nem-byg.dk is a .dk domain served by 2 nameservers (ns1.curanet.dk, ns2.curanet.dk). It was registered on 1 November 2006 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 185.21.42.84 is hosted by team.blue Denmark A/S (AS48854) in Denmark. Mail is handled by nembyg-dk0i.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 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 |
|---|---|---|---|---|---|---|---|
| 185.21.42.84 | 3600s | vm1409.enterprisecloud.nu | AS48854 | team.blue Denmark A/S | 185.21.40.0/22 | 🇩🇰 Denmark | — |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | autodiscover.outlook.com → 40.104.116.8 |
| 🔶 Autoconfig | 185.21.42.84 |
| Service | Priority | Weight | Port | Target |
|---|---|---|---|---|
| _sipfederationtls._tcp | 100 | 1 | 5061 | sipfed.online.lync.com |
| TXT Record |
|---|
| _globalsign-domain-verification=GToe_SfRezS7afvYvyJzCb_tlPY_kFsj3sONQZBfPU |
| _globalsign-domain-verification=XGqDXVr1KEVwbJUYnfMu7iYSo8Tzs1YSnz8GdQ9rwE |
| v=spf1 a include:spf.protection.outlook.com include:centex.dk ip4:46.32.62.236 ip4:46.32.61.11 ip4:212.112.131.199 ip4:92.43.176.199 ip4:212.112.130.52 -all |
| Policy | Record (nem-byg.dk) |
|---|---|
| -all (hard fail) | v=spf1 a include:spf.protection.outlook.com include:centex.dk ip4:46.32.62.236 ip4:46.32.61.11 ip4:212.112.131.199 ip4:92.43.176.199 ip4:212.112.130.52 -all |
| Policy | Record (_dmarc.nem-byg.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject |
| Check | Result |
|---|---|
| Status | 🔒 Enforce |
| TXT record (_mta-sts) | ✓ Found |
| HTTPS policy | ✓ Valid |
| Mode | enforce |
| Policy ID | 172551520620Z |
| max_age | 86401s |
| Policy MX | nembyg-dk0i.mail.protection.outlook.com |
| Status | Report address (rua) |
|---|---|
| ✓ Enabled | — |
| www | Address record (no CNAME) |
| Wildcard | Yes: any name under the zone resolves |
| Denial of existence | NSEC3 · 1 iteration · 1-byte salt RFC 9276 recommends 0 iterations and no salt |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
| BIMI | v=BIMI1; l=https://www.nem-byg.dk/wp-content/uploads/2023/06/nembygLogo.svg |
| Selector | CNAME | Key |
|---|---|---|
| selector2 | selector2-nembyg-dk0i._domainkey.nembyg.onmicrosoft.com | 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: 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 | 2025102201 |
| Primary NS (MNAME) | ns1.curanet.dk |
| Responsible (RNAME) | hostmaster@curanet.dk |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 300s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 2006-11-01 |
| Expires | 2026-11-30 (44d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-04 06:44:39 | 1001ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-30 09:45:51 | 688ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-28 09:03:38 | 1011ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-27 00:06:59 | 1104ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-01 18:54:35 | 751ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-01 18:38:02 | 1099ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-25 12:34:09 shown | 2939ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-17 15:06:05 | 1072ms | 2 NS 1 A 1 MX | ❓ Unknown |