Nucleo AB
Núcleo S.A.
Data as of 2026-08-30
GLEIF verified
Complete entity footprint
2 linked clusters ·
22 netblocks ·
37,136 IPv4 addresses
This organisation's clusters combined by evidence —
shared GLEIF corporate family
— not name similarity, so genuinely different organisations that share a name are excluded.
LEI
6367005X5BDDN04HBN79
Registered name
Nucleo AB
Jurisdiction
Ultimate parent
No parent on file in GLEIF
Cluster stats
| Netblocks | 21 · 37,120 IPv4 addresses |
| All fragments | 23 blocks across 2 clusters |
| Cluster ID | 232900350 |
| Registry | ARIN |
| Owner jurisdiction | SE |
| Customers | find customers using this network → |
Evidence & provenance ?
| Attribution | GLEIF legal-entity match |
| Legal identity | LEI 6367005X5BDDN04HBN79 |
| Shared handles | clustered on 8 shared RIR contact/maintainer handles |
| Registry names | 2 distinct registrant names across these blocks |
| full provenance (JSON) → · how attribution works · report an issue | |
Footprint over time
7 weekly snapshots · JSON
21
-99 netblocks since 2026-07-05
2026-07-05
peak 120
2026-08-30
IP Ranges (21)
⬇ export CSV| CIDR | Org name | Registry | Status | Confidence |
|---|---|---|---|---|
| 181.1.152.0/22 | Núcleo S.A. | LACNIC | ALLOCATED | ● low |
| 181.85.208.0/22 | Núcleo S.A. | LACNIC | ALLOCATED | ● low |
| 181.85.212.0/22 | Núcleo S.A. | LACNIC | ALLOCATED | ● low |
| 181.91.84.0/22 | Núcleo S.A. | ARIN | ALLOCATED | ● low |
| 181.94.197.0/24 | Núcleo S.A. | ARIN | ALLOCATED | ● low |
| 181.94.208.0/23 | Núcleo S.A. | ARIN | ALLOCATED | ● low |
| 181.94.210.0/24 | Núcleo S.A. | ARIN | ALLOCATED | ● low |
| 181.94.212.0/22 | Núcleo S.A. | LACNIC | ALLOCATED | ● low |
| 181.94.216.0/21 | Núcleo S.A. | LACNIC | ALLOCATED | ● low |
| 181.94.224.0/21 | Núcleo S.A. | LACNIC | ALLOCATED | ● low |
| 181.94.232.0/22 | Núcleo S.A. | LACNIC | ALLOCATED | ● low |
| 181.94.236.0/23 | Núcleo S.A. | ARIN | ALLOCATED | ● low |
| 181.94.238.0/24 | Núcleo S.A. | ARIN | ALLOCATED | ● low |
| 181.94.241.0/24 | Núcleo S.A. | ARIN | ALLOCATED | ● low |
| 181.94.242.0/23 | Núcleo S.A. | ARIN | ALLOCATED | ● low |
| 181.94.244.0/22 | Núcleo S.A. | LACNIC | ALLOCATED | ● low |
| 181.94.248.0/23 | Núcleo S.A. | ARIN | ALLOCATED | ● low |
| 181.94.250.0/24 | Núcleo S.A. | ARIN | ALLOCATED | ● low |
| 181.103.0.0/20 | Núcleo S.A. | LACNIC | ALLOCATED | ● low |
| 190.104.128.0/18 | Núcleo S.A. | LACNIC | ALLOCATED | ● low |
| 200.3.248.0/21 | Núcleo S.A. | LACNIC | ALLOCATED | ● low |
Corporate group (2 confirmed entities)
- nucleo 1 blocks
Network trust
what's this?
RPKI hygiene: A
how networks compare →
100.0%
of checked blocks have valid RPKI ROA coverage
(21 of 21)
Possible discrepancies (21)
These blocks are registered to Núcleo 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.
| 190.104.128.0/18 /18 | authorized for AS27895 — AS27895 |
| 181.103.0.0/20 /20 | authorized for AS27895 — AS27895 |
| 181.94.216.0/21 /21 | authorized for AS27895 — AS27895 |
| 200.3.248.0/21 /21 | authorized for AS27895 — AS27895 |
| 181.94.224.0/21 /21 | authorized for AS27895 — AS27895 |
| 181.85.208.0/22 /22 | authorized for AS27895 — AS27895 |
| 181.85.212.0/22 /22 | authorized for AS27895 — AS27895 |
| 181.94.212.0/22 /22 | authorized for AS27895 — AS27895 |
| 181.94.232.0/22 /22 | authorized for AS27895 — AS27895 |
| 181.94.244.0/22 /22 | authorized for AS27895 — AS27895 |
| 181.1.152.0/22 /22 | authorized for AS27895 — AS27895 |
| 181.91.84.0/22 /22 | authorized for AS27895 — AS27895 |
| 181.94.248.0/23 /23 | authorized for AS27895 — AS27895 |
| 181.94.242.0/23 /23 | authorized for AS27895 — AS27895 |
| 181.94.236.0/23 /23 | authorized for AS27895 — AS27895 |
+6 more — see the REST API
NIC Handles
PY-NUSA-LACNIC
PY-NUSA-LACNIC
SES52
SES52
SES52
SES52
SES52
SES52