index100.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 6 October 2017 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 77.111.240.140 is hosted by One.com A/S (AS51468) in Denmark. Mail is handled by index100-dk.mail.protection.outlook.com. The zone is DNSSEC-signed and validates, publishes a DMARC policy and is reachable over IPv6. 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 |
|---|---|---|---|---|---|---|---|
| 77.111.240.140 | 3600s | webcluster13.webpod11-cph3.one.com | AS51468 | One.com A/S | 77.111.240.0/22 | 🇩🇰 Denmark | Copenhagen |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | autodiscover.outlook.com → 40.104.116.40 |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2a02:2350:5:102:65:fe7a:162e:701c | 3600s | — | AS51468 | One.com A/S | 2a02:2350:0:0:0:0:0:0/32 | 🇩🇰 Denmark | Copenhagen |
| Service | Priority | Weight | Port | Target |
|---|---|---|---|---|
| _sipfederationtls._tcp | 100 | 1 | 5061 | sipfed.online.lync.com |
| TXT Record |
|---|
| MS=ms42966309 |
| v=spf1 include:spf.protection.outlook.com -all |
| Policy | Record (index100.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:spf.protection.outlook.com -all |
| Policy | Record (_dmarc.index100.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; rua=mailto:logs@index100.dk |
| www | 77.111.240.140 2a02:2350:5:102:65:fe7a:162e:701c (AS51468) (address records, no CNAME) |
| www vs bare domain | Same network index100.dk: 77.111.240.140 2a02:2350:5:102:65:fe7a:162e:701c (AS51468) www.index100.dk: 77.111.240.140 2a02:2350:5:102:65:fe7a:162e:701c (AS51468) |
| Wildcard | No |
| Denial of existence | NSEC3 · 0 iterations · no salt RFC 9276 ✓ |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
| Selector | CNAME | Key |
|---|---|---|
| selector1 | selector1-index100-dk._domainkey.index100.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: 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 | 2026101301 |
| 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 | 2017-10-06 |
| Expires | 2027-10-31 (379d) |
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).
No other domain with this registrant in our WHOIS data yet| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-14 19:40:38 shown | 1356ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-15 13:35:36 | 1027ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-11 14:20:56 | 651ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-28 01:32:48 | 1249ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-23 11:56:01 | 3367ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-15 05:16:45 | 6110ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-07 17:32:46 | 5424ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-14 15:08:03 | 1888ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-09 03:40:13 | 1499ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-02 18:42:45 | 1313ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-26 12:22:42 | 1912ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-17 13:36:19 | 802ms | 2 NS 1 A 1 MX | 🔒 Secure |