Professional Software Design Ltd

Data as of 2026-07-26
BGP inherited
Cluster stats
Netblocks12 · 1,560 IPv4 addresses
IPv6 1 prefix (largest 2a05:ab00::/29)
All fragments 15 blocks across 2 clusters
Cluster ID213442665
RegistryBGP
Customersfind customers using this network →
Evidence & provenance ?
Attribution BGP parent (inherited)
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 · report an issue

Footprint over time

6 weekly snapshots · JSON
14 0 netblocks since 2026-07-05
2026-07-05 peak 14 2026-07-26

IP Ranges (12)

⬇ export CSV
CIDR Org name Registry Status Confidence
185.85.56.0/24 Professional Software Design Ltd BGP ANNOUNCED ● high
185.85.56.0/22 Professional Software Design Ltd BGP ANNOUNCED ● high
185.85.57.0/24 Professional Software Design Ltd BGP ANNOUNCED ● high
185.85.58.0/24 Professional Software Design Ltd BGP ANNOUNCED ● high
185.85.59.0/24 Professional Software Design Ltd BGP ANNOUNCED ● high
217.179.74.0/24 Professional Software Design Ltd BGP ANNOUNCED ● high
217.179.74.0/23 Professional Software Design Ltd BGP ANNOUNCED ● high
217.179.75.0/24 Professional Software Design Ltd BGP ANNOUNCED ● high
62.30.85.160/29 PROFESSIONAL-SOFTWARE-DESIGN-LTD RIPE ASSIGNED PA ● low
62.30.97.144/29 PROFESSIONAL-SOFTWARE-DESIGN-LTD RIPE ASSIGNED PA ● low
62.30.189.120/29 PROFESSIONAL-SOFTWARE-DESIGN-LTD RIPE ASSIGNED PA ● low
2a05:ab00::/29 Professional Software Design Ltd RIPE ALLOCATED-BY-RIR ● low

IPv6 ranges (1)

CIDR
2a05:ab00::/29

Network trust

what's this?
RPKI hygiene: B how networks compare →
92.9% of checked blocks have valid RPKI ROA coverage (13 of 14)
No discrepancies found among checked blocks.

NIC Handles

AS206626 AS5089-MNT DUMY-RIPE DUMY-RIPE ORG-PSDL1-RIPE PSDGroup-MNT PSDGroup-MNT RIPE-NCC-HM-MNT