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AS20539

Technical Centre Radio Systems Ltd.

RIPE NCC UA active Announced
More ASNs in Ukraine →
Organization
Technical Centre Radio Systems Ltd.
TCRS-AS
Registered
Mar 28, 2001
25 years ago
IPv4 Prefixes
21
12,800 addresses
IPv6 Prefixes
1
4,096 × /48
BGP Neighbours
13
7 upstream/peer · 1 downstream · 5 collector-only

Registration

AS Number AS20539 AS Name TCRS-AS Organization Technical Centre Radio Systems Ltd. Organization ID ORG-TCRS2-RIPE Address 3/5 Voskresenskaya st.,, Sumy, Ukraine, 40000 Country Ukraine (UA) Registry RIPE NCC Allocated Mar 28, 2001 Record Created Apr 09, 2002 Last Updated Jun 19, 2024 Status
active
WHOIS Server whois.ripe.net AS Description TCRS-AS - Technical Centre Radio Systems Ltd., UA Remarks Sumy, Ukraine, ====Upstream=======================, ====Clients=========================, ====SUMY-IX========================, ==========================================, Informational BGP communities advertised to customers:, Community attributes accepted from customers, 20539:20x - ITSystems, ., x… Abuse Email [email protected] Abuse Phone +380 542 619001

IPv4 Prefixes

21 prefixes · 12,800 addresses · 5 top-level Routing data as of 2026-10-07 00:00 UTC

PrefixRangeAddresses
31.135.128.0/1931.135.128.0 – 31.135.159.2558,192
31.135.128.0/2131.135.128.0 – 31.135.135.2552,048
31.135.136.0/2131.135.136.0 – 31.135.143.2552,048
31.135.144.0/2231.135.144.0 – 31.135.147.2551,024
31.135.148.0/2231.135.148.0 – 31.135.151.2551,024
31.135.152.0/2331.135.152.0 – 31.135.153.255512
31.135.154.0/2331.135.154.0 – 31.135.155.255512
91.201.224.0/2291.201.224.0 – 91.201.227.2551,024
91.201.224.0/2491.201.224.0 – 91.201.224.255256
91.201.225.0/2491.201.225.0 – 91.201.225.255256
91.201.226.0/2491.201.226.0 – 91.201.226.255256
91.201.227.0/2491.201.227.0 – 91.201.227.255256
94.199.160.0/2194.199.160.0 – 94.199.167.2552,048
193.178.228.0/23193.178.228.0 – 193.178.229.255512
193.178.228.0/24193.178.228.0 – 193.178.228.255256
193.178.229.0/24193.178.229.0 – 193.178.229.255256
194.146.228.0/22194.146.228.0 – 194.146.231.2551,024
194.146.228.0/24194.146.228.0 – 194.146.228.255256
194.146.229.0/24194.146.229.0 – 194.146.229.255256
194.146.230.0/24194.146.230.0 – 194.146.230.255256
194.146.231.0/24194.146.231.0 – 194.146.231.255256

IPv6 Prefixes

1 prefix · 4,096 × /48 Routing data as of 2026-10-07 00:00 UTC

PrefixAddresses
2a02:680:8000::/36292

BGP Neighbours

13 unique neighbours · 7 upstream/peer · 1 downstream · 5 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 (7)

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
AS3326Datagroup PRIVATE JOINT STOCK COMPANY "DATAGROUP"3192,842336
AS13249ITS-UA PRIVATE JOINT STOCK COMPANY "DATAGROUP"2923,51525
AS41967TKS-AS Sumski Telecom Systems Ltd441900
AS6939HURRICANE - Hurricane Electric LLC173740
AS14840AS14840 - BR.Digital Telecom21050
AS6663TTI-NET Euroweb Romania S.R.L.1211
AS8772NLineLLC NetAssist LLC101

Downstream side (1)

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

ASNameAS pathsIPv4 sightingsIPv6 sightings
AS13202SIM-NET Production Company POLISAN Ltd.50580

Collector-only (5)

