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AS293

ESnet

ARIN US active Announced
More ASNs in the United States →
Organization
ESnet
ESNET
Registered
Jun 16, 1997
29 years ago
IPv4 Prefixes
27
140,288 addresses
IPv6 Prefixes
2
65,537 × /48
BGP Neighbours
170
52 upstream/peer · 70 downstream · 85 collector-only

Registration

AS Number AS293 AS Name ESNET Organization ESnet Organization ID ENSN-Z Address Berkeley Lab, 1 Cyclotron Road MS 59R3103, Berkeley, CA, 94720, United States Country United States (US) Registry ARIN Allocated Jun 16, 1997 Record Created Jun 16, 1997 Last Updated Apr 02, 2012 Status
active
WHOIS Server whois.arin.net AS Description ESNET - ESnet, US Abuse Email [email protected] Abuse Phone +1-510-486-7607

IPv4 Prefixes

27 prefixes · 140,288 addresses · 25 top-level Routing data as of 2026-10-06 16:00 UTC

PrefixRangeAddresses
134.55.0.0/16134.55.0.0 – 134.55.255.25565,536
134.167.0.0/16134.167.0.0 – 134.167.255.25565,536
192.74.210.0/24192.74.210.0 – 192.74.210.255256
192.74.214.0/23192.74.214.0 – 192.74.215.255512
192.74.217.0/24192.74.217.0 – 192.74.217.255256
192.107.175.0/24192.107.175.0 – 192.107.175.255256
192.124.50.0/23192.124.50.0 – 192.124.51.255512
192.124.52.0/22192.124.52.0 – 192.124.55.2551,024
192.124.52.0/24192.124.52.0 – 192.124.52.255256
192.124.53.0/24192.124.53.0 – 192.124.53.255256
192.124.56.0/22192.124.56.0 – 192.124.59.2551,024
192.188.23.0/24192.188.23.0 – 192.188.23.255256
192.188.24.0/22192.188.24.0 – 192.188.27.2551,024
192.188.28.0/24192.188.28.0 – 192.188.28.255256
192.188.29.0/24192.188.29.0 – 192.188.29.255256
192.188.31.0/24192.188.31.0 – 192.188.31.255256
192.188.32.0/23192.188.32.0 – 192.188.33.255512
192.188.34.0/24192.188.34.0 – 192.188.34.255256
192.188.37.0/24192.188.37.0 – 192.188.37.255256
192.188.40.0/23192.188.40.0 – 192.188.41.255512
198.99.246.0/24198.99.246.0 – 198.99.246.255256
198.207.238.0/24198.207.238.0 – 198.207.238.255256
199.201.153.0/24199.201.153.0 – 199.201.153.255256
199.201.154.0/24199.201.154.0 – 199.201.154.255256
199.201.155.0/24199.201.155.0 – 199.201.155.255256
199.201.157.0/24199.201.157.0 – 199.201.157.255256
199.201.158.0/24199.201.158.0 – 199.201.158.255256

IPv6 Prefixes

2 prefixes · 65,537 × /48 Routing data as of 2026-10-06 16:00 UTC

PrefixAddresses
2001:400::/32296
2620:8f:4001::/48280

BGP Neighbours

170 unique neighbours · 52 upstream/peer · 70 downstream · 85 collector-only. A neighbour can be seen on more than one side. Rows are ordered by AS paths: the number of BGP paths seen by RIPE RIS that contain the adjacency. Sightings count each IPv4/IPv6 route with the adjacency once per RIS peer that sees it (routes × peers), so they show how widely it is seen, not how many distinct routes it carries.

Upstream & peer side (52)

Networks seen to the left of this AS in BGP paths, toward the route collectors — typically its transit providers (upstreams) and peers.

