`simulationworks.org`

DNSSEC	⚠️ Not signed
A	2606:4700:3031::6815:4cc4^{🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3033::ac43:c7ef^{🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.76.196^{Cloudflare104.21.64.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.199.239^{🇺🇸 Cloudflare172.67.192.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`clint.ns.cloudflare.com` ⭐
		A	2606:4700:58::adf5:3b5a^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`clint.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c15a^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`clint.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:215a^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`clint.ns.cloudflare.com`
		A	108.162.193.90^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`clint.ns.cloudflare.com`
		A	172.64.33.90^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`clint.ns.cloudflare.com`
		A	173.245.59.90^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`clint.ns.cloudflare.com`
NS	`harmony.ns.cloudflare.com`
		A	2606:4700:50::a29f:2692^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`harmony.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c292^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`harmony.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2292^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`harmony.ns.cloudflare.com`
		A	108.162.194.146^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`harmony.ns.cloudflare.com`
		A	162.159.38.146^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`harmony.ns.cloudflare.com`
		A	172.64.34.146^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`harmony.ns.cloudflare.com`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4	104.21.76.196, 172.67.199.239
		IPv6	2606:4700:3031::6815:4cc4, 2606:4700:3033::ac43:c7ef
SOA	`clint.ns.cloudflare.com`dns@cloudflare.com serial=2399911301

`org`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a0.org.afilias-nst.info` ⭐ ⚠️ Not in parent delegation
	NS	`a2.org.afilias-nst.info` ⚠️ Not in parent delegation
	NS	`b0.org.afilias-nst.org`
	NS	`b2.org.afilias-nst.org`
	NS	`c0.org.afilias-nst.info` ⚠️ Not in parent delegation
	NS	`d0.org.afilias-nst.org`
	SOA	`a0.org.afilias-nst.info`hostmaster@donuts.email serial=1774459805

Same first word

simulationworks.org

DNS History

10 records (6 active, 4 former)

●NSclint.ns.cloudflare.com2026-02-27 → 2026-03-25 · 2 obs

● 2026-02-27 07:05:38
● 2026-03-25 18:08:28

●NSharmony.ns.cloudflare.com2026-02-27 → 2026-03-25 · 2 obs

● 2026-02-27 07:05:38
● 2026-03-25 18:08:28

●A104.21.76.1962026-02-27 → 2026-03-25 · 4 obs

● 2026-02-27 07:05:38
● 2026-02-27 18:13:16
○ 2026-03-05 15:43:40
● 2026-03-25 18:08:28

●A172.67.199.2392026-02-27 → 2026-03-25 · 4 obs

● 2026-02-27 07:05:38
● 2026-02-27 18:13:16
○ 2026-03-05 15:43:40
● 2026-03-25 18:08:28

○A188.114.96.02026-03-05 → 2026-03-05 · 3 obs

○ 2026-02-27 18:13:16
● 2026-03-05 15:43:40
○ 2026-03-25 18:08:28

○A188.114.97.02026-03-05 → 2026-03-05 · 3 obs

○ 2026-02-27 18:13:16
● 2026-03-05 15:43:40
○ 2026-03-25 18:08:28

●A2606:4700:3031::6815:4cc42026-02-27 → 2026-03-25 · 4 obs

● 2026-02-27 07:05:38
● 2026-02-27 18:13:16
○ 2026-03-05 15:43:40
● 2026-03-25 18:08:28

●A2606:4700:3033::ac43:c7ef2026-02-27 → 2026-03-25 · 4 obs

● 2026-02-27 07:05:38
● 2026-02-27 18:13:16
○ 2026-03-05 15:43:40
● 2026-03-25 18:08:28

○A2a06:98c1:3120::2026-03-05 → 2026-03-05 · 3 obs

○ 2026-02-27 18:13:16
● 2026-03-05 15:43:40
○ 2026-03-25 18:08:28

○A2a06:98c1:3121::2026-03-05 → 2026-03-05 · 3 obs

○ 2026-02-27 18:13:16
● 2026-03-05 15:43:40
○ 2026-03-25 18:08:28

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
org	b0.org.afilias-nst.org, b2.org.afilias-nst.org, d0.org.afilias-nst.org	-
simulationworks.org	clint.ns.cloudflare.com, harmony.ns.cloudflare.com	-

✅ Authoritative Response

Server:172.64.33.90

NS records: clint.ns.cloudflare.com, harmony.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for simulationworks.org (unsigned zone)

⏱️ Timing

Total: 2844ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.76.196, 172.67.199.239`
AAAA	2	`2606:4700:3033::ac43:c7ef, 2606:4700:3031::6815:4cc4`
NS	2	`clint.ns.cloudflare.com, harmony.ns.cloudflare.com`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`clint.ns.cloudflare.com dns.cloudflare.c`

Analysis

IP Addresses

simulationworks.org maps to four IP numbers: 2606:4700:3031::6815:4cc4, 2606:4700:3033::ac43:c7ef, 104.21.76.196 and 172.67.199.239.

Other host names, for instance liking.my10api.com, tmcpools.com, oikosweb.com, ca100.org and arkintime.com share IP numbers with simulationworks.org.

Name Servers

Two name servers clint.ns.cloudflare.com and harmony.ns.cloudflare.com handle delegation for simulationworks.org.

simulationworks.org uses the same name server setup as other domains, for example chileglobal.org, goldmodel.net, scitechdevelopment.com, justiceformegrahi.com and projecalide.com.

simulationworks.org partially shares name servers with other domains; examples include cardassilaris.com, gamesunblocked.org, dlpersonaltrainer.com, mkuaixun17.cn and fujiiryoki.fr.

These name servers are often used with the name servers wally.ns.cloudflare.com and vick.ns.cloudflare.com.

Host names with six IP numbers: clint.ns.cloudflare.com points to: 2606:4700:58::adf5:3b5a, 2803:f800:50::6ca2:c15a, 2a06:98c1:50::ac40:215a, 108.162.193.90, 172.64.33.90 and 173.245.59.90; harmony.ns.cloudflare.com points to: 2606:4700:50::a29f:2692, 2803:f800:50::6ca2:c292, 2a06:98c1:50::ac40:2292, 108.162.194.146, 162.159.38.146 and 172.64.34.146.

simulationworks.org - robtex.com