B.Root-Server-OPS

Data as of 2026-09-06
Handle
This organisation
Netblocks24 · 1,280 IPv4 addresses
IPv6 17 prefixes (largest 2001:500:200::/44)
Registered in United States (6) · UY (4)
Record ID237087487
RegistryBGP
Customerssee who runs inside this network →
Evidence & provenance ?
Attribution RIR handle
Shared handles clustered on 5 shared RIR contact/maintainer handles
Registry names 3 distinct registrant names across these blocks
full provenance (JSON) → · how attribution works · report an issue

IP Ranges (24)

⬇ export CSV
CIDR Org name Registry Status Confidence
170.247.170.0/23 B.Root-Server-OPS BGP ANNOUNCED ● high
170.247.170.0/24 B.Root-Server-OPS BGP ANNOUNCED ● high
170.247.171.0/24 B.Root-Server-OPS BGP ANNOUNCED ● high
192.228.79.0/24 B.Root-Server-OPS ARIN DIRECT ALLOCATION ● high
199.9.14.0/23 B.Root-Server-OPS BGP ANNOUNCED ● high
199.9.14.0/24 B.Root-Server-OPS BGP ANNOUNCED ● high
199.9.15.0/24 B.Root-Server-OPS BGP ANNOUNCED ● high
2001:500:84::/48 B.Root-Server-OPS ARIN DIRECT ALLOCATION ● high
2001:500:200::/44 B.Root-Server-OPS ARIN DIRECT ALLOCATION ● high
2001:500:200::/48 B.Root-Server-OPS BGP ANNOUNCED ● high
2001:500:201::/48 B.Root-Server-OPS BGP ANNOUNCED ● high
2001:500:204::/48 B.Root-Server-OPS BGP ANNOUNCED ● high
2001:500:205::/48 B.Root-Server-OPS BGP ANNOUNCED ● high
2001:500:206::/48 B.Root-Server-OPS BGP ANNOUNCED ● high
2001:500:207::/48 B.Root-Server-OPS BGP ANNOUNCED ● high
2001:500:208::/48 B.Root-Server-OPS BGP ANNOUNCED ● high
2001:500:209::/48 B.Root-Server-OPS BGP ANNOUNCED ● high
2001:500:20a::/48 B.Root-Server-OPS BGP ANNOUNCED ● high
2801:1b8:10::/48 B.Root-Server-OPS BGP ANNOUNCED ● high
2801:1b8:10::/44 B.Root-Server-OPS BGP ANNOUNCED ● high
2801:1b8:11::/48 B.Root-Server-OPS BGP ANNOUNCED ● high
2001:13c7:702f::/48 UNKNOWN LACNIC reassigned ● medium
2801:1b8:10::/45 UNKNOWN LACNIC reassigned ● medium
2801:1b8:18::/45 UNKNOWN LACNIC reassigned ● medium

IPv6 ranges (17)

showing the 15 largest allocations
CIDR
2001:500:200::/44
2801:1b8:10::/44
2801:1b8:10::/45
2801:1b8:18::/45
2001:13c7:702f::/48
2001:500:200::/48
2001:500:201::/48
2001:500:204::/48
2001:500:205::/48
2001:500:206::/48
2001:500:207::/48
2001:500:208::/48
2001:500:209::/48
2001:500:20a::/48
2001:500:84::/48

Footprint over time

11 weekly snapshots · JSON
30 +5 netblocks since 2026-07-05
2026-07-05 peak 30 2026-09-06

Domains hosted in this network

what's this?
root-servers.net

Network trust

what's this?
RPKI hygiene: A how networks compare →
100.0% of checked blocks have valid RPKI ROA coverage (30 of 30)
Possible discrepancies (13)

These blocks are registered to B.Root-Server-OPS 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.

2001:500:200::/44 /44 authorized for AS4 — University of Southern California
2001:500:200::/44 /44 authorized for AS4 — University of Southern California
2001:500:84::/48 /48 authorized for AS4 — University of Southern California
2001:500:200::/48 /48 authorized for AS4 — University of Southern California
2001:500:201::/48 /48 authorized for AS4 — University of Southern California
2001:500:204::/48 /48 authorized for AS4 — University of Southern California
2001:500:205::/48 /48 authorized for AS4 — University of Southern California
2001:500:206::/48 /48 authorized for AS4 — University of Southern California
2001:500:207::/48 /48 authorized for AS4 — University of Southern California
2001:500:208::/48 /48 authorized for AS4 — University of Southern California
2001:500:209::/48 /48 authorized for AS4 — University of Southern California
2001:500:20a::/48 /48 authorized for AS4 — University of Southern California
2001:500:84::/48 /48 authorized for AS4 — University of Southern California

NIC Handles

AS394353 BROOT BROOT-ARIN BROOT-ARIN BROOT-ARIN