City of Boston

Data as of 2026-07-26
BGP inherited
Cluster stats
Netblocks16 · 70,145 IPv4 addresses
IPv6 1 prefix (largest 2001:504:47::6aea:0:1/128)
All fragments 1,358 blocks across 391 clusters
Cluster ID214405404
RegistryBGP
Customersfind customers using this network →
Evidence & provenance ?
Attribution BGP parent (inherited)
Shared handles clustered on 10 shared RIR contact/maintainer handles
Registry names 3 distinct registrant names across these blocks
full provenance (JSON) → · how attribution works · report an issue

Footprint over time

6 weekly snapshots · JSON
17 +1 netblocks since 2026-07-05
2026-07-05 peak 17 2026-07-26

IP Ranges (16)

⬇ export CSV
CIDR Org name Registry Status Confidence
140.241.0.0/16 City of Boston ARIN ASSIGNMENT ● high
140.241.3.0/24 City of Boston BGP ANNOUNCED ● high
140.241.14.0/24 City of Boston BGP ANNOUNCED ● high
140.241.25.0/24 City of Boston BGP ANNOUNCED ● high
140.241.86.0/24 City of Boston BGP ANNOUNCED ● high
140.241.244.0/24 City of Boston BGP ANNOUNCED ● high
140.241.250.0/24 City of Boston BGP ANNOUNCED ● high
192.80.65.0/24 City of Boston BGP ANNOUNCED ● high
204.167.88.0/24 City of Boston BGP ANNOUNCED ● high
206.53.143.73/32 City of Boston PEERINGDB ASSIGNED ● high
216.163.208.0/20 City of Boston BGP ANNOUNCED ● high
216.163.208.0/21 City of Boston BGP ANNOUNCED ● high
216.163.216.0/21 City of Boston BGP ANNOUNCED ● high
216.163.216.0/22 City of Boston BGP ANNOUNCED ● high
216.163.220.0/22 City of Boston BGP ANNOUNCED ● high
2001:504:47::6aea:0:1/128 City of Boston PEERINGDB ASSIGNED ● high

IPv6 ranges (1)

CIDR
2001:504:47::6aea:0:1/128

Network trust

what's this?
RPKI hygiene: B how networks compare →
82.4% of checked blocks have valid RPKI ROA coverage (14 of 17)
No discrepancies found among checked blocks.

NIC Handles

AS27370 AS27370 CITYOF-198 HOSTM1518-ARIN HOSTM1518-ARIN NOC11232-ARIN NOC11232-ARIN NOC11232-ARIN NOC11232-ARIN NOC11232-ARIN