SKANSKA USA INC
Data as of 2026-07-26
BGP inherited
Cluster stats
| Netblocks | 9 · 8,192 IPv4 addresses |
| IPv6 | 2 prefixes (largest 2602:800:c400::/38) |
| Cluster ID | 214414418 |
| Registry | BGP |
| Customers | find customers using this network → |
Evidence & provenance ?
| Attribution | BGP parent (inherited) |
| 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 | |
Footprint over time
6 weekly snapshots · JSON
9
0 netblocks since 2026-07-05
2026-07-05
peak 9
2026-07-26
IP Ranges (9)
⬇ export CSV| CIDR | Org name | Registry | Status | Confidence |
|---|---|---|---|---|
| 144.57.32.0/19 | Skanska USA Inc | RIPE | LEGACY | ● high |
| 144.57.40.0/21 | SKANSKA USA INC | BGP | ANNOUNCED | ● high |
| 144.57.40.0/24 | SKANSKA USA INC | BGP | ANNOUNCED | ● high |
| 144.57.41.0/24 | SKANSKA USA INC | BGP | ANNOUNCED | ● high |
| 144.57.48.0/21 | SKANSKA USA INC | BGP | ANNOUNCED | ● high |
| 144.57.48.0/24 | SKANSKA USA INC | BGP | ANNOUNCED | ● high |
| 144.57.49.0/24 | SKANSKA USA INC | BGP | ANNOUNCED | ● high |
| 2602:800:c400::/38 | SKANSKA USA INC | BGP | ANNOUNCED | ● high |
| 2602:800:c800::/38 | SKANSKA USA INC | BGP | ANNOUNCED | ● high |
IPv6 ranges (2)
Network trust
what's this?
RPKI hygiene: C
how networks compare →
66.7%
of checked blocks have valid RPKI ROA coverage
(6 of 9)
No discrepancies found among checked blocks.
NIC Handles
AS398577
AS398642
DUMY-RIPE
DUMY-RIPE
ORG-SUI3-RIPE
SKANSKA-MNT
SKANSKA-MNT