Williams College

BGP inherited
Cluster stats
Netblocks12 · 131,324 IPv4 addresses
Cluster ID204468703
RegistryBGP
Customersfind customers using this network →
Evidence & provenance ?
Attribution BGP parent (inherited)
Shared handles clustered on 9 shared RIR contact/maintainer handles
Registry names 3 distinct registrant names across these blocks
full provenance (JSON) → · how attribution works

Footprint over time

5 weekly snapshots · JSON
12 0 netblocks since 2026-07-05
2026-07-05 peak 12 2026-07-19

IP Ranges (12)

⬇ export CSV
CIDR Org name Registry Status Confidence
137.165.0.0/16 Williams College ARIN DIRECT ALLOCATION ● high
137.165.0.0/17 Williams College BGP ANNOUNCED ● high
137.165.128.0/17 Williams College BGP ANNOUNCED ● high
204.225.173.0/24 Williams College BGP ANNOUNCED ● high
206.53.143.20/32 Williams College PEERINGDB ASSIGNED ● high
206.82.104.161/32 Williams College PEERINGDB ASSIGNED ● high
2001:470:ed::/48 Williams College BGP ANNOUNCED ● high
2001:504:36:0:1:8783:0:1/128 Williams College PEERINGDB ASSIGNED ● high
2001:504:47::2c87:0:1/128 Williams College PEERINGDB ASSIGNED ● high
2602:811:3000::/44 Williams College BGP ANNOUNCED ● high
2606:6b40:fff1::/48 Williams College BGP ANNOUNCED ● high
2606:6b40:fff2::/48 Williams College BGP ANNOUNCED ● high

Possibly related to this organisation

what's this?
Sub-allocations under carriers
IP blocks an ISP reassigned to a similarly-named customer — decoded from the ISP's own naming convention, not a direct registration.

Network trust

what's this?
RPKI hygiene: C how networks compare →
75.0% of checked blocks have valid RPKI ROA coverage (9 of 12)
No discrepancies found among checked blocks.

NIC Handles

AS11399 AS11399 NETWO8124-ARIN NETWO8124-ARIN NETWO8124-ARIN NETWO8124-ARIN NETWO8124-ARIN NETWO8124-ARIN WCC-6-Z