SUM
BGP inherited
Cluster stats
| Netblocks | 10 · 9,486 IPv4 addresses |
| Registered in | Poland (8) · China (1) · Russia (1) |
| All fragments | 16 blocks across 5 clusters |
| Cluster ID | 209151063 |
| Registry | APNIC |
| Customers | find 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 | |
Footprint over time
5 weekly snapshots · JSON
10
0 netblocks since 2026-07-05
2026-07-05
peak 10
2026-07-19
IP Ranges (10)
⬇ export CSV| CIDR | Org name | Registry | Status | Confidence |
|---|---|---|---|---|
| 83.230.64.0/21 | SUM | RIPE | ASSIGNED PA | ● high |
| 83.230.96.16/28 | SUM | RIPE | ASSIGNED PA | ● high |
| 83.230.127.24/29 | SUM | RIPE | ASSIGNED PA | ● high |
| 213.227.96.0 – 213.227.96.95 | SUM | RIPE | ASSIGNED PA | ● high |
| 213.227.96.112 – 213.227.102.255 | SUM | RIPE | ASSIGNED PA | ● high |
| 213.227.104.0/22 | SUM | RIPE | ASSIGNED PA | ● high |
| 213.227.109.0 – 213.227.110.255 | SUM | RIPE | ASSIGNED PA | ● high |
| 213.227.112.0/20 | SUM | RIPE | ASSIGNED PA | ● high |
| 222.66.59.160/29 | SUM-CO | APNIC | ASSIGNED NON-PORTABLE | ● high |
| 80.82.53.152/29 | SUM-NET | RIPE | ASSIGNED PA | ● low |
Possibly related to this organisation
what's this?Same name family
Separately-registered clusters whose names share “SUM” — often
per-country or per-system registrations of the same brand, occasionally a different
organisation sharing the name. Not counted in this organisation's own footprint.
- SUM-HOGAR-HOTEL 3 blocks
- Sum Of Squares 1 blocks
- SUM-DENT-ANTON 1 blocks
- SUM-NOL 1 blocks
Network trust
what's this?
RPKI hygiene: A
how networks compare →
100.0%
of checked blocks have valid RPKI ROA coverage
(10 of 10)
Possible discrepancies (5)
These blocks are registered to SUM 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.
| 213.227.112.0/20 /20 | authorized for AS8508 — Silesian University of Technology, Computer Centre |
| 83.230.64.0/21 /21 | authorized for AS8508 — Silesian University of Technology, Computer Centre |
| 213.227.96.112 – 213.227.102.255 /21 | authorized for AS8508 — Silesian University of Technology, Computer Centre |
| 213.227.104.0/22 /22 | authorized for AS8508 — Silesian University of Technology, Computer Centre |
| 213.227.109.0 – 213.227.110.255 /23 | authorized for AS8508 — Silesian University of Technology, Computer Centre |
NIC Handles
DUMY-RIPE
DUMY-RIPE
LAY3-AP
LAY3-AP
MAINT-CHINANET-SH
PL-CKPOLSL-MNT
ROSTELECOM-MNT
SUM-RIPE