opennet.dk

📜 Historical scan 2026-09-26 01:38:56 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

opennet.dk is a .dk domain served by 4 nameservers (ns1.dnsimple.com, ns2.dnsimple.com, ns3.dnsimple.com and 1 more). It was registered on 21 March 2001 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 3.121.27.182 is hosted by Amazon.com, Inc. (AS16509) in Germany. Mail is handled by opennet-dk.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#

4 records 60ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.dnsimple.com	199.247.152.53 2620:111:8004::53	— —	AS32771 DNSimple Corporation AS32771 DNSimple Corporation
ns2.dnsimple.com	199.247.153.53 2620:111:8005::53	— —	AS32771 DNSimple Corporation AS32771 DNSimple Corporation
ns3.dnsimple.com	199.247.154.53 2620:111:8006::53	— —	AS32771 DNSimple Corporation AS32771 DNSimple Corporation
ns4.dnsimple.com	199.247.155.53 2620:111:8007::53	— —	AS32771 DNSimple Corporation AS32771 DNSimple Corporation

🌍 A Records#

1 records 56ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
3.121.27.182	600s	ec2-3-121-27-182.eu-central-1.compute.amazonaws.com	AS16509	Amazon.com, Inc.	3.96.0.0/11	🇩🇪 Germany	Frankfurt am Main

📧 MX Records#

1 records 61ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	opennet-dk.mail.protection.outlook.com	2a01:111:f403:ca04::d 2a01:111:f403:ca04::e 2a01:111:f403:ca21::8 2a01:111:f403:ca48::12 52.101.103.162 52.101.103.36 52.101.209.28 52.101.91.21	mail-db6pr03cu00105.inbound.protection.outlook.com mail-db8pr02cu00106.inbound.protection.outlook.com mail-matpr04cu00100.inbound.protection.outlook.com mail-miypr05cu00202.inbound.protection.outlook.com mail-miypr03cu00202.inbound.protection.outlook.com mail-miypr05cu00104.inbound.protection.outlook.com mail-cpjpr05cu00104.inbound.protection.outlook.com mail-matpr05cu00105.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 → 40.104.116.40

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records#

1 records 117ms

Service	Priority	Weight	Port	Target
_sipfederationtls._tcp	100	1	5061	sipfed.online.lync.com

📝 TXT Records#

15 records 303ms

TXT Record
_globalsign-domain-verification=hPtpqez12Bo_gjWFFCaEe0R2L3P74g5kgs2UBhVC8_
_globalsign-domain-verification=j2SwozLhXFzFoxW_NuU0BgMudU0TMCoEWe2oH_TDRO
_globalsign-domain-verification=Lmy78NdBaQfcxwkH1EOmXtdOyApr3Cz9Vq9iBfpmzf
_globalsign-domain-verification=uPjQZ8TIYtJZYeRyQaqKBZHrF4CM5qtoJ02Wvkt735
_globalsign-domain-verification=UqXnKUjlDGnFBZxIkA5CLJocXenb5yozq5paNxSNsw
_globalsign-domain-verification=Z5pPzmv-_s_XJ3ivQTGGwKRneqIWlK1ryTpotKOhYe
2022-05-23
anthropic-domain-verification-rv3d0v=HuEWbrQoHz4NyF3nC5yCWZzpP
apple-domain-verification=1Lbv5ouZxJ8lREpw
cursor-domain-verification-t0a0hd=XkgpEV3YbZPJmsnSbuvOyxaet
gamma-domain-verification-v7ja97=Y3wMeurSL75JqNNDT6KuiMd31
MS=ms98759154
openai-domain-verification=dv-S1YVmexgyBe4k6IjrCcwC1dw
twilio-domain-verification=24f31ef64b7d7c825980ffece05dd1f8
v=spf1 include:spf.protection.outlook.com include:amazonses.com include:emsd1.com include:mx10.norlys.dk include:mx20.norlys.dk -all

✉️ SPF#

Policy	Record (opennet.dk)
-all (hard fail)	v=spf1 include:spf.protection.outlook.com include:amazonses.com include:emsd1.com include:mx10.norlys.dk include:mx20.norlys.dk -all

📨 DMARC#

Policy	Record (_dmarc.opennet.dk)
p=reject	v=DMARC1; p=reject; rua=mailto:dmarc_agg@vali.email;

📬 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 03:00:21

www	3.121.27.182 (AS16509) (address records, no CNAME)
www vs bare domain	Same network opennet.dk: 3.121.27.182 (AS16509) www.opennet.dk: 3.121.27.182 (AS16509)
Wildcard	No

✍️ DKIM keys#

1 found

Selector	CNAME	Key
selector1	selector1-opennet-dk._domainkey.dkopennet.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.

🔎 SPF check#

zone-wide SPF report

DNS lookups: 7/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

129ms

Check	Result
Validation Status	🔓 Insecure
AD Flag (resolver validates)	✗ Not set
DS Record	✗ Not found
DNSKEY Record	✗ Not found
Flags	unsigned answer

🏷️ SOA#

0ms

Field	Value
Serial	1603795316
Primary NS (MNAME)	ns1.dnsimple.com
Responsible (RNAME)	admin@dnsimple.com
Refresh	86400s
Retry	7200s
Expire	604800s
Minimum (neg-cache TTL)	300s

📋 Registration#

WHOIS fetched 2026-10-08 21:20:54

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2001-03-21
Expires	2027-03-31 (161d)

📋 WHOIS#

⏱️ Lookup Timing#

60ms

56ms

61ms

AAAA

47ms

TXT

303ms

CAA

45ms

HTTPS

56ms

TLSA

379ms

SOA

0ms

MTA-STS

73ms

DNSSEC

129ms

SRV

117ms

Total

4262ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-09-30 00:42:57	5973ms	4 NS 1 A 1 MX	🔓 Insecure
2026-09-26 01:38:56 shown	4262ms	4 NS 1 A 1 MX	🔓 Insecure
2026-09-14 16:07:09	6200ms	4 NS 1 A 1 MX	🔓 Insecure
2026-08-28 03:03:06	15072ms	4 NS 1 A 1 MX	🔓 Insecure
2026-08-06 14:21:34	6969ms	4 NS 1 A 1 MX	🔓 Insecure
2026-07-27 19:07:55	6689ms	4 NS 1 A 1 MX	🔓 Insecure
2026-07-14 08:03:11	6333ms	4 NS 1 A 1 MX	🔓 Insecure
2026-06-18 08:01:51	5053ms	4 NS 1 A 1 MX	🔓 Insecure