High Sierra Networks, Inc.
Cluster stats
Netblocks1
All fragments 425 blocks across 163 clusters
Cluster ID193396203
RegistryARIN
Customersfind customers using this network →
Evidence & provenance ?
Attribution unresolved
Shared handles clustered on 4 shared RIR contact/maintainer handles
Registry names 1 distinct registrant name across these blocks
full provenance (JSON) → · how attribution works

IP Ranges (1)

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CIDR Org name Registry Status Confidence
208.75.132.0/22 High Sierra Networks, Inc. ARIN ● high

Network trust

what's this?
RPKI hygiene: A how networks compare →
100.0% of checked blocks have valid RPKI ROA coverage (1 of 1)
Possible discrepancies (1)

These blocks are registered to High Sierra Networks, Inc. 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.

208.75.132.0/22 /22 authorized for AS151338 — POLONETWORK LIMITED

NIC Handles

HIGHS36-ARIN HIGHS36-ARIN HIGHS36-ARIN HSN-19