Screwjack, LLC
Data as of 2026-08-16
BGP inherited
Cluster stats
| Netblocks | 8 · 256 IPv4 addresses |
| IPv6 | 7 prefixes (largest 2a0e:b107:1000::/44) |
| Cluster ID | 224332617 |
| Registry | ARIN |
| Customers | find customers using this network → |
Evidence & provenance ?
| Attribution | BGP parent (inherited) |
| Shared handles | clustered on 15 shared RIR contact/maintainer handles |
| Registry names | 3 distinct registrant names across these blocks |
| full provenance (JSON) → · how attribution works · report an issue | |
Footprint over time
8 weekly snapshots · JSON
8
+1 netblocks since 2026-07-05
2026-07-05
peak 8
2026-08-16
IP Ranges (8)
⬇ export CSV| CIDR | Org name | Registry | Status | Confidence |
|---|---|---|---|---|
| 66.248.236.0/24 | Screwjack, LLC | ARIN | DIRECT ALLOCATION | ● high |
| 2a0f:9400:732d::/48 | Screwjack, LLC | RIPE | ASSIGNED | ● high |
| 2a0f:9400:732e::/48 | Screwjack, LLC | RIPE | ASSIGNED | ● high |
| 2a0f:9400:732f::/48 | Screwjack, LLC | RIPE | ASSIGNED | ● high |
| 2a0f:9400:800c:100::/56 | Screwjack, LLC | RIPE | ASSIGNED | ● high |
| 2a0e:b107:1000::/44 | Screwjack, LLC | RIPE | ALLOCATED-BY-LIR | ● low |
| 2a0f:9400:2::/48 | Screwjack, LLC | RIPE | ALLOCATED-BY-LIR | ● low |
| 2a0f:9400:800c:f00::/56 | NET-SCREWJACK | RIPE | ASSIGNED | ● low |
IPv6 ranges (7)
Network trust
what's this?
RPKI hygiene: C
how networks compare →
50.0%
of checked blocks have valid RPKI ROA coverage
(4 of 8)
Possible discrepancies (4)
These blocks are registered to Screwjack, LLC 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.
| 2a0f:9400:732f::/48 /48 | authorized for AS213323 — ZMC MAR GRAPHIC DESIGN SRL-D |
| 2a0f:9400:732e::/48 /48 | authorized for AS213323 — ZMC MAR GRAPHIC DESIGN SRL-D |
| 2a0f:9400:732d::/48 /48 | authorized for AS213323 — ZMC MAR GRAPHIC DESIGN SRL-D |
| 2a0f:9400:2::/48 /48 | authorized for AS139686 — Free Range Cloud Hosting Inc |
NIC Handles
ACRO29691-RIPE
ADMIN7228-ARIN
ADMIN7228-ARIN
DUMY-RIPE
DUMY-RIPE
FRC2-MNT
GONZ-0
NETWO9043-ARIN
NETWO9043-ARIN
NETWO9043-ARIN
ORG-SL941-RIPE
S-GONZ-0
+3 more