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
AS24482SGGS-AS-AP - SG.GS11893
AS48919UA-CITY-AS UACITY Ltd.1211
AS198150SIACOM-AS SIACOM JSC1210
AS209823ENKI-AS Enki Multimedia EURL101
AS212483level86 LEVEL EIGHTY-SIX COMMUNICATIONS LTD1420

Raw RDAP Response

{
  "handle": "AS20539",
  "startAutnum": 20539,
  "endAutnum": 20539,
  "name": "TCRS-AS",
  "status": [
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      "vcardArray": [
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        [
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            "version",
            {},
            "text",
            "4.0"
          ],
          [
            "fn",
            {},
            "text",
            "Technical Centre Radio Systems Ltd."
          ],
          [
            "kind",
            {},
            "text",
            "org"
          ],
          [
            "adr",
            {
              "label": "3/5 Voskresenskaya st.,\nSumy, Ukraine, 40000"
            },
            "text",
            [
              "",
              "",
              "",
              "",
              "",
              "",
              ""
            ]
          ],
          [
            "tel",
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              "type": "voice"
            },
            "text",
            "+380 542 619001"
          ],
          [
            "tel",
            {
              "type": "fax"
            },
            "text",
            "+380 542 619002"
          ]
        ]
      ],
      "roles": [
        "registrant"
      ],
      "links": [
        {
          "value": "https://rdap.db.ripe.net/autnum/20539",
          "rel": "self",
          "href": "https://rdap.db.ripe.net/entity/ORG-TCRS2-RIPE"
        },
        {
          "value": "http://www.ripe.net/data-tools/support/documentation/terms",
          "rel": "copyright",
          "href": "http://www.ripe.net/data-tools/support/documentation/terms"
        }
      ],
      "objectClassName": "entity"
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    {
      "handle": "RIPE-NCC-END-MNT",
      "vcardArray": [
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      ],
      "roles": [
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      "links": [
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          "value": "https://rdap.db.ripe.net/autnum/20539",
          "rel": "self",
          "href": "https://rdap.db.ripe.net/entity/RIPE-NCC-END-MNT"
        },
        {
          "value": "http://www.ripe.net/data-tools/support/documentation/terms",
          "rel": "copyright",
          "href": "http://www.ripe.net/data-tools/support/documentation/terms"
        }
      ],
      "objectClassName": "entity"
    },
    {
      "handle": "TCRS-CC",
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          ],
          [
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          [
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            "text",
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            "text",
            "+380 542 619002"
          ],
          [
            "tel",
            {
              "type": "fax"
            },
            "text",
            "+380 542 619495"
          ],
          [
            "email",
            {
              "type": "abuse"
            },
            "text",
            "[email protected]"
          ]
        ]
      ],
      "roles": [
        "administrative",
        "technical"
      ],
      "links": [
        {
          "value": "https://rdap.db.ripe.net/autnum/20539",
          "rel": "self",
          "href": "https://rdap.db.ripe.net/entity/TCRS-CC"
        },
        {
          "value": "http://www.ripe.net/data-tools/support/documentation/terms",
          "rel": "copyright",
          "href": "http://www.ripe.net/data-tools/support/documentation/terms"
        }
      ],
      "objectClassName": "entity"
    },
    {
      "handle": "TCRS-MNT",
      "vcardArray": [
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            "version",
            {},
            "text",
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          ],
          [
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            "REDACTED"
          ],
          [
            "kind",
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            "text",
            "individual"
          ]
        ]
      ],
      "roles": [
        "registrant"
      ],
      "links": [
        {
          "value": "https://rdap.db.ripe.net/autnum/20539",
          "rel": "self",
          "href": "https://rdap.db.ripe.net/entity/TCRS-MNT"
        },
        {
          "value": "http://www.ripe.net/data-tools/support/documentation/terms",
          "rel": "copyright",
          "href": "http://www.ripe.net/data-tools/support/documentation/terms"
        }
      ],
