`021sem.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3036::ac43:8380^{🇺🇸 Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3037::6815:a8e^{🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.10.142^{Cloudflare104.21.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.131.128^{🇺🇸 Cloudflare172.67.128.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`adaline.ns.cloudflare.com` ⭐
		A	2606:4700:50::a29f:2631^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`adaline.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c231^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`adaline.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2231^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`adaline.ns.cloudflare.com`
		A	108.162.194.49^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`adaline.ns.cloudflare.com`
		A	162.159.38.49^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`adaline.ns.cloudflare.com`
		A	172.64.34.49^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`adaline.ns.cloudflare.com`
NS	`sean.ns.cloudflare.com`
		A	2606:4700:58::adf5:3be7^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`sean.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c1e7^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`sean.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:21e7^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`sean.ns.cloudflare.com`
		A	108.162.193.231^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`sean.ns.cloudflare.com`
		A	172.64.33.231^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`sean.ns.cloudflare.com`
		A	173.245.59.231^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`sean.ns.cloudflare.com`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.10.142, 172.67.131.128
		IPv6 hints	2606:4700:3036::ac43:8380, 2606:4700:3037::6815:a8e
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=139, name=cloudflare-ech.com
SOA	`adaline.ns.cloudflare.com`dns@cloudflare.com serial=2401205862

`com`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.gtld-servers.net` ⭐
	NS	`b.gtld-servers.net`
	NS	`c.gtld-servers.net`
	NS	`d.gtld-servers.net`
	NS	`e.gtld-servers.net`
	NS	`f.gtld-servers.net`
	NS	`g.gtld-servers.net`
	NS	`h.gtld-servers.net`
	NS	`i.gtld-servers.net`
	NS	`j.gtld-servers.net`
	NS	`k.gtld-servers.net`
	NS	`l.gtld-servers.net`
	NS	`m.gtld-servers.net`
	SOA	`a.gtld-servers.net`nstld@verisign-grs.com serial=1778395406

Same first word

021sem.net

021sem.com

Similar names

sem120.com

sem120.com.cn

021sme.com

120sem.com.cn

sme120.com

DNS History

17 records (6 active, 11 former)

●NSadaline.ns.cloudflare.com2026-04-10 → 2026-05-10 · 3 obs

○ 2017-03-24 19:08:52
● 2026-04-10 07:03:56
● 2026-05-10 07:00:12

○NSns1.22.cn2015-08-05 → 2017-03-24 · 4 obs

● 2015-08-05 23:31:20
● 2017-03-24 19:08:52
○ 2026-04-10 07:03:56
○ 2026-05-10 07:00:12

○NSns2.22.cn2015-08-05 → 2015-11-24 · 4 obs

● 2015-08-05 23:31:20
● 2015-11-24 05:03:36
○ 2017-03-24 19:08:52
○ 2026-05-10 07:00:12

○NSns3.22.cn2015-08-05 → 2015-11-24 · 4 obs

● 2015-08-05 23:31:20
● 2015-11-24 05:03:36
○ 2017-03-24 19:08:52
○ 2026-05-10 07:00:12

○NSns4.22.cn2015-08-05 → 2015-11-24 · 4 obs

● 2015-08-05 23:31:20
● 2015-11-24 05:03:36
○ 2017-03-24 19:08:52
○ 2026-05-10 07:00:12

●NSsean.ns.cloudflare.com2026-04-10 → 2026-05-10 · 3 obs

○ 2017-03-24 19:08:52
● 2026-04-10 07:03:56
● 2026-05-10 07:00:12

○A103.13.73.872017-03-24 → 2017-03-24 · 4 obs

○ 2015-11-24 05:03:36
● 2017-03-24 19:08:52
○ 2026-04-10 07:03:56
○ 2026-05-10 07:00:12

●A104.21.10.1422026-04-10 → 2026-05-10 · 3 obs

○ 2017-03-24 19:08:52
● 2026-04-10 07:03:56
● 2026-05-10 07:00:12

○A148.163.187.2442015-08-05 → 2015-08-05 · 3 obs

● 2015-08-05 23:31:20
○ 2026-04-10 07:03:56
○ 2026-05-10 07:00:12

○A162.251.94.1012017-03-24 → 2017-03-24 · 4 obs

○ 2015-11-24 05:03:36
● 2017-03-24 19:08:52
○ 2026-04-10 07:03:56
○ 2026-05-10 07:00:12

