IBM-UK

Data as of 2026-09-20
BGP inherited
This organisation
Netblocks98 · 6,180 IPv4 addresses
IPv6 6 prefixes (largest 2a00:2381:3c90::/48)
Registered in United Kingdom (90) · Netherlands (2)
Also registered under this name 102 netblocks across 4 separate records
Record ID241413457
RegistryRIPE
Customerssee who runs inside this network →
Evidence & provenance ?
Attribution BGP parent (inherited)
Shared handles clustered on 8 shared RIR contact/maintainer handles
Registry names 4 distinct registrant names across these blocks
full provenance (JSON) → · how attribution works · report an issue

IP Ranges (98)

⬇ export CSV
CIDR Org name Registry Status Confidence
62.216.233.208/28 IBM_UK_LTD RIPE ASSIGNED PA ● low
62.216.236.160/27 IBM_UK_LTD RIPE ASSIGNED PA ● low
62.253.198.192/28 IBM-UK RIPE ASSIGNED PA ● low
62.253.198.208/28 IBM-UK RIPE ASSIGNED PA ● low
62.253.198.224/28 IBM-UK RIPE ASSIGNED PA ● low
62.253.202.160/28 IBM-UK RIPE ASSIGNED PA ● low
62.253.202.176/28 IBM-UK RIPE ASSIGNED PA ● low
62.253.202.192/28 IBM-UK RIPE ASSIGNED PA ● low
62.253.202.208/28 IBM-UK RIPE ASSIGNED PA ● low
62.253.203.216/30 IBM-UK-Ltd RIPE ASSIGNED PA ● low
62.253.212.72/30 IBM-UK RIPE ASSIGNED PA ● low
62.253.216.128/28 IBM-UK RIPE ASSIGNED PA ● low
62.253.216.144/28 IBM-UK RIPE ASSIGNED PA ● low
62.253.216.160/28 IBM-UK RIPE ASSIGNED PA ● low
62.253.216.176/28 IBM-UK RIPE ASSIGNED PA ● low
62.254.168.192/30 IBM-UK RIPE ASSIGNED PA ● low
62.254.171.32/28 IBM-UK RIPE ASSIGNED PA ● low
62.255.165.124/30 IBM-UK RIPE ASSIGNED PA ● low
80.0.92.0/22 IBM-UK RIPE ASSIGNED PA ● low
80.0.204.0/22 IBM-UK RIPE ASSIGNED PA ● low
80.0.220.0/22 IBM-UK RIPE ASSIGNED PA ● low
80.1.64.20/30 IBM-UK RIPE ASSIGNED PA ● low
80.1.64.192/28 IBM-UK RIPE ASSIGNED PA ● low
80.1.204.0/22 IBM-UK RIPE ASSIGNED PA ● low
80.2.101.144/29 IBM-UK-Ltd RIPE ASSIGNED PA ● low
80.194.96.148/30 IBM-UK-LTD RIPE ASSIGNED PA ● low
80.194.100.240/28 IBM-UK-LTD RIPE ASSIGNED PA ● low
81.98.214.48/28 IBM-UK RIPE ASSIGNED PA ● low
81.98.214.64/28 IBM-UK RIPE ASSIGNED PA ● low
81.98.214.80/28 IBM-UK RIPE ASSIGNED PA ● low
81.98.214.96/28 IBM-UK RIPE ASSIGNED PA ● low
81.98.214.112/28 IBM-UK RIPE ASSIGNED PA ● low
81.98.214.128/28 IBM-UK RIPE ASSIGNED PA ● low
81.98.214.144/28 IBM-UK RIPE ASSIGNED PA ● low
81.98.214.160/28 IBM-UK RIPE ASSIGNED PA ● low
81.98.214.176/28 IBM-UK RIPE ASSIGNED PA ● low
81.98.214.208/28 IBM-UK RIPE ASSIGNED PA ● low
81.98.214.224/28 IBM-UK RIPE ASSIGNED PA ● low
81.98.214.240/28 IBM-UK RIPE ASSIGNED PA ● low
81.98.215.32/28 IBM-UK RIPE ASSIGNED PA ● low
81.98.215.48/28 IBM-UK RIPE ASSIGNED PA ● low
81.98.215.64/28 IBM-UK RIPE ASSIGNED PA ● low
81.98.215.80/28 IBM-UK RIPE ASSIGNED PA ● low
81.98.215.96/28 IBM-UK RIPE ASSIGNED PA ● low
81.98.215.112/28 IBM-UK RIPE ASSIGNED PA ● low
81.98.215.128/28 IBM-UK RIPE ASSIGNED PA ● low
81.98.215.144/28 IBM-UK RIPE ASSIGNED PA ● low
81.98.215.160/28 IBM-UK RIPE ASSIGNED PA ● low
81.98.215.176/28 IBM-UK RIPE ASSIGNED PA ● low
81.98.215.192/28 IBM-UK RIPE ASSIGNED PA ● low
81.98.215.208/28 IBM-UK RIPE ASSIGNED PA ● low
81.98.215.224/28 IBM-UK RIPE ASSIGNED PA ● low
81.98.215.240/28 IBM-UK RIPE ASSIGNED PA ● low
81.101.84.64/28 IBM-UK RIPE ASSIGNED PA ● low
81.101.84.80/28 IBM-UK RIPE ASSIGNED PA ● low
81.101.84.96/28 IBM-UK RIPE ASSIGNED PA ● low
81.101.84.200/30 IBM-UK RIPE ASSIGNED PA ● low
81.105.183.0/28 IBM-UK RIPE ASSIGNED PA ● low
81.105.183.16/28 IBM-UK RIPE ASSIGNED PA ● low
81.105.183.32/28 IBM-UK RIPE ASSIGNED PA ● low
81.105.183.48/28 IBM-UK RIPE ASSIGNED PA ● low
81.105.183.64/28 IBM-UK RIPE ASSIGNED PA ● low
81.105.183.80/28 IBM-UK RIPE ASSIGNED PA ● low
81.105.183.96/28 IBM-UK RIPE ASSIGNED PA ● low
81.105.183.112/28 IBM-UK RIPE ASSIGNED PA ● low
81.105.183.128/28 IBM-UK RIPE ASSIGNED PA ● low
81.105.183.144/28 IBM-UK RIPE ASSIGNED PA ● low
81.110.140.0/23 IBM-UK RIPE ASSIGNED PA ● low
82.1.185.96/27 IBM-UK RIPE ASSIGNED PA ● low
82.1.185.128/30 IBM-UK RIPE ASSIGNED PA ● low
82.16.17.0/28 IBM-UK RIPE ASSIGNED PA ● low
82.16.17.16/28 IBM-UK RIPE ASSIGNED PA ● low
82.16.26.36/30 IBM-UK-Ltd RIPE ASSIGNED PA ● low
82.20.65.128/27 IBM-UK-LTD RIPE ASSIGNED PA ● low
86.188.191.192/28 IBM-UK RIPE ASSIGNED PA ● low
86.188.218.8/29 IBM-UK RIPE ASSIGNED PA ● low
89.187.96.88/30 IBM-UK-LTD RIPE ASSIGNED PA ● low
193.240.85.80/28 IBM-UK RIPE ASSIGNED PA ● low
193.240.85.112/28 IBM-UK RIPE ASSIGNED PA ● low
194.168.122.0/24 IBM-UK-LTD RIPE ASSIGNED PA ● low
194.168.205.192/27 IBM-UK-LTD RIPE ASSIGNED PA ● low
212.250.46.96/27 IBM-UK-LTD RIPE ASSIGNED PA ● low
213.1.220.224/29 IBM-UK RIPE ASSIGNED PA ● low
213.105.192.128/26 IBM-UK RIPE ASSIGNED PA ● low
213.105.192.240/30 IBM-UK RIPE ASSIGNED PA ● low
213.106.240.128/28 IBM-UK RIPE ASSIGNED PA ● low
213.106.240.176/28 IBM-UK RIPE ASSIGNED PA ● low
213.106.241.152/30 IBM-UK RIPE ASSIGNED PA ● low
213.106.241.156/30 IBM-UK RIPE ASSIGNED PA ● low
213.106.241.192/28 IBM-UK RIPE ASSIGNED PA ● low
213.106.241.208/28 IBM-UK RIPE ASSIGNED PA ● low
217.38.21.96/29 IBM-UK RIPE ASSIGNED PA ● low
2a00:2381:3c90::/48 IBM-UK RIPE AGGREGATED-BY-LIR ● low
2a00:2381:3c90::/56 IBM-UK RIPE ASSIGNED ● low
2a00:2381:ee55::/48 IBM-UK RIPE AGGREGATED-BY-LIR ● low
2a00:2381:ee55::/56 IBM-UK RIPE ASSIGNED ● low
2a00:2381:ee55:100::/56 IBM-UK RIPE ASSIGNED ● low
2a00:2381:f1bf::/48 IBM-UK RIPE AGGREGATED-BY-LIR ● low

