Clark Core Services, LLC

Clark Associates, Inc.
Data as of 2026-08-23
GLEIF verified
LEI
549300X2S08IZLNUKE36
Registered name
Clark Core Services, LLC
Jurisdiction
US-PA
Ultimate parent
No parent on file in GLEIF
Cluster stats
Netblocks11 · 1,408 IPv4 addresses
IPv6 5 prefixes (largest 2620:136:7000::/40)
Cluster ID227003698
RegistryBGP
Owner jurisdictionUS-PA
Customersfind customers using this network →
Evidence & provenance ?
Attribution GLEIF legal-entity match
Legal identityLEI 549300X2S08IZLNUKE36
Shared handles clustered on 8 shared RIR contact/maintainer handles
Registry names 2 distinct registrant names across these blocks
full provenance (JSON) → · how attribution works · report an issue

Footprint over time

9 weekly snapshots · JSON
14 +6 netblocks since 2026-07-05
2026-07-05 peak 14 2026-08-23

IP Ranges (11)

⬇ export CSV
CIDR Org name Registry Status Confidence
50.234.136.0/24 Clark Associates, Inc. BGP ANNOUNCED ● high
50.234.137.0/24 Clark Associates, Inc. BGP ANNOUNCED ● high
67.159.200.0/24 Clark Associates, Inc. BGP ANNOUNCED ● high
155.130.140.0/25 Clark Associates, Inc. ARIN ASSIGNMENT ● high
158.51.243.0/24 Clark Associates, Inc. ARIN DIRECT ALLOCATION ● high
198.246.233.0/24 Clark Associates, Inc. BGP ANNOUNCED ● high
2001:428:a202:10c::/64 Clark Associates, Inc. ARIN ASSIGNMENT ● high
2001:559:719::/48 Clark Associates, Inc. BGP ANNOUNCED ● high
2001:559:c1d1::/48 Clark Associates, Inc. BGP ANNOUNCED ● high
2606:a600:4::/48 Clark Associates, Inc. BGP ANNOUNCED ● high
2620:136:7000::/40 Clark Associates, Inc. ARIN DIRECT ALLOCATION ● high

IPv6 ranges (5)

CIDR
2620:136:7000::/40
2001:559:719::/48
2001:559:c1d1::/48
2606:a600:4::/48
2001:428:a202:10c::/64

Network trust

what's this?
RPKI hygiene: D how networks compare →
28.6% of checked blocks have valid RPKI ROA coverage (4 of 14)
No discrepancies found among checked blocks.

NIC Handles

ARINP58-ARIN ARINP58-ARIN ARINP58-ARIN AS395676 AS395680 AS397933 CA-725 CLARK1284-ARIN