○A162.251.94.252017-03-24 → 2017-03-24 · 4 obs

○ 2015-11-24 05:03:36
● 2017-03-24 19:08:52
○ 2026-04-10 07:03:56
○ 2026-05-10 07:00:12

●A172.67.131.1282026-04-10 → 2026-05-10 · 3 obs

○ 2017-03-24 19:08:52
● 2026-04-10 07:03:56
● 2026-05-10 07:00:12

●A2606:4700:3036::ac43:83802026-04-10 → 2026-05-10 · 3 obs

○ 2017-03-24 19:08:52
● 2026-04-10 07:03:56
● 2026-05-10 07:00:12

●A2606:4700:3037::6815:a8e2026-04-10 → 2026-05-10 · 3 obs

○ 2017-03-24 19:08:52
● 2026-04-10 07:03:56
● 2026-05-10 07:00:12

○A64.62.171.1352015-11-24 → 2015-11-24 · 4 obs

○ 2015-08-05 23:31:20
● 2015-11-24 05:03:36
○ 2017-03-24 19:08:52
○ 2026-05-10 07:00:12

○CNAME22url.lncdn.com2017-03-24 → 2017-03-24 · 4 obs

○ 2015-08-05 23:31:20
● 2017-03-24 19:08:52
○ 2026-04-10 07:03:56
○ 2026-05-10 07:00:12

○CNAMEfw1.22.cn2015-08-05 → 2017-03-24 · 4 obs

● 2015-08-05 23:31:20
● 2017-03-24 19:08:52
○ 2026-04-10 07:03:56
○ 2026-05-10 07:00:12

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	f.gtld-servers.net, k.gtld-servers.net, a.gtld-servers.net, e.gtld-servers.net...	-
021sem.com	sean.ns.cloudflare.com, adaline.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:173.245.59.231

NS records: sean.ns.cloudflare.com, adaline.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for 021sem.com (unsigned zone)

⏱️ Timing

Total: 207ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.131.128, 104.21.10.142`
AAAA	2	`2606:4700:3036::ac43:8380, 2606:4700:3037::6815:a8e`
NS	2	`adaline.ns.cloudflare.com, sean.ns.cloudflare.com`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`adaline.ns.cloudflare.com dns.cloudflare`

📌 Glue Records Collected

Total: 12

Out-of-bailiwick: 12 (sean.ns.cloudflare.com, sean.ns.cloudflare.com, sean.ns.cloudflare.com...)

Analysis

IP Addresses

021sem.com refers to four IP numbers: 2606:4700:3036::ac43:8380, 2606:4700:3037::6815:a8e, 104.21.10.142 and 172.67.131.128.

Other host names, for instance xmyezmo.com, danongsd.com, friluftsbua.no, vookart.com and gufte.gen.tr share IP numbers with 021sem.com.

Name Servers

021sem.com's delegation uses two name servers: adaline.ns.cloudflare.com and sean.ns.cloudflare.com.

021sem.com uses the same name server setup as other domains, such as hnxlm.com, jshtz.com, sctxmy.com, bozongsy.com and taoqitu.com.

021sem.com at least partially shares name servers with other domains, including lagloutonnerie.com, morentavisol.com, pondfulstack.digital, 86544.xyz and eroclub.gr.

These name servers are commonly used with luciana.ns.cloudflare.com, greg.ns.cloudflare.com and logan.ns.cloudflare.com.

Host names with six IP numbers:

adaline.ns.cloudflare.com points to 2606:4700:50::a29f:2631, 2803:f800:50::6ca2:c231, 2a06:98c1:50::ac40:2231, 108.162.194.49, 162.159.38.49 and 172.64.34.49.

sean.ns.cloudflare.com points to 2606:4700:58::adf5:3be7, 2803:f800:50::6ca2:c1e7, 2a06:98c1:50::ac40:21e7, 108.162.193.231, 172.64.33.231 and 173.245.59.231.

021sem.com - robtex.com

021sem.com

com

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

`021sem.com`

`com`