| SUBSIDIARIES OF THE REGISTRANT | ||
| Legal Name | Doing Business As | State or Other Jurisdiction of Incorporation or Organization |
| Black Box Corporation | Black Box Corporation | Delaware |
| ACS Communications, Inc. | ACS Communications, Inc. | Texas |
| ACS Dataline of the Northwest, Inc. | Black Box Network Services Black Box Network Services - Northwest Black Box Network Services - West | Oregon |
| ACS Investors, LLC | ACS Investors, LLC | Delaware |
| ACS Dataline, LP | Black Box Network Services Black Box Network Services - West | Texas |
| ADS Telecom, Inc. | Black Box Network Services | Florida |
| B & C Telephone, Inc. | Black Box Network Services Black Box Network Services - Spokane | Washington |
| BBox Holding Company | BBox Holding Company | Delaware |
| Advanced Network Technologies, Inc. | Black Box Network Services - California | California |
| Black Box Corporation of Pennsylvania | Black Box Network Services Black Box Network Services - Technology Product Solutions | Delaware |
| BB Technologies, Inc. | BB Technologies, Inc. | Delaware |
| Black Box A/S | Black Box A/S | Denmark |
| Black Box Canada Corporation | Black Box Canada Corporation | Canada |
| Black Box Comunicaciones, S.A. | Black Box Comunicaciones, S.A. | Spain |
| Black Box Datacom B.V. | Black Box Datacom B.V. | Netherlands |
| Black Box do Brasil Industria e Comercio Ltda. | Black Box do Brasil Industria e Comercio Ltda. | Brazil |
| Black Box France | Black Box France | France |
| Black Box GmbH | Black Box GmbH | Austria |
| Black Box International Holdings B.V. | Black Box International Holdings B.V. | Netherlands |
| BBOX Holdings Mexico LLC | BBOX Holdings Mexico LLC | Delaware |
| Black Box de Mexico, S. de R.L. de C.V. | Black Box de Mexico, S. de R.L. de C.V. | Mexico |
| Black Box Deutschland GmbH | Black Box Deutschland GmbH | Germany |
| Black Box Netzwerk Service GmbH | Black Box Netzwerk Service GmbH | Germany |
| SUBSIDIARIES OF THE REGISTRANT | ||
| Legal Name | Doing Business As | State or Other Jurisdiction of Incorporation or Organization |
| Black Box Network Services AG | Black Box Network Services AG | Switzerland |
| Black Box Network Services Australia Pty Ltd | Black Box Network Services Australia Pty Ltd | Australia |
| Black Box Network Services New Zealand Limited | Black Box Network Services New Zealand Limited | New Zealand |
| Black Box Network Services Co., Ltd. | Black Box Network Services Co., Ltd. | Japan |
| Black Box Network Services India Private Limited | Black Box Network Services India Private Limited | India |
| Black Box Network Services Korea Limited | Black Box Network Services Korea Limited | Korea |
| Black Box Network Services NV | Black Box Network Services NV | Belgium |
| Black Box Network Services S.r.l. | Black Box Network Services S.r.l. | Italy |
| Black Box Network Services (UK) Limited | Black Box Network Services (UK) Limited | England |
| Black Box P.R. Corp. | Black Box P.R. Corp. | Puerto Rico |
| Black Box LLC Holdings, Inc. | Black Box LLC Holdings, Inc. | Delaware |
| Nu-Vision Technologies, LLC | Black Box Network Services Black Box Network Services - Oregon | New York |
| BCS II, LLC | BCS II, LLC | Delaware |
| PS Technologies, LLC | Black Box Network Services Black Box Network Services - Western Operations | Maryland |
| PS Tech Video, LLC | Black Box Network Services | California |
| UCI Communications LLC | Black Box Network Services | South Carolina |
| Black Box Network Services, Inc. - Government Solutions | Black Box Network Services, Inc. - Government Solutions | Tennessee |
