Autonomous system detail

AS50

Announced

Operated by ORNL-MSRNET - Oak Ridge National Laboratory.

Summary

// analyst note
Live national-lab network reachable principally via ESnet; benign research traffic. Org RegDate 2024-02-12 is a registry refresh, not the original 1985 assignment.
// security note
NEUTRAL/DATED: no notable public abuse signal found as of 2026-06-08; benign research traffic.
IPv4 prefixes
10
~133.6K addresses
IPv6 prefixes
1
announced
Peer networks
2
2 up · 0 down
IANA block
1-1876
Assigned by ARIN
[ 01 ] — Context

About this ASN.

Updated  ·  Confidence: High

AS50 is a legacy allocation registered under ARIN to Oak Ridge National Laboratory (OrgId ORNL-Z, Oak Ridge, TN), a major U.S. Department of Energy multiprogram science laboratory, and it remains a live research network connected to the Energy Sciences Network (ESnet). As of June 2026 it originates 11 prefixes (10 IPv4 and 1 IPv6; ~133,632 IPv4 addresses), including 128.219.0.0/16, 160.91.0.0/16, several 192.x /24s, and IPv6 2620:0:2b30::/44; its primary upstream is AS293 (ESnet), it also peers with AS10490 (Georgia Institute of Technology), and it imports AS3450. RPKI shows 0 valid and 0 invalid (prefixes are IRR-valid in RADB but not yet ROA-covered). The ARIN ASN RegDate is 1985-09-20 (autnum updated 2025-01-07; org entity RegDate 2024-02-12, a registry refresh rather than the original assignment). For triage this is a live national-lab network reachable principally via ESnet, carrying benign research traffic. No notable public abuse signal was found as of June 2026.

Operator
Oak Ridge National Laboratory (ARIN OrgId ORNL-Z, Oak Ridge, TN 37830) [Confirmed] — ARIN RDAP
Country / RIR
US, ARIN [Confirmed]
Allocated
ARIN ASN RegDate 1985-09-20 (autnum updated 2025-01-07; org RegDate 2024-02-12 is a registry refresh) [Confirmed]
Org status
active — ornl.gov

Security/abuse context (NEUTRAL, DATED)

no notable public abuse signal found as of 2026-06-08; benign research traffic — bgp.he.net

Network & routing

Network type
government / research (US DOE national laboratory) [Confirmed]
Size
11 prefixes (10 IPv4, 1 IPv6; ~133,632 IPv4 addrs); incl. 128.219.0.0/16, 160.91.0.0/16, 2620:0:2b30::/44 — bgp.he.net (2026-06)
Routing/peering
actively announcing; primary upstream AS293 (ESnet), peers AS10490 (Georgia Tech), imports AS3450 — bgp.he.net
RPKI
0 valid, 0 invalid (IRR-valid in RADB, not ROA-covered) [Confirmed] — bgp.he.net
Notable usage
network for ORNL, a DOE multiprogram science lab; connected to ESnet; RADB descr "Oak Ridge National Laboratory (ASN-ORNL)" — ornl.gov
Related ASNs
AS293 (ESnet — DOE-wide backbone / upstream) [Confirmed]
Analyst note
Live national-lab network reachable principally via ESnet; benign research traffic.
[ 02 ] — Announced prefixes

What this network routes.

11 prefixes total · RIPEstat data · cached, not real-time
// IPv4 prefixes10
  1. 160.91.0.0/16/16
  2. 128.219.0.0/16/16
  3. 192.148.96.0/23/23
  4. 192.188.178.0/23/23
  5. 192.188.177.0/24/24
  6. 192.12.68.0/24/24
  7. 192.31.96.0/24/24
  8. 192.188.182.0/24/24
  9. 192.148.93.0/24/24
  10. 192.188.180.0/24/24
// IPv6 prefixes1
  1. 2620:0:2b30::/44/44
[ 03 ] — Notable peers & upstreams

Who it talks to.

2 observed neighbours
// Notable connectionsTop 2 of 2
ASNOperatorRole
AS293 ESNET - ESnet upstream
AS10490 SOUTHERN-CROSSROADS-SOX - Georgia Institute of Technology upstream
Neighbours observed via public BGP collectors; not a complete peering list.