      "objectClassName": "entity"
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    {
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            "TC Radio Systems Coordination Center"
          ],
          [
            "kind",
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          ],
          [
            "adr",
            {
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            },
            "text",
            [
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              "",
              "",
              "",
              "",
              "",
              ""
            ]
          ],
          [
            "tel",
            {
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            },
            "text",
            "+380 542 619001"
          ],
          [
            "tel",
            {
              "type": "voice"
            },
            "text",
            "+380 542 619002"
          ],
          [
            "tel",
            {
              "type": "fax"
            },
            "text",
            "+380 542 619495"
          ],
          [
            "email",
            {
              "type": "abuse"
            },
            "text",
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          ]
        ]
      ],
      "roles": [
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      "entities": [
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          "handle": "FLAX-RIPE",
          "vcardArray": [
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                {},
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                "REDACTED"
              ],
              [
                "kind",
                {},
                "text",
                "individual"
              ]
            ]
          ],
          "roles": [
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          ],
          "links": [
            {
              "value": "https://rdap.db.ripe.net/autnum/20539",
              "rel": "self",
              "href": "https://rdap.db.ripe.net/entity/FLAX-RIPE"
            },
            {
              "value": "http://www.ripe.net/data-tools/support/documentation/terms",
              "rel": "copyright",
              "href": "http://www.ripe.net/data-tools/support/documentation/terms"
            }
          ],
          "objectClassName": "entity"
        },
        {
          "handle": "TCRS-MNT",
          "vcardArray": [
            "vcard",
            [
              [
                "version",
                {},
                "text",
                "4.0"
              ],
              [
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                {},
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                "REDACTED"
              ],
              [
                "kind",
                {},
                "text",
                "individual"
              ]
            ]
          ],
          "roles": [
            "registrant"
          ],
          "links": [
            {
              "value": "https://rdap.db.ripe.net/autnum/20539",
              "rel": "self",
              "href": "https://rdap.db.ripe.net/entity/TCRS-MNT"
            },
            {
              "value": "http://www.ripe.net/data-tools/support/documentation/terms",
              "rel": "copyright",
              "href": "http://www.ripe.net/data-tools/support/documentation/terms"
            }
          ],
          "objectClassName": "entity"
        },
        {
          "handle": "VG297-RIPE",
          "vcardArray": [
            "vcard",
            [
              [
                "version",
                {},
                "text",
                "4.0"
              ],
              [
                "fn",
                {},
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                "REDACTED"
              ],
              [
                "kind",
                {},
                "text",
                "individual"
              ]
            ]
          ],
          "roles": [
            "administrative"
          ],
          "links": [
            {
              "value": "https://rdap.db.ripe.net/autnum/20539",
              "rel": "self",
              "href": "https://rdap.db.ripe.net/entity/VG297-RIPE"
            },
            {
              "value": "http://www.ripe.net/data-tools/support/documentation/terms",
              "rel": "copyright",
              "href": "http://www.ripe.net/data-tools/support/documentation/terms"
            }
          ],
          "objectClassName": "entity"
        }
      ],
      "objectClassName": "entity"
    }
  ],
  "remarks": [
    {
      "description": [
        "Sumy, Ukraine",
        "====Upstream=======================",
        "====Clients=========================",
        "====SUMY-IX========================",
        "==========================================",
