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4 Carriers Sp. z o.o. Poland

Termination, Call Routing VoIP Solutions, SIP, H.323 Softswitch & CPE, H.323 VoIP Gateway, H.323 Wireless/ GSM VoIP Solutions,

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General office

4 Carriers Sp. z o.o.
Aleje Jerozolimskie 42/67
Warsaw
Mazowieckie ,00-024
Poland

Phone: +48 397 77 77
Phone: +48223977777
Contact Person

Piotr Slowinski
Phone: +48223977777
Phone: +48608303030
  • Wholesale VoIP Carrier
  • Termination
  • Cisco Systems
  • another
NetTEL
Crowley Data Poland Sp. z o.o.
Providers in database: 6433
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Free In-Network Calling

Free In-Network CallingCalls within the operator’s network are absolutely free of charge.

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United Kingdom NumberGroup

NumberGroup provides business quality VoIP services to wholesale operators and SIP Trunk customers worldwide. We have over 1,000,000 UK and Internaiton telephone numbers are are a license UK operator with direct PSTN connectivity.

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