`opsterk.nl`

DNSSEC	⚠️ Not signed
A	2606:4700:3030::6815:210b^{🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3031::ac43:8ba1^{🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.33.11^{Cloudflare104.21.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.139.161^{🇺🇸 Cloudflare172.67.128.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`bristol.ns.cloudflare.com` ⭐
		A	2606:4700:50::a29f:262f^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`bristol.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c22f^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`bristol.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:222f^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`bristol.ns.cloudflare.com`
		A	108.162.194.47^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`bristol.ns.cloudflare.com`
		A	162.159.38.47^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`bristol.ns.cloudflare.com`
		A	172.64.34.47^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`bristol.ns.cloudflare.com`
NS	`hugh.ns.cloudflare.com`
		A	2606:4700:58::adf5:3b75^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`hugh.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c175^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`hugh.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2175^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`hugh.ns.cloudflare.com`
		A	108.162.193.117^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`hugh.ns.cloudflare.com`
		A	172.64.33.117^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`hugh.ns.cloudflare.com`
		A	173.245.59.117^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`hugh.ns.cloudflare.com`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.33.11, 172.67.139.161
		IPv6 hints	2606:4700:3030::6815:210b, 2606:4700:3031::ac43:8ba1
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=226, name=cloudflare-ech.com
SOA	`bristol.ns.cloudflare.com`dns@cloudflare.com serial=2408456314

`nl`

	DNSSEC	🔒 Signed (DS record present)
	NS	`ns1.dns.nl` ⭐
	NS	`ns3.dns.nl`
	NS	`ns4.dns.nl`
	TXT	`nl zone update: 2026-07-14 10:00:01 +0000 (EPOCH 1784023201)`
	SOA	`ns1.dns.nl`dns@sidn.nl 2026-07-14 #20

Same first word

opsterk.nl

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tekspro.ru

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prosekt.nl

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DNS History

18 records (6 active, 12 former)

●NSbristol.ns.cloudflare.com2026-06-22 → 2026-07-14 · 3 obs

○ 2017-02-15 17:33:32
● 2026-06-22 20:15:08
● 2026-07-14 10:50:58

●NShugh.ns.cloudflare.com2026-06-22 → 2026-07-14 · 3 obs

○ 2017-02-15 17:33:32
● 2026-06-22 20:15:08
● 2026-07-14 10:50:58

○NSns0.transip.net2015-07-20 → 2017-02-15 · 4 obs

● 2015-07-20 00:56:20
● 2017-02-15 17:33:32
○ 2026-06-22 20:15:08
○ 2026-07-14 10:50:58

○NSns1.transip.net2015-07-20 → 2017-02-15 · 4 obs

● 2015-07-20 00:56:20
● 2017-02-15 17:33:32
○ 2026-06-22 20:15:08
○ 2026-07-14 10:50:58

○NSns2.transip.net2015-07-20 → 2017-02-15 · 4 obs

● 2015-07-20 00:56:20
● 2017-02-15 17:33:32
○ 2026-06-22 20:15:08
○ 2026-07-14 10:50:58

○MXetrn.is.nl2015-07-20 → 2017-02-15 · 4 obs

● 2015-07-20 00:56:20
● 2017-02-15 17:33:32
○ 2026-06-22 20:15:08
○ 2026-07-14 10:50:58

○MXmail.werkonline.nu2015-07-20 → 2017-02-15 · 4 obs

● 2015-07-20 00:56:20
● 2017-02-15 17:33:32
○ 2026-06-22 20:15:08
○ 2026-07-14 10:50:58

●A104.21.33.112026-07-05 → 2026-07-14 · 4 obs

○ 2026-06-22 20:15:08
● 2026-07-05 07:42:12
○ 2026-07-08 14:14:16
● 2026-07-14 10:50:58

●A172.67.139.1612026-07-05 → 2026-07-14 · 4 obs

○ 2026-06-22 20:15:08
● 2026-07-05 07:42:12
○ 2026-07-08 14:14:16
● 2026-07-14 10:50:58

