trustworks.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 21 January 2014 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 54.228.4.16 is hosted by Amazon.com, Inc. (AS16509) in Ireland. Mail is handled by trustworks-dk.mail.protection.outlook.com. The zone is DNSSEC-signed and validates, has no DMARC policy and has no IPv6 address. 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 |
|---|---|---|---|---|---|---|---|
| 54.228.4.16 | 43200s | ec2-54-228-4-16.eu-west-1.compute.amazonaws.com | AS16509 | Amazon.com, Inc. | 54.228.0.0/14 | 🇮🇪 Ireland | Dublin |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | autodiscover.outlook.com → 52.98.154.152 |
| 🔶 Autoconfig | 77.111.240.172 |
| Service | Priority | Weight | Port | Target |
|---|---|---|---|---|
| _sipfederationtls._tcp | 0 | 1 | 5061 | sipfed.online.lync.com |
| TXT Record |
|---|
| anthropic-domain-verification-a0228s=Q7FQ9TeWDxgtexJOB5d9MNn8T |
| B9280FAE3E893305A70D12E8F125F36422AB41795F64D6F334A739DF34F0FFAE |
| brevo-code:727f18a6403fdac0dc6346e77f876f84 |
| MS=ms60808943 |
| qkbjuqvxbr |
| v=spf1 ip4:78.153.178.166 include:spf.protection.outlook.com -all |
| Policy | Record (trustworks.dk) |
|---|---|
| -all (hard fail) | v=spf1 ip4:78.153.178.166 include:spf.protection.outlook.com -all |
| www CNAME | d3n2qvod35zpzn.cloudfront.net (all on cloudfront.net) |
| www vs bare domain | Different networks trustworks.dk: 195.47.247.18 (AS51468) (all like this)www.trustworks.dk: 3.174.18.106 3.174.18.115 3.174.18.73 3.174.18.95 (AS16509) |
| Wildcard | No |
| Denial of existence | NSEC3 · 0 iterations · no salt RFC 9276 ✓ |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
| Selector | CNAME | Key |
|---|---|---|
| — | RSA · ~1024 bit below 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: 1/10 · policy: -all
No problems found| Type | Name | Value |
|---|---|---|
| TXT | _acme-challenge.trustworks.dk | 4fUg4rX6Rqvq4Ra7cmFOTzCWiPHaFAPNKnAvxHqfMKw |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026062401 |
| Primary NS (MNAME) | ns01.one.com |
| Responsible (RNAME) | hostmaster@one.com |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 600s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 2014-01-21 |
| Expires | 2027-01-31 (103d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-03 02:31:31 | 3659ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-29 02:01:24 | 1265ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-26 00:54:02 | 908ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-24 14:41:29 | 937ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-23 14:13:24 | 964ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-22 07:28:46 | 1559ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-27 10:55:42 | 2679ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-25 18:12:12 | 1437ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-13 02:42:56 | 1671ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-04 22:00:43 | 3124ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-26 10:28:27 | 772ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-25 15:04:49 | 736ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-25 03:28:04 shown | 1310ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-17 22:42:41 | 991ms | 2 NS 1 A 1 MX | 🔒 Secure |