SEI INVESTMENTS COMPANY
SEI Investments
GLEIF verified
LEI
5LJTIFADGZ6XH1RVOC11
Registered name
SEI INVESTMENTS COMPANY
Jurisdiction
Ultimate parent
No parent on file in GLEIF
Cluster stats
| Netblocks | 18 |
| All fragments | 38 blocks across 8 clusters |
| Cluster ID | 191658152 |
| Registry | APNIC |
| Owner jurisdiction | US-PA |
| Customers | find customers using this network → |
Evidence & provenance ?
| Attribution | GLEIF legal-entity match |
| Legal identity | LEI 5LJTIFADGZ6XH1RVOC11 |
| Shared handles | clustered on 19 shared RIR contact/maintainer handles |
| Registry names | 8 distinct registrant names across these blocks |
| full provenance (JSON) → · how attribution works | |
Footprint over time
3 weekly snapshots · JSON
18
0 netblocks since 2026-07-05
2026-07-05
peak 18
2026-07-12
IP Ranges (18)
⬇ export CSV| CIDR | Org name | Registry | Status | Confidence |
|---|---|---|---|---|
| 12.20.48.0/24 | SEI Investments | BGP | ANNOUNCED | ● high |
| 12.20.49.0/24 | SEI Investments | BGP | ANNOUNCED | ● high |
| 12.31.24.0/24 | SEI Investments | BGP | ANNOUNCED | ● high |
| 63.76.137.0/24 | SEI Investments | BGP | ANNOUNCED | ● high |
| 64.125.66.0/24 | SEI Investments | BGP | ANNOUNCED | ● high |
| 170.76.224.0/24 | SEI Investments | BGP | ANNOUNCED | ● high |
| 170.76.225.0/24 | SEI Investments | BGP | ANNOUNCED | ● high |
| 192.5.241.0/24 | SEI Investments Developments, INC | BGP | ANNOUNCED | ● high |
| 206.220.236.0/24 | SEI Investments | BGP | ANNOUNCED | ● high |
| 206.220.236.0/22 | SEI Investments | ARIN | ● high | |
| 206.220.237.0/24 | SEI Investments | BGP | ANNOUNCED | ● high |
| 206.220.238.0/24 | SEI Investments | BGP | ANNOUNCED | ● high |
| 206.220.239.0/24 | SEI Investments | BGP | ANNOUNCED | ● high |
| 42.61.102.104/29 | SEI-WOO-SG | APNIC | ALLOCATED NON-PORTABLE | ● low |
| 62.77.202.216/29 | SEI-HU | RIPE | ASSIGNED PA | ● low |
| 82.103.110.0/23 | SEI-BG | RIPE | ASSIGNED PA | ● low |
| 103.81.176.0/22 | SEI-TOU | APNIC | ALLOCATED PORTABLE | ● low |
| 194.72.14.20/30 | SEI-UK | RIPE | ASSIGNED PA | ● low |
Network trust
what's this?
RPKI hygiene: D
how networks compare →
27.8%
of checked blocks have valid RPKI ROA coverage
(5 of 18)
Possible discrepancies (1)
These blocks are registered to SEI Investments 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.
| 82.103.110.0/23 /23 | authorized for AS8717 — A1 Bulgaria EAD |
NIC Handles
AS12301-MNT
AS14056
AS17276
AS2068-AP
AS29797
BTNET-MNT
DUMY-RIPE
DUMY-RIPE
JNIC1-AP
JNIC1-AP
KS11-ARIN
KS11-ARIN
+7 more