721youhui.com - robtex.com

721youhui.com

DNSSEC⚠️ Not signed
A2606:4700:3032::ac43:89fd🇺🇸 Cloudflare2606:4700:3032::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3037::6815:38ec🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.56.236Cloudflare104.21.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.137.253🇺🇸 Cloudflare172.67.128.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSharlee.ns.cloudflare.com ⭐
A2606:4700:50::a29f:26ee🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRharlee.ns.cloudflare.com
A2803:f800:50::6ca2:c2ee🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRharlee.ns.cloudflare.com
A2a06:98c1:50::ac40:22ee🇺🇸 Cloudflare2a06:98c1:50::/45
PTRharlee.ns.cloudflare.com
A108.162.194.238🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRharlee.ns.cloudflare.com
A162.159.38.238Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRharlee.ns.cloudflare.com
A172.64.34.238🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRharlee.ns.cloudflare.com
NSterin.ns.cloudflare.com
A2606:4700:58::adf5:3bec🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRterin.ns.cloudflare.com
A2803:f800:50::6ca2:c1ec🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRterin.ns.cloudflare.com
A2a06:98c1:50::ac40:21ec🇺🇸 Cloudflare2a06:98c1:50::/45
PTRterin.ns.cloudflare.com
A108.162.193.236🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRterin.ns.cloudflare.com
A172.64.33.236🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRterin.ns.cloudflare.com
A173.245.59.236🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRterin.ns.cloudflare.com
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.56.236, 172.67.137.253
IPv6 hints2606:4700:3032::ac43:89fd, 2606:4700:3037::6815:38ec
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=6, name=cloudflare-ech.com
SOAharlee.ns.cloudflare.comdns@cloudflare.com serial=2398976769

com

DNSSEC🔒 Signed (DS record present)
NSa.gtld-servers.net ⭐
NSb.gtld-servers.net
NSc.gtld-servers.net
NSd.gtld-servers.net
NSe.gtld-servers.net
NSf.gtld-servers.net
NSg.gtld-servers.net
NSh.gtld-servers.net
NSi.gtld-servers.net
NSj.gtld-servers.net
NSk.gtld-servers.net
NSl.gtld-servers.net
NSm.gtld-servers.net
SOAa.gtld-servers.netnstld@verisign-grs.com serial=1776144917

Same first word

721youhui.com

DNS History

11 records (6 active, 5 former)

2017201820192020202120222023202420252026NSharlee.ns.cloudflare.comterin.ns.cloudflare.comdns10.hichina.comdns9.hichina.comns5.dnsdun.comns5.dnsdun.netA104.21.56.236172.67.137.2532606:4700:3032::ac43:89fd2606:4700:3037::6815:38ec172.241.249.55
○NSdns10.hichina.com2016-12-15 → 2016-12-15 · 3 obs
● 2016-12-15 03:11:32
○ 2018-07-09 21:56:56
○ 2026-04-14 05:38:28
○NSdns9.hichina.com2016-12-15 → 2016-12-15 · 3 obs
● 2016-12-15 03:11:32
○ 2018-07-09 21:56:56
○ 2026-04-14 05:38:28
●NSharlee.ns.cloudflare.com2026-03-12 → 2026-04-14 · 3 obs
○ 2018-07-09 21:56:56
● 2026-03-12 09:44:22
● 2026-04-14 05:38:28
○NSns5.dnsdun.com2018-07-09 → 2018-07-09 · 4 obs
○ 2016-12-15 03:11:32
● 2018-07-09 21:56:56
○ 2026-03-12 09:44:22
○ 2026-04-14 05:38:28
○NSns5.dnsdun.net2018-07-09 → 2018-07-09 · 4 obs
○ 2016-12-15 03:11:32
● 2018-07-09 21:56:56
○ 2026-03-12 09:44:22
○ 2026-04-14 05:38:28
●NSterin.ns.cloudflare.com2026-03-12 → 2026-04-14 · 3 obs
○ 2018-07-09 21:56:56
● 2026-03-12 09:44:22
● 2026-04-14 05:38:28
●A104.21.56.2362026-03-12 → 2026-04-14 · 3 obs
○ 2018-07-09 21:56:56
● 2026-03-12 09:44:22
● 2026-04-14 05:38:28
○A172.241.249.552018-07-09 → 2018-07-09 · 3 obs
● 2018-07-09 21:56:56
○ 2026-03-12 09:44:22
○ 2026-04-14 05:38:28
●A172.67.137.2532026-03-12 → 2026-04-14 · 3 obs
○ 2018-07-09 21:56:56
● 2026-03-12 09:44:22
● 2026-04-14 05:38:28
●A2606:4700:3032::ac43:89fd2026-03-12 → 2026-04-14 · 3 obs
○ 2018-07-09 21:56:56
● 2026-03-12 09:44:22
● 2026-04-14 05:38:28
●A2606:4700:3037::6815:38ec2026-03-12 → 2026-04-14 · 3 obs
○ 2018-07-09 21:56:56
● 2026-03-12 09:44:22
● 2026-04-14 05:38:28

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
comk.gtld-servers.net, b.gtld-servers.net, h.gtld-servers.net, c.gtld-servers.net...-
721youhui.comterin.ns.cloudflare.com, harlee.ns.cloudflare.com12 records

✅ Authoritative Response

Server:108.162.193.236

NS records: terin.ns.cloudflare.com, harlee.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for 721youhui.com (unsigned zone)

⏱️ Timing

Total: 83ms | Queries: -

📄 Records

TypeCountSample Data
A2172.67.137.253, 104.21.56.236
AAAA22606:4700:3032::ac43:89fd, 2606:4700:3037::6815:38ec
NS2harlee.ns.cloudflare.com, terin.ns.cloudflare.com
HTTPS1{"priority":1,"target":".","alpn":["h3",
SOA1harlee.ns.cloudflare.com dns.cloudflare.

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

721youhui.com maps to four IP numbers: 2606:4700:3032::ac43:89fd, 2606:4700:3037::6815:38ec, 104.21.56.236 and 172.67.137.253.

Other host names such as tricolortv-info.ru, alexathurman.com, suremembers.com, t.dripemail2.com and 744vv.com share IPs with 721youhui.com.

Name Servers

Two name servers harlee.ns.cloudflare.com and terin.ns.cloudflare.com handle the delegation for 721youhui.com.

721youhui.com shares the same name server setup as other domains, for example he-feng.com, jxyytz.com, xydun.com, ktshwx.com and cq973.com.

721youhui.com at least partially shares name servers with other domains, for example telasintercap.com.br, works-agency.fr, casinoupdatereport.co.uk, aranga.watch and nissay-sva.com.cn.

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

Host names with six IP numbers:

harlee.ns.cloudflare.com points to 2606:4700:50::a29f:26ee, 2803:f800:50::6ca2:c2ee, 2a06:98c1:50::ac40:22ee, 108.162.194.238, 162.159.38.238 and 172.64.34.238.

terin.ns.cloudflare.com points to 2606:4700:58::adf5:3bec, 2803:f800:50::6ca2:c1ec, 2a06:98c1:50::ac40:21ec, 108.162.193.236, 172.64.33.236 and 173.245.59.236.