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Ddos4399 alternatives & similar sites

DDOS，DDOS攻击,网站攻击,APP攻击，CC压力测试,DDOS平台，DDDOS攻击-天越网络压力测试平台 — 18 websites ranked by shared content topics, category and on-page relevance.

Each result shows its full tech stack, contacts and AI-policy — not just a name · Browse all sites in Information And Network Security →

Domain	Match	Title	Country/Lang	Category	AI files	Contact	AI-protection
123cdn.com ↗	75 match 2 shared topics	123CDN.COM - 全球智能CDN加速与高防安全	zh	information-and-network-security	robotsllmsaihumans	emailphone	partial · 8
bdwbg.com ↗	60 match 2 shared topics	夏时国际下载-夏时国际官网-夏时国际免费版-夏时国际最新版-夏时国际电脑版	zh	information-and-network-security	robotsllmsaihumans	emailphone	none
haoyep.com ↗	60 match 2 shared topics	Leehow的小站 - 好耶！	zh	computer-networking	robotsllmsaihumans	emailphone	partial · 8
luckyii.com ↗	60 match 2 shared topics	广州市瑞智智能科技有限公司	zh	computer-networking	robotsllmsaihumans	emailphone	none
9safe.cn ↗	47 match 1 shared topics	净网猎手 · 网络安全守护专家	CN zh	information-and-network-security	robotsllmsaihumans	emailphone	none
ctcool.net ↗	46 match 1 shared topics	〓圣骑士--网络安全技术中心〓	zh	information-and-network-security	robotsllmsaihumans	emailphone	none
cspxn.com ↗	46 match 1 shared topics	北京易连网络技术中心	zh	computer-networking	robotsllmsaihumans	emailphone	none
v2ray.com ↗	46 match 1 shared topics	Project V · Project V 官方网站	zh	computer-networking	robotsllmsaihumans	emailphone	none
nassafe.com ↗	46 match 1 shared topics	网络信息安全提示	zh	information-and-network-security	robotsllmsaihumans	emailphone	none
ctct5.com ↗	46 match 1 shared topics	合肥市蜀山区幕琳网络信息咨询工作室	zh	information-and-network-security WordPress	robotsllmsaihumans	emailphone	none
ctldyw.com ↗	46 match 1 shared topics	yl23411永利(百度VIP认证)官方网站-最新版	zh	information-and-network-security	robotsllmsaihumans	emailphone	none
cssw.net ↗	45 match 1 shared topics	网神SecGate3600防火墙	zh	information-and-network-security	robotsllmsaihumans	emailphone	none
0day.tech ↗	45 match 1 shared topics	0day.tech \| Web安全	zh	information-and-network-security	robotsllmsaihumans	emailphone	none
0xlc.com ↗	45 match 1 shared topics	Alex	zh	computer-networking	robotsllmsaihumans	emailphone	none
360nextdns.com ↗	45 match 1 shared topics	360nextDNS 控制台	zh	computer-networking	robotsllmsaihumans	emailphone	none
bctis.net ↗	45 match 1 shared topics	ICBCTIS	zh	information-and-network-security	robotsllmsaihumans	emailphone	partial · 1
bddns.com ↗	45 match 1 shared topics	BDDNS.com - 智能动态域名解析服务	zh	computer-networking	robotsllmsaihumans	emailphone	partial · 8
v2android.com ↗	45 match 1 shared topics	v2ray android中文网	zh	information-and-network-security WordPress	robotsllmsaihumans	emailphone	none

How the match score works

Each match is a 0–100 similarity score — the higher it is, the more two sites resemble one another. It’s computed automatically from our own crawl data (never from what a site says about itself) by combining several independent signals, so a high score means several of them point the same way:

shared topics how many of the same fine‑grained content topics (IAB sub‑categories) both sites cover — the main signal.
same category whether they sit in the same business / industry category.
content & title how closely their titles and page descriptions line up in wording and meaning.

No single signal decides the result — they’re blended together. Treat the score as a way to rank candidates rather than an absolute percentage; the chips on each result show which signals contributed.