ASNameAS pathsIPv4 sightingsIPv6 sightings
AS6939HURRICANE - Hurricane Electric LLC6,47938,1868,507
AS2914NTT-DATA-2914 - NTT America, Inc.5773,024770
AS6453AS6453 - TATA COMMUNICATIONS (AMERICA) INC5032,449379
AS3356LEVEL3 - Level 3 Parent, LLC4722,353571
AS3320DTAG Deutsche Telekom AG2281,7250
AS3491PCCWG-APAC-HK - PCCW Global (HK) Ltd.206947357
AS12956TELXIUS TELEFONICA GLOBAL SOLUTIONS SL174588128
AS25091IP-Max IP-Max SA1411,099303
AS34549MEER-AS meerfarbig GmbH & Co. KG14188885
AS35280F5 F5 Networks SARL9638844
AS20965GEANT GEANT Vereniging95425107
AS13786SEABORN - Seabras 1 USA, LLC8633143
AS29632NASSIST-AS Netassist International EOOD810126
AS9002RETN-AS RETN Limited80179141
AS8298IPNG IPng Networks GmbH7437086
AS34019HIVANE Hivane Association7429566
AS6057AS6057 - Administracion Nacional de Telecomunicaciones7231286
AS2497IIJ - Internet Initiative Japan Inc.71345133
AS23855SINGAREN-GIX-AS-AP - Singapore Advanced Research and Education Network6732859
AS1103SURFNET-NL SURF B.V.6431175
AS7195AS7195 - EDGEUNO S.A.S6115342
AS33891CORE-BACKBONE Core-Backbone GmbH603010
AS6777AMS-IX-RS Amsterdam Internet Exchange B.V.491700
AS5405INTERDOTLINK Inter.link GmbH4211822
AS39351ESAB-AS 31173 Services AB4211822
AS137409GSLNETWORKS-AS-AP - GSL Networks Pty LTD429559
AS14840AS14840 - BR.Digital Telecom39724174
AS34177CELESTE-AS Celeste SAS3911811
AS47147AS-ANX Anexia Cloud Solutions GmbH3829411
AS394256CLOUDSINGULARITY - Tech Futures Interactive Inc.3717943
AS6663TTI-NET Euroweb Romania S.R.L.3618341
AS4230AS4230 - CLARO S.A.351550
AS3216SOVAM-AS PJSC "Vimpelcom"341160
AS12637SEEWEB SEEWEB s.r.l.325922
AS50673Serverius-as Serverius Holding B.V.325922
AS2516KDDI - KDDI CORPORATION311310
AS60171AFRIX-AS AFR-IX TELECOM S.A.301070
AS39249KICUA-AS Netassist International EOOD25040
AS50629LWLCOM LWLcom GmbH25322
AS29075IELO IELO-LIAZO SERVICES SAS246013
AS37468Angola Cables - Angola Cables23780
AS1764NEXTLAYER-AS Next Layer Telekommunikationsdienstleistungs- und Beratungs GmbH215911
AS6797GLOBALCONNECT-NET GlobalConnect AB2111822
AS4455BSO IX Reach Ltd205811
AS6204ZET-NET TMRC GROUP SRL18590
AS9044SOLNET BSE Software GmbH171162
AS20766GITOYEN-MAIN-AS Association "Gitoyen"17580
AS37100SEACOM Limited - SEACOM Limited17580
AS20326TERASWITCH - TeraSwitch Networks Inc.303
AS7575AARNET-AS-AP - Australian Academic and Research Network (AARNet)230
AS48362TKSWF-AS Stadtwerke Feldkirch2724
AS22335MREN - Metropolitan Research and Education Network101

Downstream side (70)

Networks seen to the right of this AS in BGP paths — networks whose routes it carries, typically its customers (downstreams).

