Grand Valley State University

Data as of 2026-08-09
BGP inherited
Cluster stats
Netblocks12 · 262,144 IPv4 addresses
IPv6 1 prefix (largest 2605:7dc0::/32)
All fragments 22 blocks across 2 clusters
Cluster ID218620332
RegistryARIN
Customersfind customers using this network →
Evidence & provenance ?
Attribution BGP parent (inherited)
Shared handles clustered on 9 shared RIR contact/maintainer handles
Registry names 1 distinct registrant name across these blocks
full provenance (JSON) → · how attribution works · report an issue

IP Ranges (12)

⬇ export CSV
CIDR Org name Registry Status Confidence
35.38.0.0/16 Grand Valley State University ARIN ASSIGNMENT ● high
35.39.0.0/19 Grand Valley State University ARIN ASSIGNMENT ● high
35.39.32.0/19 Grand Valley State University ARIN ASSIGNMENT ● high
35.39.64.0/19 Grand Valley State University ARIN ASSIGNMENT ● high
35.39.128.0/19 Grand Valley State University ARIN ASSIGNMENT ● high
35.39.160.0/19 Grand Valley State University ARIN ASSIGNMENT ● high
35.39.192.0/19 Grand Valley State University ARIN ASSIGNMENT ● high
35.39.224.0/19 Grand Valley State University ARIN ASSIGNMENT ● high
35.40.0.0/16 Grand Valley State University ARIN ASSIGNMENT ● high
148.61.0.0/16 Grand Valley State University ARIN DIRECT ALLOCATION ● high
207.72.160.0/19 Grand Valley State University ARIN ASSIGNMENT ● high
2605:7dc0::/32 Grand Valley State University ARIN DIRECT ALLOCATION ● high

IPv6 ranges (1)

CIDR
2605:7dc0::/32

Network trust

what's this?
RPKI hygiene: B how networks compare →
83.3% of checked blocks have valid RPKI ROA coverage (10 of 12)
Possible discrepancies (10)

These blocks are registered to Grand Valley State University 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.

35.40.0.0/16 /16 authorized for AS237 — Merit Network Inc.
35.38.0.0/16 /16 authorized for AS237 — Merit Network Inc.
35.39.128.0/19 /19 authorized for AS237 — Merit Network Inc.
35.39.0.0/19 /19 authorized for AS237 — Merit Network Inc.
35.39.64.0/19 /19 authorized for AS237 — Merit Network Inc.
207.72.160.0/19 /19 authorized for AS237 — Merit Network Inc.
35.39.160.0/19 /19 authorized for AS237 — Merit Network Inc.
35.39.192.0/19 /19 authorized for AS237 — Merit Network Inc.
35.39.224.0/19 /19 authorized for AS237 — Merit Network Inc.
35.39.32.0/19 /19 authorized for AS237 — Merit Network Inc.

NIC Handles

GDT6-ARIN GDT6-ARIN GDT6-ARIN GDT6-ARIN GVSU GVSU GVSU-Z GVSUA-ARIN GVSUA-ARIN