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Lunar Carrier Services

LRN and numbering data, one lookup away.

Lunar Carrier Services tells your switch where a number lives. Get real-time number portability (LRN) lookups and NPA-NXX routing and rating reference data, by API or by feed.

Request early accessHow it works

  1. What an LRN answers

    What an LRN answers.

    When someone keeps their number and moves to another carrier, the number is ported. Its NPA-NXX still points to the carrier the block was assigned to.

    The LRN, the Location Routing Number, identifies the switch that serves the number now, so the call can be routed to where the number lives.

    Example Fictional 555-01xx numbers: an illustration of what a lookup answers.
    Dialled number(NPA) 555-0142Ported: its owner moved it to another carrier.
    1. By its NPA-NXX
      Switch AThe carrier the block was assigned toThe number is not served here any more.
    2. By its LRN, (NPA) 555-0100
      Switch BThe switch that serves the number nowThe LRN identifies this switch. The call routes here.

  2. Numbering reference

    What numbering reference data is.

    Numbers are assigned to carriers in blocks. Numbering reference data describes those assignments: for each NPA-NXX, and each thousands-block within it, the operating company that holds it, its rate center and its LATA.

    Routing and rating both start from it. The industry's best-known directory of this kind is the LERG.

    1. 01 NPA-555

      NPA-NXX

      The area code and exchange code: a block of 10,000 numbers, held by one carrier or split into thousands-blocks.

    2. 02 NPA-555-0

      Thousands-block

      A thousand numbers within an NPA-NXX, which can be assigned to a different carrier from the rest of it.

    3. 03 Rate center A

      Rate center

      The area a number belongs to when a call to it is rated.

    4. 04 OCN A

      OCN

      The operating company number: which carrier holds the block.

    5. 05 LATA A

      LATA

      The local access and transport area the block sits in, which shapes a call's jurisdiction.

    Example Placeholder values, not real codes. An LRN answers for one ported number; the reference data describes the block every number belongs to. Carriers use both to route and rate calls. LERG™ is a trademark of iconectiv.

  3. Delivery

    Two ways to take it.

    Ask when a call needs an answer, or keep the data in your own systems. Which suits you depends on your traffic and the questions you ask per call.

    1. Query · API

      Ask, one number at a time

      Send a number and get back its routing answer. Ask about an NPA-NXX the same way, and get its reference entry.

    2. Feeds

      Take it whole

      Take the data as feeds into your own systems, and answer routing and rating questions there, without asking us per call.

  4. How it is run

    How it is run.

    By Lunar Systems, on servers we manage.

    1. Its own service

      Lunar Carrier Services stands on its own, apart from Astra.

    2. On Lunar's servers

      It runs in a virtual machine of its own.

    3. Behind Lunar's web edge

      The service itself does not face the internet. Its API is reached only through Lunar's web edge.

    Lunar NetworkHow we keep our network safe The network behind this service.

  5. Keys and limits

    Keys and limits for each carrier.

    Access takes an API key, and each carrier has its own keys and its own rate limits.

    API keys
    Your own keys and your own limits.
    Issued
    Access opens, and your keys are issued, once your data agreement is signed.

  6. At a glance

    At a glance.

    Availability: Early access

    ACCESS
    Early access, by request
    FOR
    Carriers and voice providers
    DATA
    LRN (number portability) and NPA-NXX routing and rating reference data
    DELIVERY
    An API, and feeds
    AGREEMENT
    Access opens once your data agreement is signed
    REQUEST
    hello@lunarsystems.io

  7. Early access

    Request early access.

    Lunar Carrier Services is open for early access to carriers and voice providers. Email hello@lunarsystems.io and tell us what you need.

    • LRN lookups over the API One number at a time, answered in real time.
    • NPA-NXX reference data Ask per block, or take it whole.
    • Feeds Into your own systems, to answer routing and rating questions there.
    • A data agreement for each carrier Access opens once it is signed.
    • API keys and per-carrier rate limits Your own keys and your own limits.

    How early access works.

    Tell us your traffic, the questions you ask per call and whether you would rather query or take feeds. We scope the data and the delivery with you. Access opens, and your keys are issued, once your data agreement is signed.

    Request early access

Tell us what you need.

If you are a carrier or voice provider and you use LRN lookups or NPA-NXX reference data, request early access and tell us how: your traffic, the questions you ask per call, and whether you would rather query or take feeds. We will reply.

Request early accesshello@lunarsystems.ioLunar Carrier Services