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Trustcheckr alternatives & similar sites

Truecaller – Identify Unknown Callers & Block Spam Calls — 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 Phone Services →

Domain	Match	Title	Country/Lang	Category	AI files	Contact	AI-protection
truecaller.com ↗	85 match shared topic	Truecaller – Identify Unknown Callers & Block Spam Calls	en	phone-services	robotsllmsaihumans	emailphone	none
somos.com ↗	37 match shared topic	Somos \| Restoring Trust in the World’s Communication	en	phone-services Drupal	robotsllmsaihumans	email phone	none
blockmarktech.com ↗	32 match shared topic	Home - BlockMark Technologies	en	information-and-network-security WordPress	robotsllmsaihumans	emailphone	none
credential.net ↗	32 match shared topic	Accredible • Certificates, Badges and Blockchain	en	information-and-network-security	robotsllmsaihumans	emailphone	none
certik.com ↗	32 match shared topic	Largest Blockchain Security Auditor - CertiK	en	information-and-network-security	robotsllmsaihumans	emailphone	none
botblocker.top ↗	32 match shared topic	Best Wordpress Security Plugin - BotBlocker	en	information-and-network-security WordPress WooCommerce	robotsllmsaihumans	emailphone	none
cyberscope.io ↗	32 match shared topic	Blockchain and Web3 Security Services \| Cyberscope	Greece~ en	information-and-network-security	robotsllmsaihumans	emailphone	none
astroblock.net ↗	32 match shared topic	AstroBlock \| Cybersecurity Services for Complete Protection	en	information-and-network-security	robotsllmsaihumans	emailphone	none
hashlock.com ↗	32 match shared topic	Smart Contract Audits & Blockchain Security \| Hashlock	en	information-and-network-security WordPress	robots llmsaihumans	emailphone	partial · 8
halborn.com ↗	32 match shared topic	Digital Asset and Blockchain Security Solutions \| Halborn	en	information-and-network-security	robotsllmsaihumans	emailphone	none
vicomsoft.com ↗	32 match shared topic	VICOMSOFT - Mac OS X & PC / Spam and Virus Protection / Web Filtering / Application Blocking	en	information-and-network-security	robotsllmsaihumans	emailphone	none
callsine.com ↗	32 match shared topic	CallSine	en	phone-services	robotsllmsaihumans	emailphone	none
freevoip.co.uk ↗	32 match shared topic	Cheap VoIP UK - did number provider UK - Free voip Calls UK	United Kingdom en	phone-services	robotsllmsaihumans	emailphone	none
slowmist.com ↗	32 match shared topic	SlowMist - Focusing on Blockchain Ecosystem Security (Exchange Security Audit \| Wallet Security Audit \| Blockchain Security Audit \| Smart Contract Security Audit \| Security Consulting \| Defense Deployment \| Blockchain Threat Intelligence \| Blockchain Security)	en	information-and-network-security	robotsllmsaihumans	emailphone	none
dnsfilter.com ↗	32 match shared topic	DNS Filtering Services: Security & Website Blocking \| DNSFilter	en	information-and-network-security HubSpot	robotsllmsaihumans	emailphone	none
smart-id.com ↗	32 match shared topic	Smart way to identify yourself - Smart-ID	en	information-and-network-security WordPress	robotsllmsaihumans	emailphone	none
getshieldsecurity.com ↗	32 match shared topic	Shield Security WordPress Plugin: Block Bots & Protect Customers	en	information-and-network-security WordPress WooCommerce	robotsllmsaihumans	emailphone	none
certik.org ↗	32 match shared topic	Largest Blockchain Security Auditor - CertiK	en	information-and-network-security	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.