ZelNum vs ApiSIM

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

ZelNum compared with ApiSIM
Detail	ZelNum	ApiSIM
What it does	Phone number, carrier, and messaging app verification platform for contact list cleaning and fraud review	Your phone as an API for SMS, calls, recordings and transcripts
Stage	Not given	Not given
Founded	Not given	Not given
Based in	EE	NO
Pricing model	Paid	Paid
Pricing	Pay-as-you-go prepaid credits. WhatsApp: $0.5 per 10,000 lookups (bulk) or $0.008 per lookup (realtime). Telegram: $1.5 per 10,000 lookups (bulk) or $0.012 per lookup (realtime). HLR Lookup: $4 per 10,000 lookups. Carrier Lookup: $4 per 10,000 lookups. No subscription, minimum order 500–2,000 depend	Monthly subscription per connected line (exact price not specified in documentation). Recording and transcription are optional, charged from prepaid credits at rates shown in workspace. Credits are in US dollars and never expire while workspace is active.
Key features	Bulk CSV/TXT file upload and processing VoIP and disposable number detection Real-time single lookups and batch API jobs	Send SMS messages up to 1,600 characters Receive incoming SMS and calls as webhook events Outgoing calls with WebRTC audio for browser or AI Idempotent messaging with operation status tracking Model Context Protocol server for Claude and Cursor Included bridge minutes per month Conversation scoping per line and number API rate limiting and fair-use enforcement Dual-SIM support with separate credentials per line
What makes it different	45 verification tools in one workflow covering phone, carrier, messaging apps, and social platforms Global coverage across international phone datasets and carrier networks Pay-as-you-go credits with no subscription, minimum commitment, or recurring fees Scalable from free single lookups to bulk API workflows and high-volume batch jobs	Use your own Android phone and SIM instead of a phone number service Pay only per connected line; recording and transcription are optional and prepaid Calls merged on bridge preserve your business number to recipients Live AI voice support via WebRTC audio tracks Every resource reports whether it is real or simulated
Community votes	0	0
DR (Domain Rating by Ahrefs)	18 +1 (up) since last check	Not checked yet no change since last check
Trust Flow (Majestic)	15	0
Citation Flow (Majestic)	29	0
Referring domains (Majestic)	19	0

6 details filled in for both companies.

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