Internet Security Research Group
Data as of 2026-10-04
BGP inherited
This organisation
| Netblocks | 3 · 512 IPv4 addresses |
| IPv6 | 1 prefix (largest 2602:80a:6000::/44) |
| Also registered under this name | 36 netblocks across 13 separate records |
| Record ID | 248610716 |
| Registry | ARIN |
| Customers | see who runs inside this network → |
Evidence & provenance ?
| Attribution | BGP parent (inherited) |
| Shared handles | clustered on 4 shared RIR contact/maintainer handles |
| Registry names | 1 distinct registrant name across these blocks |
| full provenance (JSON) → · how attribution works · report an issue | |
IP Ranges (3)
⬇ export CSV| CIDR | Org name | Registry | Status | Confidence |
|---|---|---|---|---|
| 23.178.112.0/24 | Internet Security Research Group | ARIN | DIRECT ALLOCATION | ● high |
| 64.112.117.0/24 | Internet Security Research Group | ARIN | DIRECT ALLOCATION | ● high |
| 2602:80a:6000::/44 | Internet Security Research Group | ARIN | DIRECT ALLOCATION | ● high |
IPv6 ranges (1)
| CIDR |
|---|
| 2602:80a:6000::/44 |
Network trust
what's this?
RPKI hygiene: A
how networks compare →
100.0%
of checked blocks have valid RPKI ROA coverage
(3 of 3)
Possible discrepancies (3)
These blocks are registered to Internet Security Research Group 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.
| 2602:80a:6000::/44 /44 | authorized for AS209242 — Cloudflare London, LLC |
| 23.178.112.0/24 /24 | authorized for AS209242 — Cloudflare London, LLC |
| 64.112.117.0/24 /24 | authorized for AS209242 — Cloudflare London, LLC |
NIC Handles
ISRG
SECUR156-ARIN
SRE151-ARIN
SRE151-ARIN