improsec.dk is a .dk domain served by 6 nameservers (ns10.dnsadmin.dk, ns11.dns-admin.dk, ns12.dnsadmin.dk and 3 more). It was registered on 22 February 2015 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 198.185.159.144 is hosted by Squarespace, Inc. (AS53831) in United States. Mail is handled by improsec-dk.mail.protection.outlook.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 |
|---|---|---|---|---|---|---|---|
| 198.185.159.144 | 60s | — | AS53831 | Squarespace, Inc. | 198.185.159.0/24 | 🇺🇸 United States | New York |
| 198.185.159.145 | 60s | — | AS53831 | Squarespace, Inc. | 198.185.159.0/24 | 🇺🇸 United States | — |
| 198.49.23.144 | 60s | — | AS53831 | Squarespace, Inc. | 198.49.23.0/24 | 🇺🇸 United States | — |
| 198.49.23.145 | 60s | — | AS53831 | Squarespace, Inc. | 198.49.23.0/24 | 🇺🇸 United States | — |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | autodiscover.outlook.com → 52.98.149.152 |
| Service | Priority | Weight | Port | Target |
|---|---|---|---|---|
| _sipfederationtls._tcp | 100 | 1 | 5061 | sipfed.online.lync.com |
| TXT Record |
|---|
| MS=ms97085155 |
| v=spf1 include:spf.protection.outlook.com -all |
| Policy | Record (improsec.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:spf.protection.outlook.com -all |
| Policy | Record (_dmarc.improsec.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; rua=mailto:60103bc4cb787@dmarc.centerasecurity.com; ruf=mailto:k7pgldwx@fr.dmarcian-eu.com; sp=reject; ri=84600 |
| www CNAME | ext-cust.squarespace.com (all on squarespace.com) |
| www vs bare domain | Same network improsec.dk: 198.185.159.144 198.185.159.145 198.49.23.144 198.49.23.145 (AS53831) www.improsec.dk: 198.185.159.144 198.185.159.145 198.49.23.144 198.49.23.145 (AS53831) |
| Wildcard | No |
| Denial of existence | NSEC3 · 0 iterations · 8-byte salt · opt-out RFC 9276 recommends 0 iterations and no salt |
| CDS / CDNSKEY | Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY |
| Selector | CNAME | Key |
|---|---|---|
| selector1 | selector1-improsec-dk._domainkey.itrelation.onmicrosoft.com | 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: 1/10 · 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 | 2009010281 |
| Primary NS (MNAME) | ns20.digicertdns.com |
| Responsible (RNAME) | dns@digicertdns.com |
| Refresh | 43200s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 180s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 2015-02-22 |
| Expires | 2033-02-28 (2323d) |
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).
Showing 100 of 141.
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-19 02:15:53 shown | 1303ms | 6 NS 4 A 1 MX | 🔒 Secure |
| 2026-10-09 18:03:43 | 4740ms | 6 NS 4 A 1 MX | 🔒 Secure |
| 2026-10-08 15:40:15 | 3154ms | 6 NS 4 A 1 MX | 🔒 Secure |
| 2026-10-07 15:03:48 | 2587ms | 6 NS 4 A 1 MX | 🔒 Secure |
| 2026-10-06 14:42:06 | 4429ms | 6 NS 4 A 1 MX | 🔒 Secure |
| 2026-10-04 08:11:21 | 1583ms | 6 NS 4 A 1 MX | 🔒 Secure |
| 2026-10-03 08:08:52 | 1706ms | 6 NS 4 A 1 MX | 🔒 Secure |
| 2026-09-30 07:47:24 | 817ms | 6 NS 4 A 1 MX | 🔒 Secure |
| 2026-09-25 18:15:03 | 1554ms | 6 NS 4 A 1 MX | 🔒 Secure |
| 2026-09-23 22:15:39 | 1139ms | 6 NS 4 A 1 MX | 🔒 Secure |
| 2026-09-20 12:49:02 | 2857ms | 6 NS 4 A 1 MX | 🔒 Secure |
| 2026-09-12 04:40:14 | 1804ms | 6 NS 4 A 1 MX | 🔒 Secure |
| 2026-09-08 11:34:21 | 2613ms | 6 NS 4 A 1 MX | 🔒 Secure |
| 2026-09-03 18:41:56 | 1489ms | 6 NS 4 A 1 MX | 🔒 Secure |
| 2026-08-28 21:00:06 | 2240ms | 6 NS 4 A 1 MX | 🔒 Secure |
| 2026-08-21 16:53:04 | 8282ms | 6 NS 4 A 1 MX | 🔒 Secure |
| 2026-08-20 16:40:47 | 3042ms | 6 NS 4 A 1 MX | 🔒 Secure |
| 2026-08-17 01:02:41 | 1580ms | 6 NS 4 A 1 MX | 🔒 Secure |
| 2026-08-09 04:02:55 | 1800ms | 6 NS 4 A 1 MX | 🔒 Secure |
| 2026-08-02 13:54:42 | 2441ms | 6 NS 4 A 1 MX | 🔒 Secure |
| 2026-07-21 07:48:06 | 2582ms | 6 NS 4 A 1 MX | 🔒 Secure |
| 2026-07-20 05:47:09 | 2457ms | 6 NS 4 A 1 MX | 🔒 Secure |
| 2026-07-08 15:18:03 | 3090ms | 6 NS 4 A 1 MX | 🔒 Secure |
| 2026-07-07 02:34:25 | 2941ms | 6 NS 4 A 1 MX | 🔒 Secure |
| 2026-07-03 19:04:15 | 2817ms | 6 NS 4 A 1 MX | 🔒 Secure |