Alt Gr SA
BGP inherited
Cluster stats
Netblocks6
All fragments 574 blocks across 26 clusters
Cluster ID191598892
RegistryBGP
Customersfind customers using this network →
Evidence & provenance ?
Attribution BGP parent (inherited)
Shared handles clustered on 6 shared RIR contact/maintainer handles
Registry names 2 distinct registrant names across these blocks
full provenance (JSON) → · how attribution works

Footprint over time

2 weekly snapshots · JSON
6 0 netblocks since 2026-07-05
2026-07-05 peak 6 2026-07-06

IP Ranges (6)

⬇ export CSV
CIDR Org name Registry Status Confidence
185.88.76.0/22 Alt Gr SA BGP ANNOUNCED ● high
185.157.72.0/22 Alt Gr SA BGP ANNOUNCED ● high
185.54.172.0/22 Alt Gr SA RIPE ALLOCATED-ASSIGNED PA ● low
185.157.72.0/22 Alt Gr SA RIPE ALLOCATED-ASSIGNED PA ● low
2a02:4620::/32 Alt Gr SA RIPE ALLOCATED-BY-RIR ● low
2a07:a3c0::/29 Alt Gr SA RIPE ALLOCATED-BY-RIR ● low

Network trust

what's this?
RPKI hygiene: C how networks compare →
66.7% of checked blocks have valid RPKI ROA coverage (4 of 6)
Possible discrepancies (2)

These blocks are registered to Alt Gr SA 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.

2a02:4620::/32 /32 authorized for AS3303 — Swisscom (Schweiz) AG
185.54.172.0/22 /22 authorized for AS3303 — Swisscom (Schweiz) AG

NIC Handles

ALTGRSA-MNT AS202691 DUMY-RIPE DUMY-RIPE ORG-AGS9-RIPE RIPE-NCC-HM-MNT