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District of Columbia Automotive Information Services
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District of Columbia Communications Services Common Carriers
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District of Columbia Converting paper into mailing envelopes and other mailers
District of Columbia Data Communication Service
District of Columbia Data Communications equipment & Systems
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District of Columbia Data Communications Systems Networks
District of Columbia Data encryption services
District of Columbia Data Processing, Hosting, and Related Services
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District of Columbia Database development services
District of Columbia Deaf Communication Aids
District of Columbia E mail forwarding services
District of Columbia Electric meter reading and data analysis
District of Columbia Electronic data interchange (EDI) services
District of Columbia Electronic Mail Service
District of Columbia Electronic transmission of messages and data
District of Columbia Engineers Communications
District of Columbia Facsimile Communication equipment
District of Columbia Facsimile Communication equipment Syst Supplies
District of Columbia Gas meter reading and data analysis
District of Columbia Information Bureaus
District of Columbia Information Provider Services Dial It
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District of Columbia Intercommunication equipment Systems & Services
District of Columbia Lasers Communication Research & Development
District of Columbia Mail Boxes
District of Columbia Mail Chutes
District of Columbia Mail order catalog services
District of Columbia Mail Order Fulfillment Service
District of Columbia Mail Receiving Service
District of Columbia Mail sorting, handling and receiving
District of Columbia Mail Sorting Service
District of Columbia Mailing Containers
District of Columbia Mailing list preparation
District of Columbia Mailing Lists
District of Columbia Mailing Services
District of Columbia Media duplication of data and digital information
District of Columbia Message delivery
District of Columbia Message transcription
District of Columbia Messenger Service
District of Columbia Microwave Communications equipment & System
District of Columbia Preparing mailing lists
District of Columbia Private Mail Centers
District of Columbia Providing consumer information
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District of Columbia Providing flight arrival and departure information
District of Columbia Providing frame relay connectivity services for data transfer
District of Columbia Providing information about the trading
District of Columbia Providing information about wine characteristics
District of Columbia Providing information about wine making
District of Columbia Providing information in the field of self improvement
District of Columbia Providing newsletters via e mail
District of Columbia Providing statistical information
District of Columbia Providing trade information
District of Columbia Satellite communication services
District of Columbia Seismic Data Brokers
District of Columbia Voice Mail Messaging Service
District of Columbia Voice mail services
District of Columbia Water meter reading and data analysis
District of Columbia Wireless broadband communication services
District of Columbia Wireless facsimile mail services
District of Columbia Wireless voice mail services