IPv6 ranges (6)

CIDR
2a00:2381:3c90::/48
2a00:2381:ee55::/48
2a00:2381:f1bf::/48
2a00:2381:3c90::/56
2a00:2381:ee55:100::/56
2a00:2381:ee55::/56

Footprint over time

8 weekly snapshots · JSON
98 0 netblocks since 2026-07-26
2026-07-26 peak 98 2026-09-20

Network trust

what's this?
RPKI hygiene: A how networks compare →
98.0% of checked blocks have valid RPKI ROA coverage (96 of 98)
Possible discrepancies (12)

These blocks are registered to IBM-UK but cryptographically authorized for a different, unrelated network (2 distinct holders) — often M&A history, multi-homing, or outsourced/managed hosting, occasionally worth a closer look.

2a00:2381:f1bf::/48 /48 authorized for AS2856 — British Telecommunications Limited
2a00:2381:ee55::/48 /48 authorized for AS2856 — British Telecommunications Limited
2a00:2381:3c90::/48 /48 authorized for AS2856 — British Telecommunications Limited
2a00:2381:ee55::/56 /56 authorized for AS2856 — British Telecommunications Limited
2a00:2381:ee55:100::/56 /56 authorized for AS2856 — British Telecommunications Limited
2a00:2381:3c90::/56 /56 authorized for AS2856 — British Telecommunications Limited
80.1.204.0/22 /22 authorized for AS5089 — Virgin Media Limited
80.0.92.0/22 /22 authorized for AS5089 — Virgin Media Limited
80.0.204.0/22 /22 authorized for AS5089 — Virgin Media Limited
80.0.220.0/22 /22 authorized for AS5089 — Virgin Media Limited
81.110.140.0/23 /23 authorized for AS5089 — Virgin Media Limited
194.168.122.0/24 /24 authorized for AS5089 — Virgin Media Limited

NIC Handles

AS5089-MNT AS5462-MNT BTNET-MNT DUMY-RIPE DUMY-RIPE EQUINIX-MNT HRW-NOC QUZAUK