MASTER S.P.A.

MASTER S/A
Data as of 2026-07-26
GLEIF verified
Complete entity footprint
2 linked clusters · 463 netblocks · 213,595 IPv4 addresses · 27 IPv6 prefixes
This organisation's clusters combined by evidence — shared operating domain mastercabo.com.br — not name similarity, so genuinely different organisations that share a name are excluded.
View the full entity page →
LEI
815600AB0065D92CD838
Registered name
MASTER S.P.A.
Jurisdiction
IT
Ultimate parent
No parent on file in GLEIF
Cluster stats
Netblocks52 · 197,211 IPv4 addresses
IPv6 14 prefixes (largest 2001:df5:4680::/48)
Registered in Brazil (9) · Russia (9) · Italy (4) · KZ (3) · Czechia (2) · Greece (2)
Cluster ID213577912
RegistryAFRINIC
Owner jurisdictionIT
Customersfind customers using this network →
Evidence & provenance ?
Attribution GLEIF legal-entity match
Legal identityLEI 815600AB0065D92CD838
Shared handles clustered on 38 shared RIR contact/maintainer handles
Registry names 22 distinct registrant names across these blocks
full provenance (JSON) → · how attribution works · report an issue

Footprint over time

4 weekly snapshots · JSON
53 -593 netblocks since 2026-07-05
2026-07-05 peak 646 2026-07-26

IP Ranges (52)

showing 50 of 52 — see all — ⬇ export CSV
CIDR Org name Registry Status Confidence
51.195.146.220/30 Master Web RIPE LEGACY ● high
103.145.74.0/24 Master Net BGP ANNOUNCED ● high
198.244.180.104/29 Master Web RIPE LEGACY ● high
61.92.163.2/32 MASTER APNIC ASSIGNED NON-PORTABLE ● low
62.118.224.0/25 MASTER-LAN RIPE ASSIGNED PA ● low
77.93.192.0/28 MASTER-AS4-CZ-MAI RIPE ASSIGNED PA ● low
79.134.196.72/30 MASTER-LAN RIPE ASSIGNED PA ● low
79.134.213.56/30 MASTER-LAN RIPE ASSIGNED PA ● low
80.79.16.0/28 MASTER-AS2 RIPE ASSIGNED PA ● low
80.253.20.200 – 80.253.20.223 MASTER-NET RIPE ASSIGNED PA ● low
81.115.207.56/30 MASTER-S-P-A RIPE ASSIGNED PA ● low
81.117.148.16/29 MASTER RIPE ASSIGNED PA ● low
82.129.182.48/28 Master-Net AFRINIC ASSIGNED PA ● low
82.200.174.112/29 MASTER RIPE ASSIGNED PA ● low
84.204.103.20/30 MASTER-IT-LAN RIPE ASSIGNED PA ● low
84.204.230.20/30 MASTER-AY-TI-LAN RIPE ASSIGNED PA ● low
87.202.198.128/28 MASTER RIPE ASSIGNED PA ● low
89.140.89.104/29 MASTER-D RIPE ASSIGNED PA ● low
89.218.20.156/30 MASTER_KIP RIPE ASSIGNED PA ● low
93.87.69.94/31 MASTER_BUS RIPE ASSIGNED PA ● low
95.56.226.120/29 MASTER RIPE ASSIGNED PA ● low
177.44.0.0/17 MASTER S/A ARIN ALLOCATED ● low
177.130.128.0/19 MASTER S/A ARIN ALLOCATED ● low
177.130.160.0/19 MASTER S/A ARIN ALLOCATED ● low
179.189.160.0/19 MASTER S/A ARIN ALLOCATED ● low
186.216.64.0/18 MASTER S/A ARIN ALLOCATED ● low
187.44.0.0/18 MASTER S/A ARIN ALLOCATED ● low
188.128.94.164/30 Master RIPE ASSIGNED PA ● low
189.91.0.0/19 MASTER S/A ARIN ALLOCATED ● low
191.53.0.0/16 MASTER S/A ARIN ALLOCATED ● low
191.240.0.0/17 MASTER S/A ARIN ALLOCATED ● low
212.48.138.200/29 MASTER-NET RIPE ASSIGNED PA ● low
213.8.70.96/30 Master RIPE ASSIGNED PA ● low
213.23.232.16/29 MASTER-NET RIPE ASSIGNED PA ● low
213.172.5.228/30 MASTER-AY-TI-LAN RIPE ASSIGNED PA ● low
213.249.54.176/29 master RIPE ASSIGNED PA ● low
217.222.23.240/28 MASTER-BIT RIPE ASSIGNED PA ● low
217.222.76.184/29 MASTER-SYS RIPE ASSIGNED PA ● low
2001:df5:4680::/48 Master Net APNIC ASSIGNED PORTABLE ● low
2a01:4f8:212:17d3::/64 MASTER-LUX RIPE ASSIGNED ● low
2a01:4f8:222:1e07::/64 MASTER-LUX RIPE ASSIGNED ● low
2a01:4f9:2a:314d::/64 MASTER-LUX RIPE ASSIGNED ● low
2a01:4f9:3a:22df::/64 MASTER-LUX RIPE ASSIGNED ● low
2a01:4f9:3a:4968::/64 MASTER-LUX RIPE ASSIGNED ● low
2a01:4f9:4a:3502::/64 MASTER-LUX RIPE ASSIGNED ● low
2a01:4f9:4a:3646::/64 MASTER-LUX RIPE ASSIGNED ● low
2a01:4f9:4a:51a8::/64 MASTER-LUX RIPE ASSIGNED ● low
2a01:4f9:6b:2386::/64 MASTER-LUX RIPE ASSIGNED ● low
2a01:4f9:3070:248b::/64 MASTER-LUX RIPE ASSIGNED ● low
2a01:4f9:3080:270a::/64 MASTER-LUX RIPE ASSIGNED ● low

IPv6 ranges (14)

CIDR
2001:df5:4680::/48
2a01:4f8:212:17d3::/64
2a01:4f8:222:1e07::/64
2a01:4f9:2a:314d::/64
2a01:4f9:3070:248b::/64
2a01:4f9:3080:270a::/64
2a01:4f9:3080:282f::/64
2a01:4f9:3100:25d2::/64
2a01:4f9:3a:22df::/64
2a01:4f9:3a:4968::/64
2a01:4f9:4a:3502::/64
2a01:4f9:4a:3646::/64
2a01:4f9:4a:51a8::/64
2a01:4f9:6b:2386::/64

Network trust

what's this?
RPKI hygiene: B how networks compare →
90.6% of checked blocks have valid RPKI ROA coverage (48 of 53)
Possible discrepancies (9)

These blocks are registered to MASTER S/A 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.

191.53.0.0/16 /16 authorized for AS28202 — AS28202
191.240.0.0/17 /17 authorized for AS28202 — AS28202
177.44.0.0/17 /17 authorized for AS28202 — AS28202
187.44.0.0/18 /18 authorized for AS28202 — AS28202
186.216.64.0/18 /18 authorized for AS28202 — AS28202
177.130.160.0/19 /19 authorized for AS28202 — AS28202
177.130.128.0/19 /19 authorized for AS28202 — AS28202
189.91.0.0/19 /19 authorized for AS28202 — AS28202
179.189.160.0/19 /19 authorized for AS28202 — AS28202

NIC Handles

01766744000184 AC2009-AP ADMAS5 ADMAS5 ADMAS5 AM2383-AP APNIC-HM ARCOR-MNT AS139806 AS5486-MNT CH134-AP CH134-AP +26 more