ASNameAS pathsIPv4 sightingsIPv6 sightings
AS683ARGONNE-AS - Argonne National Laboratory7919,1493,394
AS3562SNLL-NET-AS - Sandia National Laboratories4083,054726
AS45LLL-TIS-AS - Lawrence Livermore National Laboratory3964,203363
AS3152FNAL-AS - Fermi National Accelerator Laboratory (Fermilab)3951,147362
AS377SNLA-NET-AS - Sandia National Laboratories3943,753360
AS3428ESNET-AS - ESnet3931,896363
AS43BNL-AS - Brookhaven National Laboratory3921,9081,086
AS54297SRS-AS - Savannah River Site376382363
AS68LANL-NM - Los Alamos National Laboratory3453,059364
AS2936NERSC - National Energy Research Scientific Computing Center342383365
AS1829LANL-NV - Los Alamos National Laboratory341383363
AS50ORNL-MSRNET - Oak Ridge National Laboratory3403,780363
AS400066FRIB-01 - Michigan State University339763721
AS6406CEBAF - Thomas Jefferson National Accelerator Facility338764360
AS3671SLAC - SLAC National Accelerator Laboratory337752363
AS11678DOE-NTS-AS - U.S. Department of Energy336382363
AS16411NREL-AS-NATIONAL-RENEWABLE-ENERGY-LABORATORY - National Renewable Energy Laboratory3341,524360
AS63331LBL-2 - Lawrence Berkeley National Laboratory3341,1461,055
AS398900RENCI-FABRIC - University of North Carolina at Chapel Hill326365348
AS3424HFMT - National Nuclear Security Administration, Kansas City Plant318650361
AS14702INL-ASN2 - Idaho National Laboratory315590364
AS32982DOE-HQ - U.S. Department of Energy2986,9370
AS36288ASN-IARC - NNSA Information Assurance Response Center (IARC)289320280
AS44S1-DOMAIN - Lawrence Livermore National Laboratory2832,2820
AS16LBL - Lawrence Berkeley National Laboratory28171294
AS291ESNET-EAST - ESnet2813830
AS292ESNET-WEST - ESnet2813830
AS3425ESNET-AS - ESnet2817640
AS3431ESNET-AS - ESnet2781,5240
AS3443ESNET-AS - ESnet2783820
AS3380PPPL-AS1 - Princeton Plasma Physics Laboratory2751,1400
AS11537INTERNET2-RESEARCH-EDU - Internet2264990107
AS55126HPDF-JLAB - High Performance Data Facility2540360
AS2640AMESLAB-AS - Ames Laboratory252304110
AS46846DOE-HQ-COOP - U.S. Department of Energy1832550
AS2153CENIC-2153 - CENIC1581,28635
AS396098DOE-HANFORD - U.S. Department of Energy - Hanford12523582
AS7575AARNET-AS-AP - Australian Academic and Research Network (AARNet)10750972
AS3754NYSERNET3-AS - NYSERNet6521725
AS10490SOUTHERN-CROSSROADS-SOX - Georgia Institute of Technology5719618
AS16905LEARN-RESEARCH - LEARN5721219
AS101WASH-NSF-AS - University of Washington4526511
AS11096FLORIDANET - FloridaNet422492
AS11317GPN - Great Plains Network3722211
AS14041AS-FRGP - University Corporation for Atmospheric Research351148
AS237MERIT-AS-14 - Merit Network Inc.3223415
AS10886MAX-GIGAPOP - University of Maryland3012818
AS2381WISCNET1-AS - WiscNet291787
AS19782INDIANAGIGAPOP - Indiana University2711919
AS6325ILLINOIS-CENTURY - Illinois Century Network22560
AS5050PSC-EXT - Pittsburgh Supercomputing Center19556
AS5078ONENET-AS-1 - Oklahoma Network for Education Enrichment and18985
AS14877FL-14877 - FirstLight Fiber, Inc.18664
AS22335MREN - Metropolitan Research and Education Network18855
AS3676UIOWA-AS - University of Iowa17846
AS226LOS-NETTOS-AS - Los Nettos1616220
AS11956NOAA-XWAVE - National Oceanic and Atmospheric Administration1313237
AS7539TWAREN-TW - National Center for High-performance Computing11492
AS40498ABQG - New Mexico Lambda Rail, Inc.9301
AS40387UI-ICCN - University of Illinois6155
AS195SDSC-AS - San Diego Supercomputer Center5373
AS46435IRON - IRON5150
AS3MIT-GATEWAYS - Massachusetts Institute of Technology3710
AS59WISC-MADISON-AS - University of Wisconsin Madison191
AS103NWU-AS - Northwestern University1220
AS160U-CHICAGO-AS - The University of Chicago152
AS1224NCSA-AS - University of Illinois121
AS1929UMASSNET-NET - University of Massachusetts - AMHERST132
AS10764STARTAP - University of Illinois110
AS36375UMICH-AS-5 - University of Michigan1191

Collector-only (85)

Networks seen to the left of this AS only when they peer directly with a RIPE RIS route collector, so the adjacency may be an artefact of that peering; many of them also appear on the downstream side.

