Suffolk County Government

Data as of 2026-07-26
BGP inherited
Cluster stats
Netblocks11 · 2,432 IPv4 addresses
IPv6 2 prefixes (largest 2a00:2381:fd78::/48)
Registered in United States (8) · United Kingdom (1)
All fragments 13 blocks across 3 clusters
Cluster ID214443829
RegistryBGP
Customersfind customers using this network →
Evidence & provenance ?
Attribution BGP parent (inherited)
Shared handles clustered on 14 shared RIR contact/maintainer handles
Registry names 6 distinct registrant names across these blocks
full provenance (JSON) → · how attribution works · report an issue

Footprint over time

6 weekly snapshots · JSON
11 +1 netblocks since 2026-07-05
2026-07-05 peak 11 2026-07-26

IP Ranges (11)

⬇ export CSV
CIDR Org name Registry Status Confidence
198.72.8.0/24 Suffolk County Community College ARIN ASSIGNMENT ● high
204.17.249.0/24 Suffolk County Water Authority BGP ANNOUNCED ● high
204.17.250.0/23 Suffolk County Water Authority BGP ANNOUNCED ● high
204.126.171.0/24 Suffolk County Government BGP ANNOUNCED ● high
204.126.240.0/23 Suffolk County Government BGP ANNOUNCED ● high
204.126.240.0/24 Suffolk County Government BGP ANNOUNCED ● high
204.126.241.0/24 Suffolk County Government BGP ANNOUNCED ● high
81.144.199.128/25 SUFFOLK-COUNTY-COUNCIL RIPE ASSIGNED PA ● low
204.17.249.0 – 204.17.253.255 Suffolk County Water Authority ARIN DIRECT ALLOCATION ● low
2a00:2381:fd78::/48 SUFFOLK-COUNTY-COUNCIL RIPE AGGREGATED-BY-LIR ● low
2a00:2381:fd78:100::/56 SUFFOLK-COUNTY RIPE ASSIGNED ● low

IPv6 ranges (2)

CIDR
2a00:2381:fd78::/48
2a00:2381:fd78:100::/56

Network trust

what's this?
RPKI hygiene: D how networks compare →
45.5% of checked blocks have valid RPKI ROA coverage (5 of 11)
Possible discrepancies (2)

These blocks are registered to Suffolk County Government 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.

2a00:2381:fd78::/48 /48 authorized for AS2856 — British Telecommunications Limited
2a00:2381:fd78:100::/56 /56 authorized for AS2856 — British Telecommunications Limited

NIC Handles

AS397417 AS40042 BTNET-MNT DUMY-RIPE DUMY-RIPE GANNO235-ARIN GANNO235-ARIN NOC1591-ARIN SCC-3 SCWA SCWAN-ARIN SCWAN-ARIN +2 more