o-strom.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 35.214.212.80 is hosted by Google Ireland Limited (AS43515) in The Netherlands. Mail is handled by mx1-dk.centerasecurity.dk, mx2-dk.centerasecurity.dk and 1 more. 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 |
|---|---|---|---|---|---|---|---|
| 35.214.212.80 | 600s | 80.212.214.35.bc.googleusercontent.com | AS43515 | Google Ireland Limited | 35.214.128.0/17 | 🇳🇱 The Netherlands | Groningen |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | autodiscover.outlook.com → 40.104.62.184 |
| TXT Record |
|---|
| ms-domain-verification=cd84fc08-b381-46c2-a204-e623a83aafea |
| MS=ms71539464 |
| MS=ms82666409 |
| v=spf1 ip4:93.176.75.4 include:sendgrid.net include:spf.protection.outlook.com include:spf.mailanyone.net include:_spf.centerasecurity.dk -all |
| Policy | Record (o-strom.dk) |
|---|---|
| -all (hard fail) | v=spf1 ip4:93.176.75.4 include:sendgrid.net include:spf.protection.outlook.com include:spf.mailanyone.net include:_spf.centerasecurity.dk -all |
| Policy | Record (_dmarc.o-strom.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; sp=reject; rua=mailto:66d6b7c87df90@dmarc-dk.centerasecurity.com; |
| www | 35.214.212.80 (AS43515) (address records, no CNAME) |
| www vs bare domain | Same network |
| Wildcard | No |
| Denial of existence | NSEC3 · 0 iterations · no salt RFC 9276 ✓ |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
| Selector | CNAME | Key |
|---|---|---|
| s1 | s1.domainkey.u8608044.wl045.sendgrid.net | RSA · ~1024 bit below 2048 bit |
| s2 | s2.domainkey.u8608044.wl045.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: 5/10 · policy: -all
No problems found| Service / Owner | Type | Cert association |
|---|---|---|
| SMTP _25._tcp.mx1-dk.centerasecurity.dk | DANE-EE · SPKI · SHA-256 | D4C349E7B72F5CF4A9CEA358F98947C2… |
| SMTP _25._tcp.mx1-dk.centerasecurity.dk | DANE-EE · SPKI · SHA-256 | 56315B43B892E9AEE184919EC6A5821C… |
| SMTP _25._tcp.mx2-dk.centerasecurity.dk | DANE-EE · SPKI · SHA-256 | 56315B43B892E9AEE184919EC6A5821C… |
| SMTP _25._tcp.mx2-dk.centerasecurity.dk | DANE-EE · SPKI · SHA-256 | D4C349E7B72F5CF4A9CEA358F98947C2… |
| SMTP _25._tcp.mx3-dk.centerasecurity.dk | DANE-EE · SPKI · SHA-256 | D4C349E7B72F5CF4A9CEA358F98947C2… |
| SMTP _25._tcp.mx3-dk.centerasecurity.dk | DANE-EE · SPKI · SHA-256 | 56315B43B892E9AEE184919EC6A5821C… |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026081904 |
| Primary NS (MNAME) | ns01.one.com |
| Responsible (RNAME) | hostmaster@one.com |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 600s |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-15 20:35:21 | 2283ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-09-15 12:14:51 | 2197ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-09-10 22:28:46 | 1729ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-08-31 04:54:02 | 1552ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-08-19 15:33:04 shown | 1464ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-08-15 06:17:38 | 3592ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-08-07 14:47:55 | 1368ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-07-16 10:33:01 | 1457ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-06-22 10:23:25 | 790ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-06-17 14:27:22 | 3325ms | 2 NS 1 A 3 MX | 🔒 Secure |