Jefferson Group, LLC

JEFFERSON CO. CABLE, INC.
Data as of 2026-09-06
GLEIF verified
LEI
254900ZTR7SG7GZJ4571
Registered name
Jefferson Group, LLC
Jurisdiction
US-CT
Ultimate parent
No parent on file in GLEIF
This organisation
Netblocks18 · 6,912 IPv4 addresses
IPv6 2 prefixes (largest 2607:c640:1::/48)
Also registered under this name 72 netblocks across 23 separate records
Record ID236522078
RegistryBGP
Owner jurisdictionUS-CT
Customerssee who runs inside this network →
Evidence & provenance ?
Attribution GLEIF legal-entity match
Legal identityLEI 254900ZTR7SG7GZJ4571
Shared handles clustered on 9 shared RIR contact/maintainer handles
Registry names 3 distinct registrant names across these blocks
full provenance (JSON) → · how attribution works · report an issue

IP Ranges (18)

⬇ export CSV
CIDR Org name Registry Status Confidence
24.223.42.0/23 JEFFERSON CO. CABLE, INC. BGP ANNOUNCED ● high
24.223.53.0/24 JEFFERSON CO. CABLE, INC. BGP ANNOUNCED ● high
24.223.55.0/24 JEFFERSON CO. CABLE, INC. BGP ANNOUNCED ● high
24.223.61.0/24 JEFFERSON CO. CABLE, INC. BGP ANNOUNCED ● high
24.223.62.0/24 JEFFERSON CO. CABLE, INC. BGP ANNOUNCED ● high
24.223.68.0/24 JEFFERSON CO. CABLE, INC. BGP ANNOUNCED ● high
198.252.112.0/22 JEFFERSON CO. CABLE, INC. BGP ANNOUNCED ● high
198.252.112.0/20 JEFFERSON CO. CABLE, INC. ARIN DIRECT ALLOCATION ● high
198.252.116.0/22 JEFFERSON CO. CABLE, INC. BGP ANNOUNCED ● high
198.252.120.0/24 JEFFERSON CO. CABLE, INC. BGP ANNOUNCED ● high
198.252.121.0/24 JEFFERSON CO. CABLE, INC. BGP ANNOUNCED ● high
198.252.122.0/23 JEFFERSON CO. CABLE, INC. BGP ANNOUNCED ● high
198.252.124.0/22 JEFFERSON CO. CABLE, INC. BGP ANNOUNCED ● high
199.180.136.0/23 JEFFERSON CO. CABLE, INC. BGP ANNOUNCED ● high
199.180.136.0/22 JEFFERSON CO. CABLE, INC. ARIN DIRECT ALLOCATION ● high
199.180.138.0/23 JEFFERSON CO. CABLE, INC. BGP ANNOUNCED ● high
2607:c640:1::/48 JEFFERSON CO. CABLE, INC. BGP ANNOUNCED ● high
2a00:2381:2f04::/48 JEFFERSON-COMMUNICATIONS RIPE AGGREGATED-BY-LIR ● low

IPv6 ranges (2)

CIDR
2607:c640:1::/48
2a00:2381:2f04::/48

Footprint over time

11 weekly snapshots · JSON
18 +1 netblocks since 2026-07-05
2026-07-05 peak 18 2026-09-06

Network trust

what's this?
RPKI hygiene: F how networks compare →
5.6% of checked blocks have valid RPKI ROA coverage (1 of 18)
Possible discrepancies (1)

These blocks are registered to JEFFERSON CO. CABLE, INC. but cryptographically authorized for a different, unrelated network (1 distinct holder) — often M&A history, multi-homing, or outsourced/managed hosting, occasionally worth a closer look.

2a00:2381:2f04::/48 /48 authorized for AS2856 — British Telecommunications Limited

NIC Handles

AS54934 BKL28-ARIN BKL28-ARIN BKL28-ARIN BKL28-ARIN BTNET-MNT DUMY-RIPE DUMY-RIPE JC-39