The SPIDER Registry is the first and only neutral, secure, industry-managed registry of service provider controlled interconnect addressing information. SPIDER Registry's name is an acronym for Service Provider ID E.164 Record Registry, which signifies the linkage of a VoIP Service Provider ID (SPID) with the International Telecommunications Union's E.164 standard for international telephone numbers. SPIDER will provide communications service providers and VoIP communities with the core set of shared database tools necessary to facilitate the easy uploading, management and distribution of interconnect address information with trusted partners. The shared addressing services provided by SPIDER will facilitate worldwide VoIP peering between communications service providers and VoIP communities.

The SPIDER database services are provided exclusively through Registrars that are allowed to create and administer SPIDER accounts for their service provider customers. Service providers can choose from a number of competitive Registrars to manage their interconnect addressing relationships through SPIDER. SPIDER Registrars utilize an openly published SOAP/

SPIDER Registry, Inc. has awarded the initial contract to develop and operate the shared registry database services to NetNumber, Inc, a leader in the development of carrier-grade addressing solutions. The SPIDER data distribution protocol will be made available to all ENUM/SIP addressing servers on equal terms and conditions to maximise the freedom of choice of the VoIP industry. SPIDER services are made available on an equal-access basis to any Registrar that wants to utilise the Registry's tools to provide SPIDER services to service providers – opening up the availability of the services in all major languages and currencies around the world. A Service Provider can change Registrars without impacting its VoIP services or number-sharing relationships. The cost of SPIDER services is directly related to the usefulness of the service. The only fee charged to Registrars is a small fee for ‘successful-queries’ that utilise SPIDER data. There are no costs to create, administer or provision numbers or interconnect addresses within a SPIDER account. Registrars will be able to price this service for local market conditions and are able to offer a broad range of VoIP interconnection services including hosted address resolution, transport and signaling services that leverage SPIDER data. Arbinet's PeeringSolutions service has been certified as the first SPIDER Registrar. PacketExchange, the wide-area peering innovator, has also announced it will offer Spider Registrar services to its customers.
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