Office of The Manager National Communications Sys
About Office of The Manager National Communications Sys
The Office of The Manager National Communications System was the administrative office of the National Communications System (NCS), a former U.S. government entity under the Department of Homeland Security responsible for national security and emergency preparedness (NS/EP) telecommunications. It coordinated interconnectivity and survivability of federal agency communications facilities, primarily serving government agencies rather than commercial consumers, businesses, or wholesale markets. The NCS was disbanded in 2012 and merged into the DHS Office of Emergency Communications; any associated OCN and number blocks likely represented government-assigned resources rather than a commercial carrier operation.
- Parent: U.S. Department of Homeland Security (until 2012)
- Founded: 1963
- Headquarters: Arlington, VA
- Services: NS/EP telecommunications coordination, government network interconnectivity, emergency communications restoration
Sources: National Communications System - Wikipedia · Agencies - National Communications System - Federal Register · National Communications System Joins Homeland Security Department - DVIDS
Headquarters: Arlington, VA
Block portfolio at a glance
By age
- Recent (0). Last 18 mo
- Medium (0)
- Old (0)
- Undated (798)
Footprint by state
Stronger blue = more blocks issued in that state. ● marks states with activity in the last 18 months.
- XX XX · 798
Top area codes
Bars show total blocks; red overlay is recent.
Member OCNs
1 OCN roll up under Office of The Manager National Communications Sys.
| OCN | Company name on file | HQ | Type | Total | Recent |
|---|---|---|---|---|---|
| 4758 | Cybersecurity and Infrastructure Security Agency | Arlington, VA | Administrative / Reserved | 798 | · |