maersktankers.dk is a .dk domain served by 3 nameservers (nsa.perf1.fr, nsb.perf1.com, nsc.perf1.com). It was registered on 12 February 1997 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 152.89.172.56 is hosted by Nameshield SAS (AS209510) in France. Mail is handled by maersktankers-dk.mail.protection.outlook.com. The zone is not DNSSEC-signed, publishes a DMARC policy and is reachable over IPv6. 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 |
|---|---|---|---|---|---|---|---|
| 152.89.172.56 | 43200s | cdn.perf1.com | AS209510 | Nameshield SAS | 152.89.172.0/22 | 🇫🇷 France | — |
| 81.92.94.54 | 43200s | cdn.perf1.com | AS20756 | Nameshield SAS | 81.92.80.0/20 | 🇫🇷 France | Angers |
| 81.92.95.55 | 43200s | cdn.perf1.com | AS20756 | Nameshield SAS | 81.92.80.0/20 | 🇫🇷 France | Angers |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | autodiscover.outlook.com → 40.104.116.24 |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2a01:c8:100::54 | 43200s | cdn.perf1.com | AS20756 | Nameshield SAS | 2a01:c8:0:0:0:0:0:0/32 | 🇫🇷 France | — |
| 2a01:c8:101::55 | 43200s | cdn.perf1.com | AS20756 | Nameshield SAS | 2a01:c8:0:0:0:0:0:0/32 | 🇫🇷 France | — |
| 2a09:35c0:102::56 | 43200s | cdn.perf1.com | AS209510 | Nameshield SAS | 2a09:35c0:100:0:0:0:0:0/40 | 🇫🇷 France | — |
| Service | Priority | Weight | Port | Target |
|---|---|---|---|---|
| _sipfederationtls._tcp | 100 | 1 | 5061 | sipfed.online.lync.com |
| TXT Record |
|---|
| MS=ms71856728 |
| v=spf1 ip4:213.214.133.163 include:spf.protection.outlook.com -all |
| Policy | Record (maersktankers.dk) |
|---|---|
| -all (hard fail) | v=spf1 ip4:213.214.133.163 include:spf.protection.outlook.com -all |
| Policy | Record (_dmarc.maersktankers.dk) |
|---|---|
| p=quarantine | v=DMARC1; p=quarantine; sp=quarantine; ruf=mailto:Malicious@maersktankers.com; rua=mailto:Malicious@maersktankers.com; pct=100 |
| www CNAME | saspresence.perf1.com (all on perf1.com) |
| www vs bare domain | Same network maersktankers.dk: 152.89.172.56 81.92.94.54 81.92.95.55 2a01:c8:100::54 (AS20756 AS209510) www.maersktankers.dk: 185.65.58.55 81.92.91.56 (AS20756) |
| Wildcard | No |
| Selector | CNAME | Key |
|---|---|---|
| selector1 | selector1-maersktankers-dk._domainkey.maersktankers.onmicrosoft.com | RSA · ~1024 bit below 2048 bit |
| selector2 | selector2-maersktankers-dk._domainkey.maersktankers.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 | 🔓 Insecure |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✗ Not found |
| DNSKEY Record | ✗ Not found |
| Flags | unsigned answer |
| Field | Value |
|---|---|
| Serial | 2026051812 |
| Primary NS (MNAME) | nsa.perf1.fr |
| Responsible (RNAME) | technical@nameshield.net |
| Refresh | 28800s |
| Retry | 7200s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 7200s |
| Field | Value |
|---|---|
| Registrar | NAMESHIELD |
| Registered | 1997-02-12 |
| Expires | 2027-03-31 (154d) |
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 |
|---|---|---|---|
| 2026-09-30 03:24:03 | 1754ms | 3 NS 3 A 1 MX | 🔓 Insecure |
| 2026-09-04 08:16:01 | 981ms | 3 NS 3 A 1 MX | 🔓 Insecure |
| 2026-08-26 20:34:49 shown | 1421ms | 3 NS 3 A 1 MX | 🔓 Insecure |
| 2026-06-19 22:54:44 | 841ms | 3 NS 3 A 1 MX | 🔓 Insecure |
| 2026-06-18 06:55:39 | 1297ms | 3 NS 3 A 1 MX | 🔓 Insecure |