bt.dk is a .dk domain served by 4 nameservers (ns-1028.awsdns-00.org, ns-1897.awsdns-45.co.uk, ns-432.awsdns-54.com and 1 more). It was registered on 10 November 1997 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 3.174.18.116 is hosted by Amazon.com, Inc. (AS16509) in United States. Mail is handled by aspmx.l.google.com, alt1.aspmx.l.google.com and 3 more. The zone is not DNSSEC-signed, 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.
| Nameserver | IP addresses | PTR | ASN / ISP |
|---|---|---|---|
| ns-1028.awsdns-00.org | — | — | — |
| ns-1897.awsdns-45.co.uk | — | — | — |
| ns-432.awsdns-54.com | — | — | — |
| ns-990.awsdns-59.net | — | — | — |
| TXT Record |
|---|
| DBO |
| docusign=5002b1be-d38d-49e8-a3c2-190fae7be914 |
| docusign=b9b660d9-2c70-4777-a009-567f973e9a7e |
| facebook-domain-verification=np3c30lskd6ibfnvwf2hjue73rzmgx |
| google-site-verification=6CW3_5qeaI5nW8LtLwAHMGR2bT_PxP076OuC0yWEvzw |
| google-site-verification=CSEMR5Bv4mkCmKuj3vPh8QfKsIq2gJAnZQyXraMr1yE |
| google-site-verification=DAQlWGGp4_r7f5XuAUepRlFITb-HAONt6icMCd-2UWw |
| google-site-verification=KOdo1HMlUXc5c93BkrCDZ1GHv9VRGDfKyXF1Zcl5UXI |
| google-site-verification=MFqaEEY-lwt2YqoUAzYHD3E7EovZhzWLPGJAf_ew-7Y |
| google-site-verification=nhtnq1e1Yfe-3YFgUtPjjP9RfrcJ7lNqYC49zpRFbVg |
| google-site-verification=oNbQkDAxc331-pW8FSA_2ne_jyB2bjwku1-kqiSVfik |
| google-site-verification=P5n1EArQ0PqORsBv9M3inR8T_LIMSNNEinGN3w1xdpo |
| google-site-verification=shLaIdX60al1iuN-5pjzXqAFnbEsfFyA4sCWBbjMEXc |
| google-site-verification=yYEJXlSACju11E3jv8h8re68BviCUin8BcfrzC_Ln78 |
| v=spf1 include:_u.bt.dk._spf.dmarcly.com include:mail.zendesk.com -all |
| Policy | Record (bt.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:_u.bt.dk._spf.dmarcly.com include:mail.zendesk.com -all |
| Policy | Record (_dmarc.bt.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; rua=mailto:5e440eaecbab4@ag.dmarcly.com; ruf=mailto:5e440eaecbab4@fo.dmarcly.com; sp=reject; adkim=s; pct=100; fo=1; |
| www CNAME | web.avis.api.no.cdn.cloudflare.net (all on cloudflare.net) |
| www vs bare domain | Different networks bt.dk: 65.9.106.122 65.9.106.36 65.9.106.89 65.9.106.92 (AS16509) (all like this)www.bt.dk: 104.18.22.107 104.18.23.107 2606:4700::6812:166b 2606:4700::6812:176b (AS13335) |
| Wildcard | No |
| Selector | CNAME | Key |
|---|---|---|
| — | RSA · ~2048 bit | |
| s1 | s1.domainkey.u276253.wl004.sendgrid.net | RSA · ~2048 bit |
| s2 | s2.domainkey.u276253.wl004.sendgrid.net | 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: 4/10 · policy: -all
No problems found| Check | Result |
|---|---|
| Validation Status | 🔓 Insecure |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✗ Not found |
| DNSKEY Record | ✗ Not found |
| Flags | unsigned answer |
| Field | Value |
|---|---|
| Serial | 1 |
| Primary NS (MNAME) | ns-1028.awsdns-00.org |
| Responsible (RNAME) | awsdns-hostmaster@amazon.com |
| Refresh | 7200s |
| Retry | 900s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 86400s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 1997-11-10 |
| Expires | 2026-12-31 (75d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-09-27 00:54:34 | 3503ms | 4 NS 4 A 5 MX | 🔓 Insecure |
| 2026-07-01 23:52:50 | 4639ms | 4 NS 4 A 5 MX | 🔓 Insecure |
| 2026-06-16 17:44:54 shown | 3062ms | 4 NS 4 A 5 MX | 🔓 Insecure |
| 2026-06-16 17:34:55 | 7523ms | 4 NS 4 A 5 MX | 🔓 Insecure |
| 2026-06-16 17:30:39 | 831ms | 4 NS 4 A 5 MX | 🔓 Insecure |