Facebook tracking pixel
New Introducing Nuisance Detection

Trusted Communications Made Simple

Drive more value to your subscribers by providing caller intelligence that allows them to confidently answer or reject phone calls. Check out our next generation Caller ID solution.

When we say simple, we mean it.

We have made it our mission to simplify the integration process for carriers regardless of equipment and protocols. Check out our assortment of interface options.

Select an interface:
Request & Response


Platform specific, step-by-step integration guides

No reason to fear switching vendors, either! We have turn-key guides and platform experts available on demand.

We built OpenCNAM with you in mind.

Over the years we have paid close attention to what the carriers have to say. We view our service as a partnership and love making our partners happy!



World-class caller identification

Get more coverage, better results, at a lower price with OpenCNAM.
See how OpenCNAM compares to other providers.

New Entrants
Authoritative data with an industry-leading 87% match rate for accurate caller name values Selective use of carrier-supplied values leading to accuracy issues Carrier-supplied results which yield a 50-60% match-rate and leave many calls unidentified
Non-NANP coverage with CNAM data for 190+ countries Case-By-Case None
Highest data quality at the lowest price-point in the industry High-cost and non-authoritative proprietary data High-cost and low match-rate
Complete connectivity to the SS7 network for Network CNAM Incomplete with selective network access SS7 connectivity with selective cost-based routing
White glove technical support. Answers in minutes, not days Limited knowledge of the CNAM ecosystem Outsourced or uninformed support; lack of urgency
Real-time data; >99.999% uptime; no maintenance windows Relies on static databases to achieve uptime requirements Standard legacy system uptimes with maintenance windows
REST, SOAP/XML, SIP, ENUM, SS7/SIGTRAN Limited selection of interfaces Limited selection of interfaces
Highest detection rate with lowest number of false positives Relies on user-supplied values which leads to false positives Limited sources leading to sparse coverage and false positives
First ever authoritative Toll-Free CNAM database with Somos
Ad hoc collection of marketing data and user-supplied data for Toll-Free name values Sparse support with ad hoc values based on marketing data and some carrier-supplied values

Trusted by leaders in the industry

Our mission is to consistently deliver value to communications providers. Telo is more than a data vendor to our customers -- we are your partner. We are focused on ensuring high-quality subscriber experiences.

  • 1,500 + customers globally
  • 9 years + of uninterruped service
  • Billions of queries fulfilled each year

We've created a better subscriber experience.

It's our job to continuously improve our solutions by providing technologies which drive
more value from the carrier to the subscriber. Take a look at how we do that today.

Nuisance Call Detection

Nuisance Detection

OpenCNAM features Telo’s proprietary multi-signal nuisance call detection which in side-by-side testing has demonstrated the highest efficacy with the lowest false-positive rates of any solution available.

Nuisance Slider
Stop Nuisance Calls Carriers can easily set the scoring threshold and value displayed to alert subscribers to nuisance calls.

SHAKEN Verification

SHAKEN Verification

OpenCNAM provides telecommunications providers with a simple solution for SHAKEN verification to prevent call spoofing. OpenCNAM performs the verification as part of the CNAM query.

Toll-Free CNAM

Toll Free CNAM

Toll-Free numbers are showing up on subscriber telephones at an increasing rate. Businesses want their customers to recognize them when they call. Telo and Somos have partnered to form the first-ever Toll-Free CNAM database to provide that.

The Caller ID product is advanced. Everything else is simple.