`3721app.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3033::ac43:9623^{🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3036::6815:51fc^{🇺🇸 Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.81.252^{Cloudflare104.21.80.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.150.35^{🇺🇸 Cloudflare172.67.144.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`pola.ns.cloudflare.com` ⭐
		A	2606:4700:50::adf5:3ad6^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`pola.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c0d6^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`pola.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:20d6^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`pola.ns.cloudflare.com`
		A	108.162.192.214^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`pola.ns.cloudflare.com`
		A	172.64.32.214^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`pola.ns.cloudflare.com`
		A	173.245.58.214^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`pola.ns.cloudflare.com`
NS	`razvan.ns.cloudflare.com`
		A	2606:4700:58::a29f:2c4d^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`razvan.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c34d^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`razvan.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:234d^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`razvan.ns.cloudflare.com`
		A	108.162.195.77^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`razvan.ns.cloudflare.com`
		A	162.159.44.77^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`razvan.ns.cloudflare.com`
		A	172.64.35.77^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`razvan.ns.cloudflare.com`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.81.252, 172.67.150.35
		IPv6 hints	2606:4700:3033::ac43:9623, 2606:4700:3036::6815:51fc
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=175, name=cloudflare-ech.com
SOA	`pola.ns.cloudflare.com`dns@cloudflare.com serial=2400689306

`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=1777476921

Same first word

3721app.com

Similar names

app7123.com

DNS History

16 records (6 active, 10 former)

○NSali.ns.cloudflare.com2016-07-17 → 2017-04-02 · 5 obs

○ 2016-03-16 22:44:48
● 2016-07-17 13:31:48
● 2017-04-02 12:42:38
○ 2026-04-05 03:32:52
○ 2026-04-29 15:56:26

○NSdns10.hichina.com2015-08-01 → 2016-03-16 · 4 obs

● 2015-08-01 05:23:16
● 2016-03-16 22:44:48
○ 2016-07-17 13:31:48
○ 2026-04-29 15:56:26

○NSdns9.hichina.com2015-08-01 → 2016-03-16 · 4 obs

● 2015-08-01 05:23:16
● 2016-03-16 22:44:48
○ 2016-07-17 13:31:48
○ 2026-04-29 15:56:26

○NSjay.ns.cloudflare.com2016-07-17 → 2017-04-02 · 5 obs

○ 2016-03-16 22:44:48
● 2016-07-17 13:31:48
● 2017-04-02 12:42:38
○ 2026-04-05 03:32:52
○ 2026-04-29 15:56:26

●NSpola.ns.cloudflare.com2026-04-05 → 2026-04-29 · 3 obs

○ 2017-04-02 12:42:38
● 2026-04-05 03:32:52
● 2026-04-29 15:56:26

●NSrazvan.ns.cloudflare.com2026-04-05 → 2026-04-29 · 3 obs

○ 2017-04-02 12:42:38
● 2026-04-05 03:32:52
● 2026-04-29 15:56:26

●A104.21.81.2522026-04-05 → 2026-04-29 · 3 obs

○ 2020-03-11 21:15:58
● 2026-04-05 03:32:52
● 2026-04-29 15:56:26

○A104.27.132.132016-07-17 → 2017-04-02 · 5 obs

○ 2016-03-16 22:44:48
● 2016-07-17 13:31:48
● 2017-04-02 12:42:38
○ 2020-03-11 21:15:58
○ 2026-04-29 15:56:26

○A104.27.133.132016-07-17 → 2017-04-02 · 5 obs

○ 2016-03-16 22:44:48
● 2016-07-17 13:31:48
● 2017-04-02 12:42:38
○ 2020-03-11 21:15:58
○ 2026-04-29 15:56:26

○A119.28.187.2152020-03-11 → 2020-03-11 · 4 obs

○ 2017-04-02 12:42:38
● 2020-03-11 21:15:58
○ 2026-04-05 03:32:52
○ 2026-04-29 15:56:26

○A121.42.84.712015-08-01 → 2016-03-16 · 4 obs

● 2015-08-01 05:23:16
● 2016-03-16 22:44:48
○ 2016-07-17 13:31:48
○ 2026-04-29 15:56:26

●A172.67.150.352026-04-05 → 2026-04-29 · 3 obs

○ 2020-03-11 21:15:58
● 2026-04-05 03:32:52
● 2026-04-29 15:56:26

○A2400:cb00:2048:1::681b:840d2017-04-02 → 2017-04-02 · 4 obs

○ 2016-07-17 13:31:48
● 2017-04-02 12:42:38
○ 2026-04-05 03:32:52
○ 2026-04-29 15:56:26

○A2400:cb00:2048:1::681b:850d2017-04-02 → 2017-04-02 · 4 obs

○ 2016-07-17 13:31:48
● 2017-04-02 12:42:38
○ 2026-04-05 03:32:52
○ 2026-04-29 15:56:26

●A2606:4700:3033::ac43:96232026-04-05 → 2026-04-29 · 3 obs

○ 2020-03-11 21:15:58
● 2026-04-05 03:32:52
● 2026-04-29 15:56:26

●A2606:4700:3036::6815:51fc2026-04-05 → 2026-04-29 · 3 obs

○ 2020-03-11 21:15:58
● 2026-04-05 03:32:52
● 2026-04-29 15:56:26

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	l.gtld-servers.net, j.gtld-servers.net, h.gtld-servers.net, d.gtld-servers.net...	-
3721app.com	pola.ns.cloudflare.com, razvan.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.192.214

NS records: pola.ns.cloudflare.com, razvan.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for 3721app.com (unsigned zone)

⏱️ Timing

Total: 134ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.81.252, 172.67.150.35`
AAAA	2	`2606:4700:3033::ac43:9623, 2606:4700:3036::6815:51fc`
NS	2	`pola.ns.cloudflare.com, razvan.ns.cloudflare.com`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`pola.ns.cloudflare.com dns.cloudflare.co`

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

3721app.com resolves to four IP numbers: 2606:4700:3033::ac43:9623, 2606:4700:3036::6815:51fc, 104.21.81.252 and 172.67.150.35.

Other host names such as honeyfear.xyz, accaprin.com, keralixvione.com, www.salsache.uk and neadroudru.ru.com share IPs with 3721app.com.

Name Servers

3721app.com is delegated to two name servers: pola.ns.cloudflare.com and razvan.ns.cloudflare.com.

3721app.com shares the same name server setup as jsmetc.com, huamus.com, urcae.com, dshcyl.com and 88haofang.com.

3721app.com at least partially shares name servers with other domains, for instance 674756.cc, clothworks.com, djelena.com, byethen.com and red-financiera.com.

these name servers are often used in conjunction with the name servers adi.ns.cloudflare.com.

Host names with six IP numbers:

pola.ns.cloudflare.com points to 2606:4700:50::adf5:3ad6, 2803:f800:50::6ca2:c0d6, 2a06:98c1:50::ac40:20d6, 108.162.192.214, 172.64.32.214 and 173.245.58.214.

razvan.ns.cloudflare.com points to 2606:4700:58::a29f:2c4d, 2803:f800:50::6ca2:c34d, 2a06:98c1:50::ac40:234d, 108.162.195.77, 162.159.44.77 and 172.64.35.77.

3721app.com - robtex.com

3721app.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

`3721app.com`

`com`