otto-duborg.dk

📜 Historical scan 2026-09-27 13:48:04 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

otto-duborg.dk is a .dk domain served by 2 nameservers (dns1.viakom.de, dns2.viakom.de). It was already in the .dk zone when our tracking began on 16 June 2026. Mail is handled by ottoduborg-dk01b.mail.protection.outlook.com. 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.

🖥️ Nameservers#

2 records 81ms

Nameserver	IP addresses	PTR	ASN / ISP
dns1.viakom.de	85.215.250.53	dns1.viakom.de	AS8560 IONOS SE
dns2.viakom.de	2a01:4f9:c010:51de::1 95.217.133.30	ext-01.viakom.de ext-01.viakom.de	AS24940 Hetzner Online GmbH AS24940 Hetzner Online GmbH

🌍 A Records#

🌍

No A records found

📧 MX Records#

1 records 50ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	120s	ottoduborg-dk01b.mail.protection.outlook.com	2a01:111:f403:ca04::9 2a01:111:f403:ca38::8 2a01:111:f403:ca48::a 2a01:111:f403:ca48::c 52.101.209.28 52.101.68.15 52.101.68.29 52.101.91.153	mail-db7pr03cu00601.inbound.protection.outlook.com mail-wa4pr04cu00100.inbound.protection.outlook.com mail-miypr02cu00202.inbound.protection.outlook.com mail-miypr03cu00104.inbound.protection.outlook.com mail-cpjpr05cu00104.inbound.protection.outlook.com mail-db6pr03cu00107.inbound.protection.outlook.com mail-dbapr03cu00105.inbound.protection.outlook.com mail-matpr04cu00101.inbound.protection.outlook.com	AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	autodiscover.outlook.com → 52.98.154.136

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

4 records 382ms

TXT Record
brevo-code:025c5ffa1b760d5e2dd2c6b32f4dd306
google-site-verification=mBI6TvjtJn8a6OMB9WjU3NOQAQqk5GLLwBIQCdrikEg
gvicRXl+bNaIRzgnMnuAN/9PxoUu7D1YUbhJO8qex3gMT1Mb6xcpUbqYTD4VIrqrYyWUKKOzvbvx7cjswtanUg==
v=spf1 include:spf.protection.outlook.com include:_spf.prod.viakom.de -all

✉️ SPF#

Policy	Record (otto-duborg.dk)
-all (hard fail)	v=spf1 include:spf.protection.outlook.com include:_spf.prod.viakom.de -all

📨 DMARC#

Policy	Record (_dmarc.otto-duborg.dk)
p=none (monitor only)	v=DMARC1; p=none; rua=mailto:rua@dmarc.brevo.com

📬 MTA-STS#

✗ No MTA-STS policy — SMTP TLS not enforced

📈 TLSRPT#

✗ No TLSRPT record — no SMTP TLS failure reporting

📜 CAA Records#

✗ No CAA records — any CA may issue certificates

🧩 Web & zone#

latest probe, not this scan · checked 2026-10-08 22:15:41

www	NXDOMAIN
www vs bare domain	Neither resolves otto-duborg.dk: no address www.otto-duborg.dk: no address
Wildcard	No

✍️ DKIM keys#

1 found

Selector	CNAME	Key
selector1	selector1-ottoduborg-dk01b._domainkey.grenzhandel.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.

🔎 SPF check#

zone-wide SPF report

DNS lookups: 5/10 · policy: -all

No problems found

🔗 TLSA / DANE#

✗ No TLSA records — DANE not configured for HTTPS (_443) or MX (_25)

🔐 DNSSEC#

2062ms

Check	Result
Validation Status	🔓 Insecure
AD Flag (resolver validates)	✗ Not set
DS Record	✗ Not found
DNSKEY Record	✗ Not found
Flags	resolution failed: ncache nxrrset

🏷️ SOA#

0ms

Field	Value
Serial	2026062803
Primary NS (MNAME)	dns1.viakom.de
Responsible (RNAME)	hostmaster@viakom.de
Refresh	43200s
Retry	600s
Expire	2419200s
Minimum (neg-cache TTL)	3600s

📋 Registration#

✗ No registration data yet — queued for a WHOIS lookup

📋 WHOIS#

⏱️ Lookup Timing#

81ms

74ms

50ms

AAAA

80ms

TXT

382ms

CAA

60ms

HTTPS

49ms

TLSA

181ms

SOA

0ms

MTA-STS

117ms

DNSSEC

2062ms

SRV

109ms

Total

3093ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-08 22:15:41	1855ms	2 NS 0 A 1 MX	🔓 Insecure
2026-09-30 23:32:39	1249ms	2 NS 0 A 1 MX	🔓 Insecure
2026-09-30 02:43:04	1705ms	2 NS 0 A 1 MX	🔓 Insecure
2026-09-27 13:48:04 shown	3093ms	2 NS 0 A 1 MX	🔓 Insecure
2026-09-12 15:20:57	10887ms	2 NS 0 A 1 MX	🔓 Insecure
2026-07-01 06:27:21	1396ms	2 NS 0 A 1 MX	🔓 Insecure
2026-06-25 09:36:34	1492ms	2 NS 1 A 1 MX	🔓 Insecure
2026-06-17 13:45:53	5803ms	2 NS 0 A 0 MX	🔓 Insecure