CSC

CSC Holdings Inc.,
Data as of 2026-09-05
GLEIF verified
Complete entity footprint
2 linked clusters · 213 netblocks · 5,238,647 IPv4 addresses · 23 IPv6 prefixes
This organisation's clusters combined by evidence — shared operating domain cv.net — not name similarity, so genuinely different organisations that share a name are excluded.
View the full entity page →
LEI
969500TZOAK84E3BDC75
Registered name
CSC
Jurisdiction
FR
Ultimate parent
No parent on file in GLEIF
This organisation
Netblocks91 · 34,672 IPv4 addresses
IPv6 5 prefixes (largest 2620:0:50a0::/48)
Registered in United Kingdom (44) · KZ (11) · United States (5) · KW (4) · China (4) · Italy (4)
Also registered under this name 400 netblocks across 114 separate records
Record ID232241392
RegistryAPNIC
Owner jurisdictionFR
Customerssee who runs inside this network →
Evidence & provenance ?
Attribution GLEIF legal-entity match
Legal identityLEI 969500TZOAK84E3BDC75
Shared handles clustered on 35 shared RIR contact/maintainer handles
Registry names 7 distinct registrant names across these blocks
full provenance (JSON) → · how attribution works · report an issue

Footprint over time

10 weekly snapshots · JSON
91 +2 netblocks since 2026-07-05
2026-07-05 peak 91 2026-08-30

IP Ranges (91)