| Black Box Ventures Holding Company | Black Box Ventures Holding Company | Delaware |
| Delaney Telecom, Inc. | Black Box Network Services Black Box Network Services - East | Pennsylvania |
| DESIGNet, Inc. | Black Box Network Services - San Jose | California |
| InnerWireless, Inc. | Black Box Network Services Black Box Network Services - Wireless | Delaware |
| Jet Line Communications, Inc. | Black Box Network Services - Dallas | Texas |
| FBS Communications, L.P. | Black Box Network Services - San Antonio | Texas |
| SUBSIDIARIES OF THE REGISTRANT | ||
| Legal Name | Doing Business As | State or Other Jurisdiction of Incorporation or Organization |
| LOGOS Communications Systems, Inc. | Black Box Network Services Black Box Network Services - Cleveland | Ohio |
| Midwest Communications Technologies, Inc. | Black Box Network Services Black Box Network Services - Midwest | Ohio |
| Teldata Corporation | Black Box Network Services - Tennessee | Tennessee |
| Todd Communications, Inc. | Black Box Network Services - North Carolina | North Carolina |
| BBOX Holdings Puebla LLC | BBOX Holdings Puebla LLC | Delaware |
| Black Box Network Services Puebla, S.A. de C.V. | Black Box Network Services Puebla, S.A. de C.V. | Mexico |
| Black Box AB | Black Box AB | Sweden |
| Black Box Chile S.A. | Black Box Chile S.A. | Chile |
| Black Box Finland OY | Black Box Finland OY | Finland |
| Black Box Network Services AB | Black Box Network Services AB | Sweden |
| Black Box Network Services Corporation | Black Box Network Services Corporation | Taiwan |
| Black Box Network Services (Dublin) Limited | Black Box Network Services (Dublin) Limited | Ireland |
| Black Box Network Services SDN. BHD. | Black Box Network Services SDN. BHD. | Malaysia |
| Black Box Network Services Singapore Pte Ltd | Black Box Network Services Singapore Pte Ltd | Singapore |
| Black Box Norge AS | Black Box Norge AS | Norway |
| Black Box Services Company | Black Box Services Company | Delaware |
| CBS Technologies Corp. | Black Box Network Services | New York |
| Mutual Telecom Services Inc. | Black Box Network Services Black Box Network Services - Needham | Delaware |
| Network Communications Technologies, Inc. | Black Box Network Services Black Box Network Services - Charlotte | North Carolina |
| Norstan, Inc. | Black Box Network Services | Minnesota |
| Norstan Communications, Inc. | Black Box Network Services Black Box Network Services - Minnesota Black Box Network Services - Montana Black Box Network Services - Northeast | Minnesota |
| SUBSIDIARIES OF THE REGISTRANT | ||
| Legal Name | Doing Business As | State or Other Jurisdiction of Incorporation or Organization |
| NextiraOne, LLC | Black Box Network Services Black Box Network Services - Illinois Black Box Network Services - Midwest Black Box Network Services - Northeast Black Box Network Services - Northwest Black Box Network Services - South | Delaware |
| NextiraOne California L.P. | NextiraOne California L.P. | California |
| NXO Installation, LLC | NXO Installation, LLC | Delaware |
| NextiraOne Federal, LLC | Black Box Network Services Black Box Network Services - Federal | Delaware |
| Quanta Systems, LLC | Black Box Network Services - Federal Security Solutions | Delaware |
| NextiraOne New York, LLC | Black Box Network Services | Delaware |
| Norstan Canada, Ltd./Norstan Canada, Ltee | Black Box Network Services | Canada |
| Vibes Technologies, Inc. | Black Box Resale Services | Minnesota |
| Nu-Vision Technologies, Inc. | Black Box Network Services | New York |
| Scottel Voice & Data, Inc. | Black Box Network Services Black Box Network Services - Pacific | California |