        "Informational BGP communities advertised to customers:",
        "Community attributes accepted from customers",
        "20539:20x - ITSystems",
        ".",
        "x = 1 prepend 1",
        "x = 2 prepend 2",
        "x = 3 prepend 3",
        "x = 6 prepend 6",
        "x = 0 do not announce",
        "20539:50 - set localpref = 50",
        "20539:6666 - Blackhole community, only /32.",
        "Abuse reports: [email protected]",
        "Network Operation Center: [email protected]",
        "Looking Glass http://lg.rs.net.ua",
        "============================================",
        "Technical support: [email protected]",
        "Network Operation Center: [email protected]",
        "Corporate web site:.....................................https://rs.net.ua"
      ]
    }
  ],
  "links": [
    {
      "value": "https://rdap.db.ripe.net/autnum/20539",
      "rel": "rdap-up",
      "href": "https://rdap.db.ripe.net/autnums/rirSearch1/rdap-up/AS20539",
      "type": "application/rdap+json"
    },
    {
      "value": "https://rdap.db.ripe.net/autnum/20539",
      "rel": "rdap-up rdap-active",
      "href": "https://rdap.db.ripe.net/autnums/rirSearch1/rdap-up/AS20539?status=active",
      "type": "application/rdap+json"
    },
    {
      "value": "https://rdap.db.ripe.net/autnum/20539",
      "rel": "rdap-down",
      "href": "https://rdap.db.ripe.net/autnums/rirSearch1/rdap-down/AS20539",
      "type": "application/rdap+json"
    },
    {
      "value": "https://rdap.db.ripe.net/autnum/20539",
      "rel": "rdap-top",
      "href": "https://rdap.db.ripe.net/autnums/rirSearch1/rdap-top/AS20539",
      "type": "application/rdap+json"
    },
    {
      "value": "https://rdap.db.ripe.net/autnum/20539",
      "rel": "rdap-top rdap-active",
      "href": "https://rdap.db.ripe.net/autnums/rirSearch1/rdap-top/AS20539?status=active",
      "type": "application/rdap+json"
    },
    {
      "value": "https://rdap.db.ripe.net/autnum/20539",
      "rel": "rdap-bottom",
      "href": "https://rdap.db.ripe.net/autnums/rirSearch1/rdap-bottom/AS20539",
      "type": "application/rdap+json"
    },
    {
      "value": "https://rdap.db.ripe.net/autnum/20539",
      "rel": "self",
      "href": "https://rdap.db.ripe.net/autnum/20539",
      "type": "application/rdap+json"
    },
    {
      "value": "http://www.ripe.net/data-tools/support/documentation/terms",
      "rel": "copyright",
      "href": "http://www.ripe.net/data-tools/support/documentation/terms"
    }
  ],
  "events": [
    {
      "eventAction": "registration",
      "eventDate": "2002-04-09T13:19:20Z"
    },
    {
      "eventAction": "last changed",
      "eventDate": "2024-06-19T06:43:00Z"
    }
  ],
  "rdapConformance": [
    "nro_rdap_profile_asn_flat_0",
    "rirSearch1",
    "autnums",
    "cidr0",
    "rdap_level_0",
    "nro_rdap_profile_0",
    "redacted"
  ],
  "notices": [
    {
      "title": "Filtered",
      "description": [
        "This output has been filtered."
      ]
    },
    {
      "title": "Whois Inaccuracy Reporting",
      "description": [
        "If you see inaccuracies in the results, please visit:"
      ],
      "links": [
        {
          "value": "https://rdap.db.ripe.net/autnum/20539",
          "rel": "inaccuracy-report",
          "href": "https://www.ripe.net/contact-form?topic=ripe_dbm&show_form=true",
          "type": "text/html"
        }
      ]
    },
    {
      "title": "Source",
      "description": [
        "Objects returned came from source",
        "RIPE"
      ]
    },
    {
      "title": "Terms and Conditions",
      "description": [
        "This is the RIPE Database query service. The objects are in RDAP format."
      ],
      "links": [
        {
          "value": "https://rdap.db.ripe.net/autnum/20539",
          "rel": "terms-of-service",
          "href": "http://www.ripe.net/db/support/db-terms-conditions.pdf",
          "type": "application/pdf"
        }
      ]
    }
  ],
  "port43": "whois.ripe.net",
  "objectClassName": "autnum",
  "redacted": [
    {
      "name": {
        "description": "Personal e-mail information"
      },
      "reason": {
        "description": "Personal data"
      },
      "prePath": "$.entities[?(@.handle=='ORG-TCRS2-RIPE')].vcardArray[1][?(@[0]=='e-mail')]",
      "method": "removal"
    },
    {
      "name": {
        "description": "Personal e-mail information"
      },
      "reason": {
        "description": "Personal data"
      },
      "prePath": "$.entities[?(@.handle=='TCRS-CC')].vcardArray[1][?(@[0]=='e-mail')]",
      "method": "removal"
    },
    {
      "name": {
        "description": "Personal e-mail information"
      },
      "reason": {
        "description": "Personal data"
      },
      "prePath": "$.entities[?(@.handle=='TCRS-CC')].vcardArray[1][?(@[0]=='e-mail')]",
      "method": "removal"
    }
  ]
}

Contact details of private individuals are redacted.