⬇ export CSV
CIDR Org name Registry Status Confidence
24.157.0.0/20 CSC Holdings Inc., ARIN ASSIGNMENT ● high
64.15.0.0/20 CSC Holdings Inc., ARIN DIRECT ALLOCATION ● high
65.19.96.0/19 CSC Holdings Inc., ARIN DIRECT ALLOCATION ● high
67.59.224.0/19 CSC Holdings Inc., ARIN DIRECT ALLOCATION ● high
123.127.189.112/28 CSC APNIC ASSIGNED NON-PORTABLE ● high
148.76.224.0/19 CSC Holdings Inc., ARIN ALLOCATION ● high
180.168.65.16/30 CSC APNIC ASSIGNED NON-PORTABLE ● high
2620:0:50a0::/48 CSC Holdings Inc., ARIN DIRECT ALLOCATION ● high
59.154.52.128/25 CSC APNIC ASSIGNED NON-PORTABLE ● low
62.172.148.136/29 CSC RIPE ASSIGNED PA ● low
62.252.201.224/28 CSC RIPE ASSIGNED PA ● low
80.207.50.120/29 CSC-SRL RIPE ASSIGNED PA ● low
81.131.249.176/29 CSC RIPE ASSIGNED PA ● low
81.131.249.184/29 CSC RIPE ASSIGNED PA ● low
81.131.249.192/29 CSC RIPE ASSIGNED PA ● low
81.131.249.200/29 CSC RIPE ASSIGNED PA ● low
81.131.249.208/29 CSC RIPE ASSIGNED PA ● low
81.131.249.216/29 CSC RIPE ASSIGNED PA ● low
81.138.34.128/28 CSC RIPE ASSIGNED PA ● low
81.138.96.208/29 CSC RIPE ASSIGNED PA ● low
81.138.119.104/29 CSC RIPE ASSIGNED PA ● low
81.138.119.232/29 CSC RIPE ASSIGNED PA ● low
81.138.119.240/29 CSC RIPE ASSIGNED PA ● low
81.138.120.136/29 CSC RIPE ASSIGNED PA ● low
81.138.123.32/29 CSC RIPE ASSIGNED PA ● low
81.138.126.56/29 CSC RIPE ASSIGNED PA ● low
81.138.127.136/29 CSC RIPE ASSIGNED PA ● low
81.138.182.200/29 CSC RIPE ASSIGNED PA ● low
81.138.184.40/29 CSC RIPE ASSIGNED PA ● low
81.138.184.232/29 CSC RIPE ASSIGNED PA ● low
81.138.188.40/29 CSC RIPE ASSIGNED PA ● low
81.142.179.112/29 CSC RIPE ASSIGNED PA ● low
81.142.188.168/29 CSC RIPE ASSIGNED PA ● low
81.142.189.32/29 CSC RIPE ASSIGNED PA ● low
81.142.195.72/29 CSC RIPE ASSIGNED PA ● low
81.142.200.88/29 CSC RIPE ASSIGNED PA ● low
81.142.200.224/29 CSC RIPE ASSIGNED PA ● low
81.142.201.112/29 CSC RIPE ASSIGNED PA ● low
81.143.10.136/29 CSC RIPE ASSIGNED PA ● low
81.143.44.80/29 CSC RIPE ASSIGNED PA ● low
81.143.50.112/29 CSC RIPE ASSIGNED PA ● low
81.143.101.96/29 CSC RIPE ASSIGNED PA ● low
81.150.207.48/28 CSC RIPE ASSIGNED PA ● low
81.150.213.128/28 CSC RIPE ASSIGNED PA ● low
83.145.123.112/29 CSC RIPE ASSIGNED PA ● low
85.125.80.128/29 CSC-GmbH RIPE ASSIGNED PA ● low
86.188.198.192/26 CSC RIPE ASSIGNED PA ● low
88.204.128.8/29 CSC RIPE ASSIGNED PA ● low
88.204.154.124/30 CSC RIPE ASSIGNED PA ● low
88.204.237.128/30 CSC RIPE ASSIGNED PA ● low
89.106.234.0/28 CSC RIPE ASSIGNED PA ● low
89.218.230.192/26 CSC RIPE ASSIGNED PA ● low
92.46.58.96/29 CSC RIPE ASSIGNED PA ● low
93.95.243.80/30 CSC RIPE ASSIGNED PA ● low
93.95.243.84/30 CSC RIPE ASSIGNED PA ● low
93.95.243.88/30 CSC RIPE ASSIGNED PA ● low
95.56.226.112/29 CSC RIPE ASSIGNED PA ● low
95.56.254.160/29 CSC RIPE ASSIGNED PA ● low
193.15.253.144/29 SE-CSC-CORPORATION-NET RIPE ASSIGNED PA ● low
193.15.253.152/29 SE-CSC-CORPORATION-NET RIPE ASSIGNED PA ● low
193.65.231.148/30 CSC RIPE ASSIGNED PA ● low
193.192.240.128/30 CSC-NET RIPE ASSIGNED PA ● low
194.165.140.208/30 CSC RIPE ASSIGNED PA ● low
195.69.174.136/29 CSC-NET RIPE ASSIGNED PA ● low
212.68.11.48/28 CSC-NET RIPE ASSIGNED PA ● low
212.83.205.20/30 CSC RIPE ASSIGNED PA ● low
212.98.57.216/29 CSC-NET RIPE ASSIGNED PA ● low
213.34.200.0/24 CSC RIPE ASSIGNED PA ● low
213.34.201.0/24 CSC RIPE ASSIGNED PA ● low
213.34.202.0/24 CSC RIPE ASSIGNED PA ● low
213.34.213.0/24 CSC RIPE ASSIGNED PA ● low
217.24.207.64/29 CSC RIPE ASSIGNED PA ● low
217.34.79.24/29 CSC RIPE ASSIGNED PA ● low
217.34.135.32/28 CSC RIPE ASSIGNED PA ● low
217.39.140.232/29 CSC RIPE ASSIGNED PA ● low
217.39.150.48/29 CSC RIPE ASSIGNED PA ● low
217.39.155.240/29 CSC RIPE ASSIGNED PA ● low
217.39.157.136/29 CSC RIPE ASSIGNED PA ● low
217.40.85.160/29 CSC RIPE ASSIGNED PA ● low
217.40.163.0/29 CSC RIPE ASSIGNED PA ● low
217.40.221.240/29 CSC RIPE ASSIGNED PA ● low
217.193.169.48/29 CSC-NET RIPE ASSIGNED PA ● low
217.223.115.112/29 CSC-SRL RIPE ASSIGNED PA ● low
217.223.115.120/29 CSC-SRL RIPE ASSIGNED PA ● low
217.223.115.136/29 CSC-SRL RIPE ASSIGNED PA ● low
222.177.208.32/28 CSC APNIC ASSIGNED NON-PORTABLE ● low
222.178.73.208/29 CSC APNIC ASSIGNED NON-PORTABLE ● low
2a00:2381:373::/56 CSC RIPE ASSIGNED ● low
2a00:2381:373::/48 CSC RIPE AGGREGATED-BY-LIR ● low
2a00:2381:373:300::/56 CSC RIPE ASSIGNED ● low
2a00:2381:fe27:200::/56 CSC RIPE ASSIGNED ● low

IPv6 ranges (5)

CIDR
2620:0:50a0::/48
2a00:2381:373::/48
2a00:2381:373:300::/56
2a00:2381:373::/56
2a00:2381:fe27:200::/56

Domains hosted in this network

what's this?
googlevideo.com

Network trust

what's this?
RPKI hygiene: B how networks compare →
84.6% of checked blocks have valid RPKI ROA coverage (77 of 91)
Possible discrepancies (5)

These blocks are registered to CSC Holdings Inc., but cryptographically authorized for a different, unrelated network (2 distinct holders) — often M&A history, multi-homing, or outsourced/managed hosting, occasionally worth a closer look.

2a00:2381:373::/48 /48 authorized for AS2856 — British Telecommunications Limited
2a00:2381:fe27:200::/56 /56 authorized for AS2856 — British Telecommunications Limited
2a00:2381:373::/56 /56 authorized for AS2856 — British Telecommunications Limited
2a00:2381:373:300::/56 /56 authorized for AS2856 — British Telecommunications Limited
148.76.224.0/19 /19 authorized for AS6128 — Cablevision Systems Corp.

NIC Handles

AC2530-AP AS1764-MNT AS5089-MNT AS6730-MNT AS9150-MNT BTNET-MNT CH-UNISOURCE-MNT CIO1-ARIN COMPLETEL-MNT CSCHO DUMY-RIPE DUMY-RIPE +23 more