ASNameAS pathsIPv4 sightingsIPv6 sightings
AS513CERN CERN - European Organization for Nuclear Research1,2096,122511
AS14907WIKIMEDIA - Wikimedia Foundation Inc.3737076
AS19151BBO-1 - BroadbandONE, LLC3737086
AS22652FIBRENOIRE-INTERNET - Videotron Ltee3718143
AS24482SGGS-AS-AP - SG.GS372,009467
AS45489SLT-GLOBAL - Sri Lanka Telecom PLC, GLobal Peering3718143
AS49544i3Dnet i3D.net B.V3737086
AS50763MCKAYCOM Robert McKay3718543
AS52320AS52320 - GlobeNet Cabos Submarinos Colombia, S.A.S.3718143
AS199524GCORE G-Core Labs S.A.3741754
AS835GOCODEIT-EDGE - GoCodeIT Inc361810
AS36236NETACTUATE - NetActuate, Inc3618133
AS37721Virtual Technologies & Solutions - Virtual Technologies & Solutions361850
AS41327FIBERTELECOM-AS Fiber Telecom S.p.A.3617842
AS264479AS264479 - Turbozone Internet3618120
AS1828UNITAS - Unitas Global3518229
AS12779ITGATE IT.Gate S.p.A.32236172
AS12859NL-BIT BIT BV325986
AS213241TECHIT TECHIT.BE SRL28043
AS1140SIDN Stichting Internet Domeinregistratie Nederland215911
AS3333RIPE-NCC-AS Reseaux IP Europeens Network Coordination Centre (RIPE NCC)215911
AS15547NETPLUS netplus.ch SA2111833
AS15605CONNESI Connesi s.p.a.215911
AS20932SIG-ST Services Industriels de Geneve215911
AS24961MYLOC-AS WIIT AG215911
AS25160VORBOSS Vorboss Limited2111822
AS25220GLOBALNOC-AS equada network GmbH215911
AS29140HOSTSERVER-AS Hostserver GmbH215911
AS34288AS34288 Kantonsschule Zug215911
AS39122BLACKNIGHT-AS Blacknight Internet Solutions Limited215911
AS42541FIBERBY Fiberby ApS215911
AS48919UA-CITY-AS UACITY Ltd.215911
AS49605DTS-AS Digital Telecommunication Services S.r.l.215911
AS50300CUSTDC CustodianDC Limited215911
AS51184FONIRA Fonira Telekom GmbH2111822
AS51185MAINSTREAMING-AS MainStreaming SpA215911
AS51873AS-ARCADE Arcade Solutions AG215911
AS56987AS-ABACLOUDA ABACLOUDA SAS215911
AS61573AS61573 - IP TELECOM215811
AS199938NETZWERGE Netzwerge GmbH215911
AS271253AS271253 - LINK BRASIL TELECOMUNICACOES LTDA215911
AS12969Vodafone_Iceland Ljosleidarinn ehf18590
AS13237LAMBDANET-AS euNetworks GmbH18590
AS14630INVESCO - Invesco Group Services, Inc.18590
AS44901belcloud Belcloud LTD18590
AS8529OMANTEL-AS Zain Omantel International FZ-LLC11022
AS17639CONVERGE-AS - Converge ICT Solutions Inc.11011
AS28917Fiord-AS Fiord Networks, UAB11022
AS34927iFog-GmbH iFog GmbH11460
AS683ARGONNE-AS - Argonne National Laboratory22410
AS16LBL - Lawrence Berkeley National Laboratory121
AS43BNL-AS - Brookhaven National Laboratory153
AS44S1-DOMAIN - Lawrence Livermore National Laboratory160
AS45LLL-TIS-AS - Lawrence Livermore National Laboratory1111
AS50ORNL-MSRNET - Oak Ridge National Laboratory1101
AS68LANL-NM - Los Alamos National Laboratory181
AS291ESNET-EAST - ESnet110
AS292ESNET-WEST - ESnet110
AS377SNLA-NET-AS - Sandia National Laboratories1101
AS1829LANL-NV - Los Alamos National Laboratory111
AS2640AMESLAB-AS - Ames Laboratory111
AS2936NERSC - National Energy Research Scientific Computing Center111
AS3152FNAL-AS - Fermi National Accelerator Laboratory (Fermilab)131
AS3380PPPL-AS1 - Princeton Plasma Physics Laboratory130
AS3424HFMT - National Nuclear Security Administration, Kansas City Plant121
AS3425ESNET-AS - ESnet120
AS3428ESNET-AS - ESnet151
AS3431ESNET-AS - ESnet140
AS3443ESNET-AS - ESnet110
AS3562SNLL-NET-AS - Sandia National Laboratories182
AS3671SLAC - SLAC National Accelerator Laboratory121
AS6406CEBAF - Thomas Jefferson National Accelerator Facility121
AS11678DOE-NTS-AS - U.S. Department of Energy111
AS14702INL-ASN2 - Idaho National Laboratory121
AS16411NREL-AS-NATIONAL-RENEWABLE-ENERGY-LABORATORY - National Renewable Energy Laboratory141
AS32982DOE-HQ - U.S. Department of Energy1270
AS36288ASN-IARC - NNSA Information Assurance Response Center (IARC)111
AS46846DOE-HQ-COOP - U.S. Department of Energy110
AS48185team_blue team.blue NV1543
AS54297SRS-AS - Savannah River Site111
AS55126HPDF-JLAB - High Performance Data Facility101
AS63331LBL-2 - Lawrence Berkeley National Laboratory133
AS396098DOE-HANFORD - U.S. Department of Energy - Hanford121
AS398900RENCI-FABRIC - University of North Carolina at Chapel Hill111
AS400066FRIB-01 - Michigan State University122

