sipsynergy Ltd
Cluster stats
Netblocks19
All fragments 49 blocks across 2 clusters
Cluster ID191777685
RegistryBGP
Customersfind customers using this network →
Evidence & provenance ?
Attribution unresolved
Shared handles clustered on 8 shared RIR contact/maintainer handles
Registry names 3 distinct registrant names across these blocks
full provenance (JSON) → · how attribution works

Footprint over time

2 weekly snapshots · JSON
19 0 netblocks since 2026-07-05
2026-07-05 peak 19 2026-07-06

IP Ranges (19)

⬇ export CSV
CIDR Org name Registry Status Confidence
5.57.81.41/32 sipsynergy PEERINGDB ASSIGNED ● high
178.255.56.0/24 sipsynergy Ltd BGP ANNOUNCED ● high
178.255.57.0/24 sipsynergy Ltd BGP ANNOUNCED ● high
178.255.58.0/24 sipsynergy Ltd BGP ANNOUNCED ● high
178.255.59.0/24 sipsynergy Ltd BGP ANNOUNCED ● high
178.255.60.0/24 sipsynergy Ltd BGP ANNOUNCED ● high
178.255.61.0/24 sipsynergy Ltd BGP ANNOUNCED ● high
178.255.62.0/24 sipsynergy Ltd BGP ANNOUNCED ● high
178.255.63.0/24 sipsynergy Ltd BGP ANNOUNCED ● high
185.41.224.0/24 sipsynergy Ltd BGP ANNOUNCED ● high
185.41.225.0/24 sipsynergy Ltd BGP ANNOUNCED ● high
185.41.226.0/24 sipsynergy Ltd BGP ANNOUNCED ● high
185.41.227.0/24 sipsynergy Ltd BGP ANNOUNCED ● high
195.66.225.118/32 sipsynergy PEERINGDB ASSIGNED ● high
195.66.237.118/32 sipsynergy PEERINGDB ASSIGNED ● high
178.255.56.0/21 sipsynergy Ltd RIPE ALLOCATED PA ● medium
185.41.224.0/22 sipsynergy Ltd RIPE ALLOCATED PA ● medium
45.146.156.0/22 sipsynergy Ltd RIPE ALLOCATED PA ● low
2a01:5de0::/32 sipsynergy Ltd RIPE ALLOCATED-BY-RIR ● low

Network trust

what's this?
RPKI hygiene: B how networks compare →
89.5% of checked blocks have valid RPKI ROA coverage (17 of 19)
No discrepancies found among checked blocks.

NIC Handles

AS51409 AS51409 DUMY-RIPE DUMY-RIPE ORG-SL834-RIPE RIPE-NCC-HM-MNT mnt-uk-sipsynergy-1 mnt-uk-sipsynergy-1