PRECISION CASTPARTS CORP.
PRECISION CASTPARTS CORP
Data as of 2026-10-11
GLEIF verified
Complete entity footprint
9 linked clusters ·
95 netblocks ·
19,464 IPv4 addresses ·
27 IPv6 prefixes
This organisation's clusters combined by evidence —
shared GLEIF corporate family
— not name similarity, so genuinely different organisations that share a name are excluded.
LEI
0XOOAY5P5J7Q734SEC89
Registered name
PRECISION CASTPARTS CORP.
Jurisdiction
Ultimate parent
BERKSHIRE HATHAWAY INC.
5493000C01ZX7D35SD85
This organisation
| Netblocks | 17 · 5,152 IPv4 addresses |
| Also registered under this name | 18 netblocks across 2 separate records |
| Record ID | 245477516 |
| Registry | BGP |
| Owner jurisdiction | US-OR |
| Customers | see who runs inside this network → |
Evidence & provenance ?
| Attribution | GLEIF legal-entity match |
| Legal identity | LEI 0XOOAY5P5J7Q734SEC89 |
| Shared handles | clustered on 7 shared RIR contact/maintainer handles |
| Registry names | 2 distinct registrant names across these blocks |
| full provenance (JSON) → · how attribution works · report an issue | |
IP Ranges (17)
⬇ export CSV| CIDR | Org name | Registry | Status | Confidence |
|---|---|---|---|---|
| 12.154.166.64/27 | PRECISION CASTPARTS CORP | ARIN | ASSIGNMENT | ● high |
| 199.181.152.0/22 | PRECISION CASTPARTS CORP | ARIN | DIRECT ALLOCATION | ● high |
| 199.181.154.0/24 | PRECISION CASTPARTS CORP | BGP | ANNOUNCED | ● high |
| 204.155.96.0/20 | PRECISION CASTPARTS CORP | ARIN | DIRECT ALLOCATION | ● high |
| 204.155.96.0/24 | PRECISION CASTPARTS CORP | BGP | ANNOUNCED | ● high |
| 204.155.97.0/24 | PRECISION CASTPARTS CORP | BGP | ANNOUNCED | ● high |
| 204.155.98.0/24 | PRECISION CASTPARTS CORP | BGP | ANNOUNCED | ● high |
| 204.155.99.0/24 | PRECISION CASTPARTS CORP | BGP | ANNOUNCED | ● high |
| 204.155.100.0/24 | PRECISION CASTPARTS CORP | BGP | ANNOUNCED | ● high |
| 204.155.101.0/24 | PRECISION CASTPARTS CORP | BGP | ANNOUNCED | ● high |
| 204.155.102.0/24 | PRECISION CASTPARTS CORP | BGP | ANNOUNCED | ● high |
| 204.155.103.0/24 | PRECISION CASTPARTS CORP | BGP | ANNOUNCED | ● high |
| 204.155.104.0/24 | PRECISION CASTPARTS CORP | BGP | ANNOUNCED | ● high |
| 204.155.108.0/24 | PRECISION CASTPARTS CORP | BGP | ANNOUNCED | ● high |
| 204.155.109.0/24 | PRECISION CASTPARTS CORP | BGP | ANNOUNCED | ● high |
| 204.155.110.0/24 | PRECISION CASTPARTS CORP | BGP | ANNOUNCED | ● high |
| 204.155.111.0/24 | PRECISION CASTPARTS CORP | BGP | ANNOUNCED | ● high |
Footprint over time
16 weekly snapshots · JSON
17
+2 netblocks since 2026-07-05
2026-07-05
peak 17
2026-10-11
Corporate group (9 confirmed entities)
+1 additional unconfirmed candidate not shown — full list (JSON)- Energy LLC 44 blocks
- MidAmerican Energy Holdings Company 11 blocks
- Shaw Industries Group, Inc. 10 blocks
- Berkshire Hathaway Energy Company 10 blocks
- NATIONAL INDEMNITY COMPANY 4 blocks
- NORTHERN-POWERGRID-LTD 1 blocks
- CALEDONIAN-ALLOYS-LTD 1 blocks
- 21st Mortgage Corporation 1 blocks
Network trust
what's this?
RPKI hygiene: B
how networks compare →
82.4%
of checked blocks have valid RPKI ROA coverage
(14 of 17)
No discrepancies found among checked blocks.
NIC Handles
AS53571
KEMPR-ARIN
PCC-156
TRINH34-ARIN
WALDE39-ARIN
WALDE39-ARIN
WALDE39-ARIN