`dokter.nu`

DNSSEC	⚠️ Not signed
A	2606:4700:3033::ac43:9fab^{🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3036::6815:e8d^{🇺🇸 Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.14.141^{Cloudflare104.21.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.159.171^{🇺🇸 Cloudflare172.67.144.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`derek.ns.cloudflare.com` ⭐
		A	2606:4700:58::adf5:3b9a^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`derek.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c19a^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`derek.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:219a^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`derek.ns.cloudflare.com`
		A	108.162.193.154^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`derek.ns.cloudflare.com`
		A	172.64.33.154^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`derek.ns.cloudflare.com`
		A	173.245.59.154^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`derek.ns.cloudflare.com`
NS	`june.ns.cloudflare.com`
		A	2606:4700:50::adf5:3ab0^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`june.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c0b0^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`june.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:20b0^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`june.ns.cloudflare.com`
		A	108.162.192.176^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`june.ns.cloudflare.com`
		A	172.64.32.176^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`june.ns.cloudflare.com`
		A	173.245.58.176^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`june.ns.cloudflare.com`
MX	`mail.dokter.nu` ⭐
TXT	`google-site-verification=_fVYIRrlDMZ3zMS8oTa3iiMrIeuvgcsmeH42cGs5Yuk`
TXT	`v=spf1 a mx include:_spf.google.com include:_spf.elasticemail.com ~all`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.14.141, 172.67.159.171
		IPv6 hints	2606:4700:3033::ac43:9fab, 2606:4700:3036::6815:e8d
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=4, name=cloudflare-ech.com
SOA	`derek.ns.cloudflare.com`dns@cloudflare.com serial=2404967921

`nu`

	DNSSEC	🔒 Signed (DS record present)
	NS	`catcher-in-the-rye.nic.nu` ⭐
	NS	`a.ns.nu`
	NS	`c.ns.nu`
	NS	`d.ns.nu`
	NS	`m.ns.nu`
	NS	`y.ns.nu`
	NS	`z.ns.nu`
	TXT	`NU zone update: 2026-07-15 09:49:11 +0000 (EPOCH 1784108951) (auto)`
	TXT	`id:3390cacc-3a7c-4bab-892d-21a5ae1aa51c`
	SOA	`catcher-in-the-rye.nic.nu`hostmaster@nic.nu serial=1784109002

Same first word

dokter.com.mx

dokter.nl

dokter.net

dokter.org

dokter.ch

dokter.link

dokter.gent

dokter.no

dokter.mobi

dokter.nu

dokter.de

dokter.online

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dokter.at

dokter.in

dokter.lu

dokter.com

dokter.or.id

dokter.ru

dokter.amsterdam

dokter.my

dokter.be

dokter.eu

dokter.co

dokter.id

Similar names

koerdt.com

dekort.com.au

koerdt.org

dekort.nl

dekort.com

edotrk.com

dortek.ru

dektor.com

dekort.com.ua

dokert.com

dotker.org

dekort.net

redkot.ru

ordtek.com

redtok.com

drotek.fr

terkod.com

dorket.com

drotek.eu

ktrode.com

dektro.com

dekort.be

dotker.com

tdekor.ru

dekort.org

dortek.dk

odtrek.com

drtoke.com

rodtek.com

drotek.com

drotek.cn

dortek.com

kredot.de

koerdt.eu

dkorte.com

dekort.eu

detkor.ru

dorket.co.uk

drketo.com

rokted.com

dekort.me

tordek.nl

dortek.co.uk

dekort.se

ketodr.com

dortek.com.tr

dekort.ru

detrok.com

dektro.de

tordek.com

tekdro.com

dortek.se

dotrek.com

kodetr.com

koerdt.de

tekord.com

tdekor.com

dekort.ca

dekort.pl

DNS History

13 records (7 active, 6 former)

●NSderek.ns.cloudflare.com2026-05-18 → 2026-07-15 · 3 obs

○ 2018-08-18 18:33:02
● 2026-05-18 16:22:10
● 2026-07-15 09:57:26

●NSjune.ns.cloudflare.com2026-05-18 → 2026-07-15 · 3 obs

○ 2018-08-18 18:33:02
● 2026-05-18 16:22:10
● 2026-07-15 09:57:26

○NSns1.dvbmedia.nl2015-06-17 → 2018-08-18 · 4 obs

● 2015-06-17 13:25:02
● 2018-08-18 18:33:02
○ 2026-05-18 16:22:10
○ 2026-07-15 09:57:26

○NSns2.dvbmedia.nl2015-06-17 → 2018-08-18 · 4 obs

● 2015-06-17 13:25:02
● 2018-08-18 18:33:02
○ 2026-05-18 16:22:10
○ 2026-07-15 09:57:26

