flexnu.dk - dns.ninja

`flexnu.dk`

DNSSEC	⚠️ Not signed
A	2606:4700:20::681a:a0a^{🇺🇸 Cloudflare2606:4700:20::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:20::681a:b0a^{🇺🇸 Cloudflare2606:4700:20::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:20::ac43:4511^{🇺🇸 Cloudflare2606:4700:20::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.26.10.10^{Cloudflare104.26.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.26.11.10^{Cloudflare104.26.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.69.17^{🇺🇸 Cloudflare172.67.64.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`byron.ns.cloudflare.com` ⭐
		A	2606:4700:58::a29f:2c43^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`byron.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c343^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`byron.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2343^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`byron.ns.cloudflare.com`
		A	108.162.195.67^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`byron.ns.cloudflare.com`
		A	162.159.44.67^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`byron.ns.cloudflare.com`
		A	172.64.35.67^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`byron.ns.cloudflare.com`
NS	`ursula.ns.cloudflare.com`
		A	2606:4700:50::a29f:26bf^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ursula.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c2bf^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`ursula.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:22bf^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`ursula.ns.cloudflare.com`
		A	108.162.194.191^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ursula.ns.cloudflare.com`
		A	162.159.38.191^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ursula.ns.cloudflare.com`
		A	172.64.34.191^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ursula.ns.cloudflare.com`
MX	`flexnu-dk.mail.protection.outlook.com` ⭐
		A	2a01:111:f403:ca04::^{🇮🇪 Microsoft2a01:111:f000::/36}
			PTR	`mail-db3pr0202cu00100.inbound.protection.outlook.com`
		A	2a01:111:f403:ca04::2^{🇮🇪 Microsoft2a01:111:f000::/36}
			PTR	`mail-du2pr03cu00102.inbound.protection.outlook.com`
		A	2a01:111:f403:ca04::4^{🇮🇪 Microsoft2a01:111:f000::/36}
			PTR	`mail-db4pr02cu00204.inbound.protection.outlook.com`
		A	2a01:111:f403:ca04::f^{🇮🇪 Microsoft2a01:111:f000::/36}
			PTR	`mail-db7pr03cu00507.inbound.protection.outlook.com`
		A	52.101.68.21^{🇮🇪 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-db4pr02cu00205.inbound.protection.outlook.com`
		A	52.101.73.1^{🇳🇱 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-am3pr04cu00501.inbound.protection.outlook.com`
		A	52.101.73.6^{🇳🇱 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-am6pr04cu00306.inbound.protection.outlook.com`
		A	52.101.73.28^{🇳🇱 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-am7pr05cu00204.inbound.protection.outlook.com`
TXT	`MS=ms43221920`
TXT	`google-site-verification=PzEjmQbbU3IQsa9f27GhwC_gN2btLgjcqLGuoJKmz2I`
TXT	`v=spf1 include:spf.protection.outlook.com include:amazonses.com include:send....`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.26.10.10, 104.26.11.10, 172.67.69.17
		IPv6 hints	2606:4700:20::681a:a0a, 2606:4700:20::681a:b0a, 2606:4700:20::ac43:4511
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=254, name=cloudflare-ech.com
SOA	`byron.ns.cloudflare.com`dns@cloudflare.com serial=2411231000

`dk`

	DNSSEC	🔒 Signed (DS record present)
	NS	`b.nic.dk` ⭐
	NS	`c.nic.dk`
	NS	`h.nic.dk`
	NS	`l.nic.dk`
	NS	`s.nic.dk`
	NS	`t.nic.dk`
	TXT	`DK zone updateEpoch 1785949921localtime Wed Aug 5 19:12:01 2026gmtime Wed Au...`
	SOA	`b.nic.dk`tech@punktum.dk serial=1785949921

🔒 HSTS Preload (+subdomains)

Same first word

flexnu.com

flexnu.dk

Similar names

nuflex.com

enflux.ro

luxfen.de

flunex.pro

luxfen.com

nuflex.nl

fenlux.com

nuflex.de

fluxen.de

fluxen.com.mx

lefunx.com

luxfen.lu

lexfun.org

unflex.com

flunex.lat

fluenx.com

lexfun.com

flunex.com

enflux.de

nuflex.co.za

enflux.org

xenful.com

fenlux.lu

nuflex.ca

enflux.com

fenlux.ch

flexun.com

neflux.com

funlex.com

fenlux.de

fluxen.com

nexful.com

DNS History

10 records (9 active, 1 former)

