloud.com |
| Policy | Record (degroot.dk) |
|---|---|
| redirect=icloud.com | v=spf1 redirect=icloud.com |
| Policy | Record (_dmarc.degroot.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; rua=mailto:dmarc@robot.simply.com; ruf=mailto:dmarc@robot.simply.com; |
| www | 93.191.156.213 (AS48854) (address records, no CNAME) |
| www vs bare domain | Same network |
| Wildcard | Yes: any name under the zone resolves |
| Denial of existence | NSEC zone can be walked (all names enumerable) |
| CDS / CDNSKEY | Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY |
DNS lookups: 5/10 · policy: ~all
No problems found| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026101200 |
| Primary NS (MNAME) | ns1.simply.com |
| Responsible (RNAME) | hostmaster@simply.com |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 3600s |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-13 04:51:15 shown | 868ms | 4 NS 1 A 2 MX | 🔒 Secure |
| 2026-10-01 21:03:37 | 946ms | 4 NS 1 A 2 MX | 🔒 Secure |
| 2026-09-29 20:42:56 | 495ms | 4 NS 1 A 2 MX | 🔒 Secure |
| 2026-09-27 13:23:23 | 612ms | 4 NS 1 A 2 MX | 🔒 Secure |
| 2026-08-27 10:29:36 | 791ms | 4 NS 1 A 2 MX | 🔒 Secure |
| 2026-08-26 12:36:21 | 854ms | 4 NS 1 A 2 MX | 🔒 Secure |
| 2026-08-26 03:28:39 | 726ms | 4 NS 1 A 2 MX | 🔒 Secure |
| 2026-08-20 23:18:21 | 33639ms | 4 NS 1 A 2 MX | 🔒 Secure |
| 2026-06-22 05:05:56 | 720ms | 4 NS 1 A 2 MX | 🔒 Secure |
| 2026-06-17 01:42:19 | 3009ms | 4 NS 1 A 2 MX | 🔒 Secure |
| 2026-06-17 01:30:50 | 839ms | 4 NS 1 A 2 MX | 🔒 Secure |