Raw RDAP Response

{
  "endAutnum": 293,
  "entities": [
    {
      "entities": [
        {
          "events": [
            {
              "eventAction": "last changed",
              "eventDate": "2026-07-21T11:07:25-04:00"
            }
          ],
          "handle": "EH1-ARIN",
          "links": [
            {
              "href": "https://rdap.arin.net/registry/entity/EH1-ARIN",
              "rel": "self",
              "type": "application/rdap+json",
              "value": "https://rdap.arin.net/registry/autnum/293"
            },
            {
              "href": "https://whois.arin.net/rest/poc/EH1-ARIN",
              "rel": "alternate",
              "type": "application/xml",
              "value": "https://rdap.arin.net/registry/autnum/293"
            }
          ],
          "objectClassName": "entity",
          "port43": "whois.arin.net",
          "roles": [
            "technical",
            "abuse",
            "administrative"
          ],
          "status": [
            "validated"
          ],
          "vcardArray": [
            "vcard",
            [
              [
                "version",
                {},
                "text",
                "4.0"
              ],
              [
                "adr",
                {
                  "label": "One Cyclotron Road\r\nMS-59R3103\nBerkeley\nCA\n94720\nUnited States"
                },
                "text",
                [
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                  "",
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                ]
              ],
              [
                "fn",
                {},
                "text",
                "Energy Sciences Network"
              ],
              [
                "org",
                {},
                "text",
                "Lawrence Berkeley National Laboratory - Energy Sciences Network"
              ],
              [
                "kind",
                {},
                "text",
                "group"
              ],
              [
                "email",
                {},
                "text",
                "[email protected]"
              ],
              [
                "tel",
                {
                  "type": [
                    "work",
                    "voice"
                  ]
                },
                "text",
                "+1-510-486-7607"
              ]
            ]
          ]
        }
      ],
      "events": [
        {
          "eventAction": "last changed",
          "eventDate": "2023-10-04T10:36:12-04:00"
        },
        {
          "eventAction": "registration",
          "eventDate": "2010-01-22T18:00:19-05:00"
        }
      ],
      "handle": "ENSN-Z",
      "links": [
        {
          "href": "https://rdap.arin.net/registry/entity/ENSN-Z",
          "rel": "self",
          "type": "application/rdap+json",
          "value": "https://rdap.arin.net/registry/autnum/293"
        },
        {
          "href": "https://whois.arin.net/rest/org/ENSN-Z",
          "rel": "alternate",
          "type": "application/xml",
          "value": "https://rdap.arin.net/registry/autnum/293"
        }
      ],
      "objectClassName": "entity",
      "port43": "whois.arin.net",
      "roles": [
        "registrant"
      ],
      "vcardArray": [
        "vcard",
        [
          [
            "version",
            {},
            "text",
            "4.0"
          ],
          [
            "fn",
            {},
            "text",
            "ESnet"
          ],
          [
            "adr",
            {
              "label": "Berkeley Lab\r\n1 Cyclotron Road MS 59R3103\nBerkeley\nCA\n94720\nUnited States"
            },
            "text",
            [
              "",
              "",
              "",
              "",
              "",
              "",
              ""
            ]
          ],
          [
            "kind",
            {},
            "text",