●NSbyron.ns.cloudflare.com2026-06-05 → 2026-08-05 · 2 obs

● 2026-06-05 07:57:38
● 2026-08-05 17:59:02

●NSursula.ns.cloudflare.com2026-06-05 → 2026-08-05 · 2 obs

● 2026-06-05 07:57:38
● 2026-08-05 17:59:02

●MXflexnu-dk.mail.protection.outlook.com2026-06-05 → 2026-08-05 · 2 obs

● 2026-06-05 07:57:38
● 2026-08-05 17:59:02

●A104.26.10.102026-08-05 → 2026-08-05 · 2 obs

○ 2026-06-05 07:57:38
● 2026-08-05 17:59:02

●A104.26.11.102026-08-05 → 2026-08-05 · 2 obs

○ 2026-06-05 07:57:38
● 2026-08-05 17:59:02

●A172.67.69.172026-08-05 → 2026-08-05 · 2 obs

○ 2026-06-05 07:57:38
● 2026-08-05 17:59:02

●A2606:4700:20::681a:a0a2026-08-05 → 2026-08-05 · 2 obs

○ 2026-06-05 07:57:38
● 2026-08-05 17:59:02

●A2606:4700:20::681a:b0a2026-08-05 → 2026-08-05 · 2 obs

○ 2026-06-05 07:57:38
● 2026-08-05 17:59:02

●A2606:4700:20::ac43:45112026-08-05 → 2026-08-05 · 2 obs

○ 2026-06-05 07:57:38
● 2026-08-05 17:59:02

○A76.76.21.212026-06-05 → 2026-06-05 · 2 obs

● 2026-06-05 07:57:38
○ 2026-08-05 17:59:02

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
dk	b.nic.dk, c.nic.dk, h.nic.dk, l.nic.dk...	12 records
flexnu.dk	byron.ns.cloudflare.com, ursula.ns.cloudflare.com	-

✅ Authoritative Response

Server:162.159.38.191

NS records: byron.ns.cloudflare.com, ursula.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for flexnu.dk (unsigned zone)

⏱️ Timing

Total: 523ms | Queries: -

📄 Records

Type	Count	Sample Data
A	3	`104.26.10.10, 104.26.11.10...`
AAAA	3	`2606:4700:20::681a:a0a, 2606:4700:20::ac43:4511...`
NS	2	`byron.ns.cloudflare.com, ursula.ns.cloudflare.com`
MX	1	`flexnu-dk.mail.protection.outlook.com (p`
TXT	3	`MS=ms43221920, google-site-verification=PzEjmQbbU3IQsa9...`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`byron.ns.cloudflare.com dns.cloudflare.c`

📌 Glue Records Collected

Total: 12

In-bailiwick: 12 (b.nic.dk, b.nic.dk, c.nic.dk...)

Analysis

IP Addresses

flexnu.dk points to 6 IP addresses, including 104.26.10.10, 104.26.11.10 and 172.67.69.17, plus 3 other.

audio.dentalmarketing.net, supersim.tel, 8fef257e7da4.8fef257e7da4.8fef257e7da4.8fef257e7da4.8fef257e7da4.8fef257e7da4.8fef257e7da4.8fef257e7da4.lakecumberlandpokerrun.net plus two other host names have IP numbers in common with flexnu.dk.

Name Servers

flexnu.dk uses two name servers for its delegation: byron.ns.cloudflare.com and ursula.ns.cloudflare.com.

The name server configuration of flexnu.dk is shared with other domains, for instance bewerbungsbild.ai, thomasnmartin.com, jonzkie.com and two others.

flexnu.dk shares at least some of its name servers with other domains, including dw-kuailian.com.cn, zearesort.com, thinkpharmacy.com.au and two others.

These name servers are frequently paired with the name servers amy.ns.cloudflare.com and randy.ns.cloudflare.com.

Hosts with 6 IP addresses each:

Hostname byron.ns.cloudflare.com directs to 108.162.195.67, 162.159.44.67 and 172.64.35.67 along with 3 other IP addresses.

Hostname ursula.ns.cloudflare.com directs to 108.162.194.191, 162.159.38.191 and 172.64.34.191 along with 3 other IP addresses.

Mail Servers

flexnu.dk uses one mail server — flexnu-dk.mail.protection.outlook.com.

flexnu-dk.mail.protection.outlook.com has 8 IP addresses: 52.101.68.21, 52.101.73.1, 52.101.73.6 plus 5 more.