○A188.114.96.02026-06-22 → 2026-07-08 · 5 obs

○ 2017-02-15 17:33:32
● 2026-06-22 20:15:08
○ 2026-07-05 07:42:12
● 2026-07-08 14:14:16
○ 2026-07-14 10:50:58

○A188.114.97.02026-06-22 → 2026-07-08 · 5 obs

○ 2017-02-15 17:33:32
● 2026-06-22 20:15:08
○ 2026-07-05 07:42:12
● 2026-07-08 14:14:16
○ 2026-07-14 10:50:58

○A212.204.199.1032015-07-20 → 2017-02-15 · 4 obs

● 2015-07-20 00:56:20
● 2017-02-15 17:33:32
○ 2026-06-22 20:15:08
○ 2026-07-14 10:50:58

●A2606:4700:3030::6815:210b2026-07-05 → 2026-07-14 · 4 obs

○ 2026-06-22 20:15:08
● 2026-07-05 07:42:12
○ 2026-07-08 14:14:16
● 2026-07-14 10:50:58

●A2606:4700:3031::ac43:8ba12026-07-05 → 2026-07-14 · 4 obs

○ 2026-06-22 20:15:08
● 2026-07-05 07:42:12
○ 2026-07-08 14:14:16
● 2026-07-14 10:50:58

○A2a06:98c1:3120::2026-07-08 → 2026-07-08 · 3 obs

○ 2026-07-05 07:42:12
● 2026-07-08 14:14:16
○ 2026-07-14 10:50:58

○A2a06:98c1:3120::42026-06-22 → 2026-06-22 · 4 obs

○ 2017-02-15 17:33:32
● 2026-06-22 20:15:08
○ 2026-07-05 07:42:12
○ 2026-07-14 10:50:58

○A2a06:98c1:3121::2026-07-08 → 2026-07-08 · 3 obs

○ 2026-07-05 07:42:12
● 2026-07-08 14:14:16
○ 2026-07-14 10:50:58

○A2a06:98c1:3121::42026-06-22 → 2026-06-22 · 4 obs

○ 2017-02-15 17:33:32
● 2026-06-22 20:15:08
○ 2026-07-05 07:42:12
○ 2026-07-14 10:50:58

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
nl	ns1.dns.nl, ns3.dns.nl, ns4.dns.nl	-
opsterk.nl	bristol.ns.cloudflare.com, hugh.ns.cloudflare.com	-

✅ Authoritative Response

Server:108.162.194.47

NS records: bristol.ns.cloudflare.com, hugh.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for opsterk.nl (unsigned zone)

⏱️ Timing

Total: 224ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.139.161, 104.21.33.11`
AAAA	2	`2606:4700:3030::6815:210b, 2606:4700:3031::ac43:8ba1`
NS	2	`bristol.ns.cloudflare.com, hugh.ns.cloudflare.com`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`bristol.ns.cloudflare.com dns.cloudflare`

Analysis

IP Addresses

opsterk.nl resolves to four IP addresses: 104.21.33.11, 172.67.139.161, 2606:4700:3030::6815:210b and 2606:4700:3031::ac43:8ba1.

pancc.cn, sn008.sinaga79.online, firstlineelectronics.co.uk plus two other host names have IP numbers in common with opsterk.nl.

Name Servers

Two name servers handle the delegation for opsterk.nl: bristol.ns.cloudflare.com and hugh.ns.cloudflare.com.

The name server configuration of opsterk.nl is shared with other domains, for instance kodrama.me, zpravy.live, luck8ok.com and two others.

opsterk.nl partially shares its NS delegation with several other domains, including cerokilometro.com, piraeusporthotel.com, scrmi.com and two others.

These name servers often co-occur with the name servers logan.ns.cloudflare.com.

Hosts with 6 IP addresses each:

bristol.ns.cloudflare.com resolves to 108.162.194.47, 162.159.38.47 and 172.64.34.47 among others, with 3 other IP addresses in total.

hugh.ns.cloudflare.com resolves to 108.162.193.117, 172.64.33.117 and 173.245.59.117 among others, with 3 other IP addresses in total.

opsterk.nl - robtex.com

opsterk.nl

nl

Same first word

Similar names

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

Analysis

IP Addresses

Name Servers

`opsterk.nl`

`nl`