COMCAST CORPORATION
One corporate group, resolved across 10 separately-registered clusters
in the same GLEIF corporate family (ultimate parent LEI 51M0QTTNCGUN7KFCFZ59). Each
member's own registration independently matches the family, so clusters that merely inherited a carrier's
LEI are excluded.
Data as of 2026-07-26
10 clusters ·
4,399 netblocks ·
79,278,517 IPv4 addresses ·
2,939 IPv6 prefixes ·
5 countries
IPv6 ranges (2,939)
showing the 15 largest allocationsMember clusters
- Comcast Cable Communications, LLC US-DE 4,150 netblocks
- Sky UK Limited GB 177 netblocks
- NBCUNIVERSAL INTERNATIONAL LIMITED 58 netblocks
- Sky Italia srl IT 31 netblocks
- Comcast International Holdings UK Limited 26 netblocks
- Sky Deutschland GmbH DE 5 netblocks
- NET-GB-NBCUniversal-International-Ltd 3 netblocks
- Versant Media Group, Inc. US-PA 2 netblocks
- BRITISH-SKY-BROADCASTING-LTD GB 2 netblocks
- NET-IT-NBCUniversal-International-Ltd 1 netblocks
Possibly related
Clusters that share this name but whose own registration doesn't confirm them as part of this corporate family — a different or unverified legal entity (a joint venture, a former subsidiary, or a namesake). Shown for context; not counted in the totals above.
- COMCAST INDIA ENGINEERING CENTER I LLP IN 5 netblocks
- COMCAST-FREEWHEEL US-DE 3 netblocks
- COMCAST-NBCU US-DE 3 netblocks
- Comcast-Boston US-PA 3 netblocks
- COMCAST_SOFTWARE_SOLUTIONS IN 2 netblocks
- COMCAST-GTT6 US-DE 2 netblocks
- Net3-Comcast 1 netblocks
- COMCAST-CORPORATION-MASERGY US-DE 1 netblocks
- COMCAST-NNJ-3 US-PA 1 netblocks
- Comcast-SV8 US-PA 1 netblocks