didchecks.com

What it is

DIDChecks is a phone number reputation checking and monitoring service. Its core purpose is to determine whether outbound calling numbers have been labeled as “Spam Risk/Spam Likely.” It targets teams that rely heavily on phone outreach, such as call centers, insurance, home improvement, lead generation, real estate, and healthcare. The service offers instant checks, bulk audits, automated monitoring and alerts, and can be embedded into CRMs, dialers, or internal systems via API.

Core capabilities and developer experience

Based on the available materials, DIDChecks focuses on number checks, monitoring, and automation. The single-number API can return whether a number is spam, its spamScore, spamType, number type, country code, carrier, and source data from providers such as Hiya, Truecaller, and Orange. The bulk API supports up to 100 numbers per request. Routines can continuously monitor numbers on an interval or weekly schedule. Webhooks support events such as spam_status_changed, routine_check_completed, and credits_low, with HMAC-SHA256 signatures, making them suitable for automated number rotation and alerting workflows.

The API documentation is relatively complete, covering Bearer Token authentication, token reset, history export, balance, transactions, invoices, error codes, and retry strategies. It also provides examples in cURL, Node.js, PHP, and Python. However, there are some consistency issues: the Base URL appears as both didchecks.com/api and api.didchecks.com/v1, and rate limits are described differently as 10 req/sec, 5 req/sec, and 100 req/sec for large customers. These details should be confirmed with the provider before a production integration.

Pricing and value for money

The entry price is low: Starter is $5/month with 100 verifications included, while Growth is $19/month with 375 verifications included. Annual billing gives a 15% discount. The site also highlights a per-check price of $0.35/check, with Routine checks also charged at $0.35 each, excluding taxes. All plans include REST API access, unlimited history, rollover of unused verifications, and Discord/Webhook alerts. For small sales teams or pilot projects, the value is attractive; high-volume call centers should further confirm enterprise plans, rate limits, and bulk pricing.

Pros, cons, and who it is for

The strengths are its focused use case, broad API coverage, rich alerting channels, and direct fit for dialer workflows that automatically remove “burned” numbers. The drawbacks are that it does not disclose whether it is open source or self-hostable, the company’s location, supported payment methods, or a detailed data retention policy. Some marketing metrics and customer testimonials are not independently verifiable. There is also no clear information about coverage for mainland China carrier numbers, network availability in China, or payment support.

Access from China and alternatives

Access from China is unknown. Since the service is mainly built around Western telecom and reputation ecosystems such as AT&T, Verizon, T-Mobile, Hiya, and Truecaller, users applying it to mainland China phone operations should first verify number database coverage, API latency, compliance requirements, and payment availability. Alternatives to compare include Hiya, Truecaller, Nomorobo, carrier-level anti-spam capabilities, or building an in-house approach within your own dialer using answer rates, complaint rates, and number rotation strategies.