            "org"
          ]
        ]
      ]
    },
    {
      "events": [
        {
          "eventAction": "last changed",
          "eventDate": "2026-07-21T11:07:25-04:00"
        }
      ],
      "handle": "EH1-ARIN",
      "links": [
        {
          "href": "https://rdap.arin.net/registry/entity/EH1-ARIN",
          "rel": "self",
          "type": "application/rdap+json",
          "value": "https://rdap.arin.net/registry/autnum/293"
        },
        {
          "href": "https://whois.arin.net/rest/poc/EH1-ARIN",
          "rel": "alternate",
          "type": "application/xml",
          "value": "https://rdap.arin.net/registry/autnum/293"
        }
      ],
      "objectClassName": "entity",
      "port43": "whois.arin.net",
      "roles": [
        "technical"
      ],
      "status": [
        "validated"
      ],
      "vcardArray": [
        "vcard",
        [
          [
            "version",
            {},
            "text",
            "4.0"
          ],
          [
            "adr",
            {
              "label": "One Cyclotron Road\r\nMS-59R3103\nBerkeley\nCA\n94720\nUnited States"
            },
            "text",
            [
              "",
              "",
              "",
              "",
              "",
              "",
              ""
            ]
          ],
          [
            "fn",
            {},
            "text",
            "Energy Sciences Network"
          ],
          [
            "org",
            {},
            "text",
            "Lawrence Berkeley National Laboratory - Energy Sciences Network"
          ],
          [
            "kind",
            {},
            "text",
            "group"
          ],
          [
            "email",
            {},
            "text",
            "[email protected]"
          ],
          [
            "tel",
            {
              "type": [
                "work",
                "voice"
              ]
            },
            "text",
            "+1-510-486-7607"
          ]
        ]
      ]
    }
  ],
  "events": [
    {
      "eventAction": "last changed",
      "eventDate": "2012-04-02T10:31:36-04:00"
    },
    {
      "eventAction": "registration",
      "eventDate": "1997-06-16T00:00:00-04:00"
    }
  ],
  "handle": "AS293",
  "links": [
    {
      "href": "https://rdap.arin.net/registry/autnum/293",
      "rel": "self",
      "type": "application/rdap+json",
      "value": "https://rdap.arin.net/registry/autnum/293"
    },
    {
      "href": "https://whois.arin.net/rest/asn/AS293",
      "rel": "alternate",
      "type": "application/xml",
      "value": "https://rdap.arin.net/registry/autnum/293"
    }
  ],
  "name": "ESNET",
  "notices": [
    {
      "description": [
        "By using the ARIN RDAP/Whois service, you are agreeing to the RDAP/Whois Terms of Use"
      ],
      "links": [
        {
          "href": "https://www.arin.net/resources/registry/whois/tou/",
          "rel": "terms-of-service",
          "type": "text/html",
          "value": "https://rdap.arin.net/registry/autnum/293"
        }
      ],
      "title": "Terms of Service"
    },
    {
      "description": [
        "If you see inaccuracies in the results, please visit: "
      ],
      "links": [
        {
          "href": "https://www.arin.net/resources/registry/whois/inaccuracy_reporting/",
          "rel": "inaccuracy-report",
          "type": "text/html",
          "value": "https://rdap.arin.net/registry/autnum/293"
        }
      ],
      "title": "Whois Inaccuracy Reporting"
    },
    {
      "description": [
        "Copyright 1997-2026, American Registry for Internet Numbers, Ltd."
      ],
      "title": "Copyright Notice"
    }
  ],
  "objectClassName": "autnum",
  "port43": "whois.arin.net",
  "rdapConformance": [
    "nro_rdap_profile_0",
    "rdap_level_0",
    "nro_rdap_profile_asn_flat_0"
  ],
  "startAutnum": 293,
  "status": [
    "active"
  ]
}

Contact details of private individuals are redacted.