f5-networking.dk

📜 Historical scan 2026-07-21 13:19:18 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

f5-networking.dk is a .dk domain served by 2 nameservers (lady.ns.cloudflare.com, yahir.ns.cloudflare.com). It was registered on 17 September 2020 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Mail is handled by f5networking-dk0e.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 175ms

Nameserver	IP addresses	PTR	ASN / ISP
lady.ns.cloudflare.com	108.162.192.127 172.64.32.127 173.245.58.127 2606:4700:50::adf5:3a7f 2803:f800:50::6ca2:c07f 2a06:98c1:50::ac40:207f	lady.ns.cloudflare.com lady.ns.cloudflare.com lady.ns.cloudflare.com lady.ns.cloudflare.com lady.ns.cloudflare.com lady.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
yahir.ns.cloudflare.com	108.162.195.34 162.159.44.34 172.64.35.34 2606:4700:58::a29f:2c22 2803:f800:50::6ca2:c322 2a06:98c1:50::ac40:2322	yahir.ns.cloudflare.com yahir.ns.cloudflare.com yahir.ns.cloudflare.com yahir.ns.cloudflare.com yahir.ns.cloudflare.com yahir.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records#

🌍

No A records found

📧 MX Records#

1 records 177ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	f5networking-dk0e.mail.protection.outlook.com	2a01:111:f403:ca04::1 2a01:111:f403:ca04::5 2a01:111:f403:ca09::3 2a01:111:f403:ca09::6 52.101.68.29 52.101.68.5 52.101.73.15 52.101.73.2	mail-db7pr03cu00401.inbound.protection.outlook.com mail-db3pr0202cu00205.inbound.protection.outlook.com mail-am6pr04cu00303.inbound.protection.outlook.com mail-am4pr0401cu00106.inbound.protection.outlook.com mail-dbapr03cu00105.inbound.protection.outlook.com mail-du2pr03cu00105.inbound.protection.outlook.com mail-am9pr04cu00107.inbound.protection.outlook.com mail-as9pr07cu00302.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 293ms

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

📝 TXT Records#

2 records 502ms

TXT Record
MS=ms73439792
v=spf1 include:spf.protection.outlook.com -all

✉️ SPF#

Policy	Record (f5-networking.dk)
-all (hard fail)	v=spf1 include:spf.protection.outlook.com -all

📨 DMARC#

Policy	Record (_dmarc.f5-networking.dk)
p=none (monitor only)	v=DMARC1; p=none; rua=mailto:rua+wics4w439z4j@dmarcwise.email;

📬 MTA-STS#

✗ No MTA-STS policy — SMTP TLS not enforced

📈 TLSRPT#

Status	Report address (rua)
✓ Enabled	mailto:rua+wics4w439z4j@dmarcwise.email

📜 CAA Records#

✗ No CAA records — any CA may issue certificates

🧩 Web & zone#

latest probe, not this scan · checked 2026-10-08 07:23:19

www	NXDOMAIN
www vs bare domain	Neither resolves f5-networking.dk: no address www.f5-networking.dk: no address
Wildcard	No

✍️ DKIM keys#

2 found

Selector	CNAME	Key
selector1	selector1-f5networking-dk0e._domainkey.f5dk365.a-v1.dkim.mail.microsoft	RSA · ~2048 bit
selector2	selector2-f5networking-dk0e._domainkey.f5dk365.a-v1.dkim.mail.microsoft	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: 1/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

294ms

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	2410007196
Primary NS (MNAME)	lady.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-13 18:13:13

Field	Value
Registrar	CURANET A/S
Registered	2020-09-17
Expires	2027-09-30 (348d)

🔗 Same registrant#

0 domains

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

📋 WHOIS#

⏱️ Lookup Timing#

175ms

161ms

177ms

AAAA

172ms

TXT

502ms

CAA

188ms

HTTPS

156ms

TLSA

1060ms

SOA

0ms

MTA-STS

213ms

DNSSEC

294ms

SRV

293ms

Total

3316ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-09-29 22:53:31	2386ms	2 NS 0 A 1 MX	🔓 Insecure
2026-09-25 21:48:43	766ms	2 NS 0 A 1 MX	🔓 Insecure
2026-09-22 01:13:01	1737ms	2 NS 0 A 1 MX	🔓 Insecure
2026-08-28 08:46:19	1022ms	2 NS 0 A 1 MX	🔓 Insecure
2026-08-05 20:30:38	1703ms	2 NS 0 A 1 MX	🔓 Insecure
2026-07-21 13:19:18 shown	3316ms	2 NS 0 A 1 MX	🔓 Insecure
2026-07-01 23:37:42	1330ms	2 NS 0 A 1 MX	🔓 Insecure
2026-06-17 09:10:36	1231ms	2 NS 0 A 1 MX	🔓 Insecure