WILLIAMS INTERNATIONAL CO., L.L.C.

Williams International
Data as of 2026-09-06
GLEIF verified
LEI
549300DF0KZNR9YFOS63
Registered name
WILLIAMS INTERNATIONAL CO., L.L.C.
Jurisdiction
US-MI
Ultimate parent
No parent on file in GLEIF
This organisation
Netblocks8 · 1,320 IPv4 addresses
IPv6 1 prefix (largest 2a00:2381:d534::/48)
Registered in United Kingdom (4) · United States (2) · BA (1)
Also registered under this name 141 netblocks across 52 separate records
Record ID236594113
RegistryARIN
Owner jurisdictionUS-MI
Customerssee who runs inside this network →
Evidence & provenance ?
Attribution GLEIF legal-entity match
Legal identityLEI 549300DF0KZNR9YFOS63
Shared handles clustered on 9 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 (8)

⬇ export CSV
CIDR Org name Registry Status Confidence
192.107.148.0/24 Williams International ARIN DIRECT ALLOCATION ● high
198.51.40.0/23 Williams International ARIN DIRECT ALLOCATION ● high
81.93.89.240/28 WILLIAMS-NET RIPE ASSIGNED PA ● low
81.143.5.120/29 WILLIAMS RIPE ASSIGNED PA ● low
193.133.244.0/23 WILLIAMS RIPE ASSIGNED PA ● low
217.36.59.8/29 WILLIAMS RIPE ASSIGNED PA ● low
217.40.86.168/29 WILLIAMS RIPE ASSIGNED PA ● low
2a00:2381:d534::/48 WILLIAMS-GROUP RIPE AGGREGATED-BY-LIR ● low

IPv6 ranges (1)

CIDR
2a00:2381:d534::/48

Footprint over time

6 weekly snapshots · JSON
8 +1 netblocks since 2026-07-26
2026-07-26 peak 8 2026-09-06

Network trust

what's this?
RPKI hygiene: C how networks compare →
62.5% of checked blocks have valid RPKI ROA coverage (5 of 8)
Possible discrepancies (1)

These blocks are registered to Williams International 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:d534::/48 /48 authorized for AS2856 — British Telecommunications Limited

NIC Handles

AS1849-MNT BTNET-MNT DUMY-RIPE DUMY-RIPE JM676-ARIN JM676-ARIN JM676-ARIN TELEKOM-SRPSKE-MNT WILLIA-2