Cornerstone

Cornerstone Communications, LLC
Data as of 2026-10-04
GLEIF verified
LEI
529900U1QAXH8I5K9G40
Registered name
Cornerstone
Jurisdiction
LU
Ultimate parent
No parent on file in GLEIF
This organisation
Netblocks12 · 3,476 IPv4 addresses
IPv6 1 prefix (largest 2604:5300::/32)
Registered in Sweden (5) · United States (3) · United Kingdom (1) · Nigeria (1) · Poland (1)
Also registered under this name 45 netblocks across 19 separate records
Record ID245520033
RegistryAFRINIC
Owner jurisdictionLU
Customerssee who runs inside this network →
Evidence & provenance ?
Attribution GLEIF legal-entity match
Legal identityLEI 529900U1QAXH8I5K9G40
Shared handles clustered on 13 shared RIR contact/maintainer handles
Registry names 4 distinct registrant names across these blocks
full provenance (JSON) → · how attribution works · report an issue

IP Ranges (12)

⬇ export CSV
CIDR Org name Registry Status Confidence
199.21.176.0/22 Cornerstone Communications, LLC ARIN DIRECT ALLOCATION ● high
199.45.28.0/22 Cornerstone Communications, LLC ARIN DIRECT ALLOCATION ● high
208.93.12.0/22 Cornerstone Communications, LLC ARIN DIRECT ALLOCATION ● high
2604:5300::/32 Cornerstone Communications, LLC ARIN DIRECT ALLOCATION ● high
31.192.98.56/29 CORNERSTONE RIPE ASSIGNED PA ● low
77.252.102.156/30 CORNERSTONE RIPE ASSIGNED PA ● low
212.73.30.0/24 CORNERSTONE-NET RIPE ASSIGNED PA ● low
212.73.31.0/27 CORNERSTONE-NET RIPE ASSIGNED PA ● low
212.73.31.32/27 CORNERSTONE-NET RIPE ASSIGNED PA ● low
212.73.31.64/27 CORNERSTONE-NET RIPE ASSIGNED PA ● low
212.73.31.96/27 CORNERSTONE-NET RIPE ASSIGNED PA ● low
217.117.9.160/29 CORNERSTONE AFRINIC ASSIGNED PA ● low

IPv6 ranges (1)

CIDR
2604:5300::/32

Footprint over time

9 weekly snapshots · JSON
12 +1 netblocks since 2026-08-09
2026-08-09 peak 12 2026-10-04

Network trust

what's this?
RPKI hygiene: B how networks compare →
83.3% of checked blocks have valid RPKI ROA coverage (10 of 12)
Possible discrepancies (1)

These blocks are registered to Cornerstone Communications, LLC 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.

212.73.30.0/24 /24 authorized for AS2119 — Telenor Norge AS

NIC Handles

ABUSE1865-ARIN ADMIN1318-ARIN CCL-216 DUMY-RIPE DUMY-RIPE GST-NG HOSTM1149-ARIN NETIA-MNT NOC2972-ARIN TNSE-MNT WAVENET-MNT YS2-AFRINIC +1 more