Internal Revenue Service
Data as of 2026-08-23
BGP inherited
Cluster stats
| Netblocks | 19 · 655,616 IPv4 addresses |
| IPv6 | 4 prefixes (largest 2610:30::/32) |
| Cluster ID | 227144955 |
| Registry | BGP |
| Customers | find customers using this network → |
Evidence & provenance ?
| Attribution | BGP parent (inherited) |
| Shared handles | clustered on 12 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
9 weekly snapshots · JSON
19
-32 netblocks since 2026-07-05
2026-07-05
peak 51
2026-08-23
IP Ranges (19)
⬇ export CSV| CIDR | Org name | Registry | Status | Confidence |
|---|---|---|---|---|
| 152.216.0.0/19 | Internal Revenue Service | BGP | ANNOUNCED | ● high |
| 152.216.0.0 – 152.225.255.255 | Internal Revenue Service | ARIN | DIRECT ALLOCATION | ● high |
| 152.216.4.0/22 | Internal Revenue Service | BGP | ANNOUNCED | ● high |
| 152.216.5.0/24 | Internal Revenue Service | BGP | ANNOUNCED | ● high |
| 152.216.6.0/24 | Internal Revenue Service | BGP | ANNOUNCED | ● high |
| 152.216.7.0/24 | Internal Revenue Service | BGP | ANNOUNCED | ● high |
| 152.216.8.0/22 | Internal Revenue Service | BGP | ANNOUNCED | ● high |
| 152.216.9.0/24 | Internal Revenue Service | BGP | ANNOUNCED | ● high |
| 152.216.10.0/24 | Internal Revenue Service | BGP | ANNOUNCED | ● high |
| 152.216.11.0/24 | Internal Revenue Service | BGP | ANNOUNCED | ● high |
| 152.216.12.0/22 | Internal Revenue Service | BGP | ANNOUNCED | ● high |
| 152.216.13.0/24 | Internal Revenue Service | BGP | ANNOUNCED | ● high |
| 152.216.14.0/24 | Internal Revenue Service | BGP | ANNOUNCED | ● high |
| 152.216.15.0/24 | Internal Revenue Service | BGP | ANNOUNCED | ● high |
| 204.62.146.0/24 | Internal Revenue Service | ARIN | DIRECT ALLOCATION | ● high |
| 2610:30::/32 | Internal Revenue Service | BGP | ANNOUNCED | ● high |
| 2610:30::/48 | Internal Revenue Service | BGP | ANNOUNCED | ● high |
| 2610:30:2000::/48 | Internal Revenue Service | BGP | ANNOUNCED | ● high |
| 2610:30:4000::/48 | Internal Revenue Service | BGP | ANNOUNCED | ● high |
IPv6 ranges (4)
Domains hosted in this network
what's this?Network trust
what's this?
RPKI hygiene: B
how networks compare →
89.5%
of checked blocks have valid RPKI ROA coverage
(17 of 19)
No discrepancies found among checked blocks.
NIC Handles
AS30313
BBW8-ARIN
CED40-ARIN
CSIRC1-ARIN
EARLY32-ARIN
IRS-Z
IRSRO-ARIN
JALBE5-ARIN
MEM83-ARIN
MORIZ-ARIN
MORIZ-ARIN
NMC6-ARIN