`521193.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3031::ac43:9191^{🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3034::6815:498c^{🇺🇸 Cloudflare2606:4700:3034::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.73.140^{Cloudflare104.21.64.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.145.145^{🇺🇸 Cloudflare172.67.144.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`duke.ns.cloudflare.com` ⭐
		A	2606:4700:58::adf5:3b6e^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`duke.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c16e^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`duke.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:216e^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`duke.ns.cloudflare.com`
		A	108.162.193.110^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`duke.ns.cloudflare.com`
		A	172.64.33.110^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`duke.ns.cloudflare.com`
		A	173.245.59.110^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`duke.ns.cloudflare.com`
NS	`martha.ns.cloudflare.com`
		A	2606:4700:50::a29f:268e^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`martha.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c28e^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`martha.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:228e^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`martha.ns.cloudflare.com`
		A	108.162.194.142^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`martha.ns.cloudflare.com`
		A	162.159.38.142^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`martha.ns.cloudflare.com`
		A	172.64.34.142^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`martha.ns.cloudflare.com`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.73.140, 172.67.145.145
		IPv6 hints	2606:4700:3031::ac43:9191, 2606:4700:3034::6815:498c
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=137, name=cloudflare-ech.com
SOA	`duke.ns.cloudflare.com`dns@cloudflare.com serial=2403369879

`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=1778671851

Same first word

521193.com

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DNS History

8 records (6 active, 2 former)

●NSduke.ns.cloudflare.com2026-04-25 → 2026-05-13 · 3 obs

○ 2017-09-05 22:11:48
● 2026-04-25 16:56:26
● 2026-05-13 11:31:48

●NSmartha.ns.cloudflare.com2026-04-25 → 2026-05-13 · 3 obs

○ 2017-09-05 22:11:48
● 2026-04-25 16:56:26
● 2026-05-13 11:31:48

○NSns1.alidns.com2016-12-14 → 2017-09-05 · 4 obs

● 2016-12-14 23:52:08
● 2017-09-05 22:11:48
○ 2026-04-25 16:56:26
○ 2026-05-13 11:31:48

○NSns2.alidns.com2016-12-14 → 2017-09-05 · 4 obs

● 2016-12-14 23:52:08
● 2017-09-05 22:11:48
○ 2026-04-25 16:56:26
○ 2026-05-13 11:31:48

●A104.21.73.1402026-04-25 → 2026-05-13 · 2 obs

● 2026-04-25 16:56:26
● 2026-05-13 11:31:48

●A172.67.145.1452026-04-25 → 2026-05-13 · 2 obs

● 2026-04-25 16:56:26
● 2026-05-13 11:31:48

●A2606:4700:3031::ac43:91912026-04-25 → 2026-05-13 · 2 obs

● 2026-04-25 16:56:26
● 2026-05-13 11:31:48

●A2606:4700:3034::6815:498c2026-04-25 → 2026-05-13 · 2 obs

● 2026-04-25 16:56:26
● 2026-05-13 11:31:48

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	l.gtld-servers.net, j.gtld-servers.net, h.gtld-servers.net, d.gtld-servers.net...	-
521193.com	duke.ns.cloudflare.com, martha.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.194.142

NS records: duke.ns.cloudflare.com, martha.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for 521193.com (unsigned zone)

⏱️ Timing

Total: 144ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.145.145, 104.21.73.140`
AAAA	2	`2606:4700:3031::ac43:9191, 2606:4700:3034::6815:498c`
NS	2	`duke.ns.cloudflare.com, martha.ns.cloudflare.com`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`duke.ns.cloudflare.com dns.cloudflare.co`

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

521193.com maps to four IP numbers: 2606:4700:3031::ac43:9191, 2606:4700:3034::6815:498c, 104.21.73.140 and 172.67.145.145.

Other host names such as advancegroupasia.com, meupassatempoblablabla.com, asscat.org, mx.russellvillas.com and miravonexiq.com share IPs with 521193.com.

Name Servers

Two name servers duke.ns.cloudflare.com and martha.ns.cloudflare.com handle the delegation for 521193.com.

521193.com shares the same name server setup as other domains, for example zzyaohong.com, hfczrj.com, 518taolegou.com, cl7q.com and czhknmgd.com.

521193.com at least partially shares name servers with other domains, for example piwarehouse.net, wepr.shop, smoothapps.com, photolive.icu and enxaguanteodonto.sbs.

these name servers are commonly used alongside johnathan.ns.cloudflare.com name servers.

Host names with six IP numbers:

duke.ns.cloudflare.com points to 2606:4700:58::adf5:3b6e, 2803:f800:50::6ca2:c16e, 2a06:98c1:50::ac40:216e, 108.162.193.110, 172.64.33.110 and 173.245.59.110.

martha.ns.cloudflare.com points to 2606:4700:50::a29f:268e, 2803:f800:50::6ca2:c28e, 2a06:98c1:50::ac40:228e, 108.162.194.142, 162.159.38.142 and 172.64.34.142.

521193.com - robtex.com

521193.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

`521193.com`

`com`