impactarc.dk is a .dk domain served by 4 nameservers (ns1.simply.com, ns2.simply.com, ns3.simply.com and 1 more). It was registered on 2 June 2021 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 15.197.253.240 is hosted by Amazon.com, Inc. (AS16509) in United States. The zone is DNSSEC-signed and validates, has no 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.
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | salty-sorrel-i4fivmsglzv46eoqymwkehtw.herokudns.com → 3.33.249.164 |
| 🔶 Autoconfig | salty-sorrel-i4fivmsglzv46eoqymwkehtw.herokudns.com → 3.33.249.164 |
| www CNAME | salty-sorrel-i4fivmsglzv46eoqymwkehtw.herokudns.com (all on herokudns.com) |
| www vs bare domain | Same network impactarc.dk: 15.197.253.240 3.33.249.164 52.223.53.203 94.231.103.100 (AS16509 AS48854) www.impactarc.dk: 15.197.253.240 3.33.249.164 52.223.53.203 99.83.185.157 (AS16509) |
| 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 |
| Type | Name | Value |
|---|---|---|
| CNAME | _acme-challenge.impactarc.dk | salty-sorrel-i4fivmsglzv46eoqymwkehtw.herokudns.com |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026100100 |
| Primary NS (MNAME) | ns1.simply.com |
| Responsible (RNAME) | hostmaster@simply.com |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 3600s |
| Field | Value |
|---|---|
| Registrar | Simply.com A/S |
| Registered | 2021-06-02 |
| Expires | 2027-06-30 (256d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-02 06:36:25 shown | 2517ms | 4 NS 5 A 0 MX | 🔒 Secure |
| 2026-10-01 06:27:20 | 589ms | 4 NS 5 A 0 MX | 🔒 Secure |
| 2026-09-07 19:23:22 | 863ms | 4 NS 5 A 0 MX | 🔒 Secure |
| 2026-09-04 02:54:28 | 775ms | 4 NS 5 A 0 MX | 🔒 Secure |
| 2026-08-27 17:03:02 | 1293ms | 4 NS 5 A 0 MX | 🔒 Secure |
| 2026-07-22 09:58:03 | 25042ms | 4 NS 5 A 0 MX | 🔒 Secure |
| 2026-07-08 14:50:52 | 41185ms | 4 NS 5 A 0 MX | 🔒 Secure |
| 2026-06-28 08:51:36 | 929ms | 4 NS 5 A 0 MX | 🔒 Secure |
| 2026-06-24 05:14:46 | 968ms | 4 NS 5 A 0 MX | ⚠️ Bogus |
| 2026-06-22 10:34:15 | 1178ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-20 03:19:51 | 1806ms | 4 NS 5 A 0 MX | 🔒 Secure |
| 2026-06-20 01:39:38 | 2136ms | 4 NS 5 A 0 MX | 🔒 Secure |
| 2026-06-18 13:29:10 | 1562ms | 4 NS 5 A 0 MX | 🔒 Secure |
| 2026-06-17 14:30:30 | 358ms | 0 NS 0 A 0 MX | ❓ Unknown |