🛡️Domain Reputation CheckBlocklist, phishing & malware status→

`stdtesting.us.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3033::ac43:d4e6^{🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3034::6815:25cc^{🇺🇸 Cloudflare2606:4700:3034::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.37.204^{Cloudflare104.21.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.212.230^{🇺🇸 Cloudflare172.67.208.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`denver.ns.cloudflare.com` ⭐
		A	2606:4700:58::a29f:2cc4^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`denver.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c3c4^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`denver.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:23c4^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`denver.ns.cloudflare.com`
		A	108.162.195.196^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`denver.ns.cloudflare.com`
		A	162.159.44.196^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`denver.ns.cloudflare.com`
		A	172.64.35.196^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`denver.ns.cloudflare.com`
NS	`susan.ns.cloudflare.com`
		A	2606:4700:50::a29f:26c7^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`susan.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c2c7^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`susan.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:22c7^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`susan.ns.cloudflare.com`
		A	108.162.194.199^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`susan.ns.cloudflare.com`
		A	162.159.38.199^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`susan.ns.cloudflare.com`
		A	172.64.34.199^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`susan.ns.cloudflare.com`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.37.204, 172.67.212.230
		IPv6 hints	2606:4700:3033::ac43:d4e6, 2606:4700:3034::6815:25cc
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=99, name=cloudflare-ech.com
SOA	`denver.ns.cloudflare.com`dns@cloudflare.com serial=2413510548

`us.com`

	DNSSEC	🔒 Signed (DS record present)
	A	54.153.56.183^{🇺🇸 Amazon54.153.0.0/17 EC2 SFO prefix}
	NS	`ns0.centralnic.net` ⭐
	NS	`ns1.centralnic.net`
	NS	`ns2.centralnic.net`
	NS	`ns3.centralnic.net`
	NS	`ns4.centralnic.net`
	MX	`mx-01.emailme.com` ⭐
	TXT	`v=spf1 mx -all`
	TXT	`google-site-verification=TQ9DQVGZ4sDKfEbBIAiflq7ZKjGuCOC_vEpwyw_XsW8`
	SOA	`ns0.centralnic.net`hostmaster@centralnic.net serial=3000802908

rank #352 globally
rank #225 in the tld

us.com

us.comis a private domain registry operated by CentralNic (now Team Internet Group plc) that offers third-level registrations as an alternative to the official.usor.comextensions. Unlike the official.uscountry-code top-level domain, registrations underus.comare unrestricted and available to anyone globally.

Key facts

Owner / operator: CentralNic (Team Internet Group plc)
TLD:.com— gTLD
Primary purpose: Domain registry for third-level subdomains
Status: active

History

Year	Event
1995	The`us.com`registry is established to offer third-level domain registrations.
1996	CentralNic, the operator of the registry, is founded.
2023	CentralNic Group plc officially rebrands to Team Internet Group plc.

⚠️ On DNS blocklist: spam-tlds
WOT: SAFE (48/100)
📈 Tranco rank: #1,131

Same first word

stdtesting.ca

stdtesting.com

stdtesting.uk

stdtesting.us

stdtesting.me

stdtesting.sg

stdtesting.co.uk

stdtesting.clinic

stdtesting.dev

stdtesting.org

stdtesting.us.com

stdtesting.bio

stdtesting.net

Similar names

dtstesting.com

Previous names

Next names

DNS History

10 records (6 active, 4 former)

●NSdenver.ns.cloudflare.com2026-09-06 → 2026-09-09 · 2 obs

● 2026-09-06 07:14:12
● 2026-09-09 14:05:04

●NSsusan.ns.cloudflare.com2026-09-06 → 2026-09-09 · 2 obs

● 2026-09-06 07:14:12
● 2026-09-09 14:05:04

●A104.21.37.2042026-09-09 → 2026-09-09 · 2 obs

○ 2026-09-06 07:14:12
● 2026-09-09 14:05:04

●A172.67.212.2302026-09-09 → 2026-09-09 · 2 obs

○ 2026-09-06 07:14:12
● 2026-09-09 14:05:04

○A188.114.96.02026-09-06 → 2026-09-06 · 2 obs

● 2026-09-06 07:14:12
○ 2026-09-09 14:05:04

○A188.114.97.02026-09-06 → 2026-09-06 · 2 obs

● 2026-09-06 07:14:12
○ 2026-09-09 14:05:04

●A2606:4700:3033::ac43:d4e62026-09-09 → 2026-09-09 · 2 obs

○ 2026-09-06 07:14:12
● 2026-09-09 14:05:04

●A2606:4700:3034::6815:25cc2026-09-09 → 2026-09-09 · 2 obs

○ 2026-09-06 07:14:12
● 2026-09-09 14:05:04

○A2a06:98c1:3120::2026-09-06 → 2026-09-06 · 2 obs

● 2026-09-06 07:14:12
○ 2026-09-09 14:05:04

○A2a06:98c1:3121::2026-09-06 → 2026-09-06 · 2 obs

● 2026-09-06 07:14:12
○ 2026-09-09 14:05:04

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	e.gtld-servers.net, j.gtld-servers.net, i.gtld-servers.net, l.gtld-servers.net...	-
us.com	ns1.centralnic.net, ns2.centralnic.net, ns3.centralnic.net, ns4.centralnic.net	-
stdtesting.us.com	susan.ns.cloudflare.com, denver.ns.cloudflare.com	-

✅ Authoritative Response

Server:162.159.44.196

NS records: susan.ns.cloudflare.com, denver.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for stdtesting.us.com (unsigned zone)

⏱️ Timing

Total: 1114ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.212.230, 104.21.37.204`
AAAA	2	`2606:4700:3034::6815:25cc, 2606:4700:3033::ac43:d4e6`
NS	2	`denver.ns.cloudflare.com, susan.ns.cloudflare.com`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`denver.ns.cloudflare.com dns.cloudflare.`

Analysis

IP Addresses

stdtesting.us.com has four IP addresses: 104.21.37.204, 172.67.212.230, 2606:4700:3033::ac43:d4e6 and 2606:4700:3034::6815:25cc.

Among the host names that share IP numbers with stdtesting.us.com are el-tenor.com, collop.site, null.edudigital.com.vn and two others.

Name Servers

stdtesting.us.com is delegated to two name servers: denver.ns.cloudflare.com and susan.ns.cloudflare.com.

stdtesting.us.com has the same name server delegation as a number of other domains, such as aees.sa.com, buteftatom.gr.com, stm.sa.com and two more.

stdtesting.us.com partially shares its NS delegation with several other domains, including researchcompass.net, levelup-casino-online-au.com, didik2u.com and two others.

The name servers lily.ns.cloudflare.com, clayton.ns.cloudflare.com, leonard.ns.cloudflare.com and bonnie.ns.cloudflare.com are often found in use alongside these name servers.

Host names resolving to 6 IP numbers:

denver.ns.cloudflare.com resolves to 108.162.195.196, 162.159.44.196, 172.64.35.196 and 3 other IP addresses.

susan.ns.cloudflare.com resolves to 108.162.194.199, 162.159.38.199, 172.64.34.199 and 3 other IP addresses.

stdtesting.us.com - robtex.com