●MXmail.dokter.nu2015-06-17 → 2026-07-15 · 2 obs

● 2015-06-17 13:25:02
● 2026-07-15 09:57:26

●A104.21.14.1412026-05-18 → 2026-07-15 · 3 obs

○ 2018-08-18 18:33:02
● 2026-05-18 16:22:10
● 2026-07-15 09:57:26

●A172.67.159.1712026-05-18 → 2026-07-15 · 3 obs

○ 2018-08-18 18:33:02
● 2026-05-18 16:22:10
● 2026-07-15 09:57:26

○A2606:4700:3031::ac43:9fab2026-05-18 → 2026-06-15 · 5 obs

○ 2018-08-18 18:33:02
● 2026-05-18 16:22:10
● 2026-06-15 11:49:02
○ 2026-06-29 12:24:34
○ 2026-07-15 09:57:26

○A2606:4700:3033::6815:e8d2026-05-18 → 2026-06-15 · 5 obs

○ 2018-08-18 18:33:02
● 2026-05-18 16:22:10
● 2026-06-15 11:49:02
○ 2026-06-29 12:24:34
○ 2026-07-15 09:57:26

●A2606:4700:3033::ac43:9fab2026-06-29 → 2026-07-15 · 3 obs

○ 2026-06-15 11:49:02
● 2026-06-29 12:24:34
● 2026-07-15 09:57:26

●A2606:4700:3036::6815:e8d2026-06-29 → 2026-07-15 · 3 obs

○ 2026-06-15 11:49:02
● 2026-06-29 12:24:34
● 2026-07-15 09:57:26

○A94.75.235.1292015-06-17 → 2016-01-24 · 4 obs

● 2015-06-17 13:25:02
● 2016-01-24 09:14:24
○ 2016-04-25 03:17:38
○ 2026-07-15 09:57:26

○A94.75.235.1302016-04-25 → 2018-08-18 · 5 obs

○ 2016-01-24 09:14:24
● 2016-04-25 03:17:38
● 2018-08-18 18:33:02
○ 2026-05-18 16:22:10
○ 2026-07-15 09:57:26

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
nu	m.ns.nu, z.ns.nu, c.ns.nu, d.ns.nu...	12 records
dokter.nu	derek.ns.cloudflare.com, june.ns.cloudflare.com	-

✅ Authoritative Response

Server:173.245.58.176

NS records: derek.ns.cloudflare.com, june.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for dokter.nu (unsigned zone)

⏱️ Timing

Total: 866ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.14.141, 172.67.159.171`
AAAA	2	`2606:4700:3036::6815:e8d, 2606:4700:3033::ac43:9fab`
NS	2	`derek.ns.cloudflare.com, june.ns.cloudflare.com`
MX	1	`mail.dokter.nu (pri: 10)`
TXT	2	`google-site-verification=_fVYIRrlDMZ3zMS, v=spf1 a mx include:_spf.google.com incl`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`derek.ns.cloudflare.com dns.cloudflare.c`

📌 Glue Records Collected

Total: 12

In-bailiwick: 12 (m.ns.nu, m.ns.nu, z.ns.nu...)

Analysis

IP Addresses

dokter.nu points to the four IP addresses 104.21.14.141, 172.67.159.171, 2606:4700:3033::ac43:9fab and 2606:4700:3036::6815:e8d.

Additional host names — agudah.bitbean.com, breatheproject.org, domaininternational.in and two others — share IP numbers with dokter.nu.

Name Servers

The NS records for dokter.nu delegate to derek.ns.cloudflare.com and june.ns.cloudflare.com.

dokter.nu shares its name server setup with other domains, including xmaquina-vote.live, 123massagetherapie.nl, yaav.nl and two others.

At least some of dokter.nu's name servers are shared with other domains, for example 5080833.com, zfjlles.xyz, mltseniorcenter.net and two more.

These name servers tend to be deployed in combination with the name servers dom.ns.cloudflare.com and graham.ns.cloudflare.com.

Host names with 6 IP numbers:

derek.ns.cloudflare.com maps to 108.162.193.154, 172.64.33.154, 173.245.59.154 and 3 additional IP addresses.

june.ns.cloudflare.com maps to 108.162.192.176, 172.64.32.176, 173.245.58.176 and 3 additional IP addresses.

Mail Servers

dokter.nu has one mail server: mail.dokter.nu.

dokter.nu - robtex.com

dokter.nu

nu

Same first word

Similar names

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

📌 Glue Records Collected

Analysis

IP Addresses

Name Servers

Mail Servers

`dokter.nu`

`nu`