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AS WHOIS

Look up an Autonomous System — holder, registry, contacts, announced IPv4/IPv6 prefixes, upstreams and downstreams.

Your public IP address216.73.217.106 IPv4

AS21320

GEANT_IAS_VRF GEANT Vereniging Announcing routes
AS nameGEANT_IAS_VRF
OrganisationDANTE-MNT
Registry (RIR)RIPE NCC
HandleAS21320
RangeAS21320
Registered31 Oct 2001
Last changed20 Oct 2026
Abuse contact[email protected]
1IPv4 prefixes
0IPv6 prefixes
22Upstreams
149Downstreams

Upstreams

ASNetwork nameVisibility
AS2603NORDUNET NORDUnet16722
AS174COGENT-174 - Cogent Communications, LLC3810
AS3356LEVEL3 - Level 3 Parent, LLC3495
AS6939HURRICANE - Hurricane Electric LLC3007
AS9002RETN-AS RETN Limited1886
AS1853ACOnet - ACONET1219
AS13030INIT7 Init7 (Switzerland) Ltd.1064
AS6461ZAYO-6461 - Zayo Bandwidth1060
AS33891CORE-BACKBONE Core-Backbone GmbH623
AS24961MYLOC-AS WIIT AG484
AS5405INTERDOTLINK Inter.link GmbH373
AS8218NEO-ASN Zayo Infrastructure France SA362
AS3303SWISSCOM Swisscom (Schweiz) AG263
AS30844LIQUID-AS Liquid Telecommunications Ltd225
AS3216SOVAM-AS PJSC "Vimpelcom"215

Downstreams

ASNetwork nameVisibility
AS6939HURRICANE - Hurricane Electric LLC12700
AS6461ZAYO-6461 - Zayo Bandwidth11120
AS5408GR-NET National Infrastructures for Research and Technology S.A.10515
AS9002RETN-AS RETN Limited6228
AS766RedIRIS Entidad Publica Empresarial Red.es3485
AS2200FR-RENATER - Renater3010
AS3216SOVAM-AS PJSC "Vimpelcom"1892
AS1930RCCN Fundacao para a Ciencia e a Tecnologia, I.P.1861
AS31133MF-MGSM-AS PJSC MegaFon1840
AS1853ACOnet - ACONET1541
AS33891CORE-BACKBONE Core-Backbone GmbH1433
AS8517ULAKNET National Academic Network and Information Center1410
AS1955HBONE-AS KIFU (Governmental Info Tech Development Agency)1296
AS5405INTERDOTLINK Inter.link GmbH1200
AS8220COLT COLT Technology Services Group Limited1185
IPv4 prefixes (1)

RPKI-validate all prefixes of AS21320

Contacts

RoleNameHandleEmail / phoneAddress
administrative, technicalGEANT OperationsDANT-RIPE[email protected], +44 1223 371300, +44 1223 371371City House, 126-130 Hills Road, Cambridge CB2 1PQ, UK
registrantDANTE-MNTDANTE-MNT
registrantGEANT VerenigingORG-DLCU1-RIPE+441223371300, +31 (0)20 5304488, +441223371371Hoekenrode 3, 1102 BR, Amsterdam, NETHERLANDS
registrantRIPE-NCC-END-MNTRIPE-NCC-END-MNT
abuseGEANT CERT (formerly DANCERT)DCRT1-RIPE[email protected]City House, 126-130 Hills Road, Cambridge CB2 1PQ, UK
registrantDANTE-MNTDANTE-MNT
administrativeEmma AptedEJA2-RIPE+44 1223 371300, +44 1223 371371DANTE, City House, 126-130 Hills Road, Cambridge CB2 1PQ, United Kingdom
technicalNiall DonaghyNGD-RIPE+441223371393City House, Cambridge, CB2 1PQ UK
Raw registry response
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    "startAutnum": 21320,
    "endAutnum": 21320,
    "name": "GEANT_IAS_VRF",
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    ],
    "remarks": [
        {
            "description": [
                "",
                "GEANT Upstream and Peering Service",
                "The GEANT Network Connects the European National Regional Education Networks (NRENs) together",
                "We are on peeringdb.com @",
                "https://www.peeringdb.com/net/3386",
                "=== BEGIN === INFORMATION ==========================================================",
                "NRENs are configured with either the opt-in or the opt-out model at the time of joining.",
                "NRENs may switch at any time (contact GEANT Ops),",
                "Opt-out model - GEANT tags NREN routes for announcement to all providers, and NRENs",
                "block to all or specific providers as required.",
                "Opt-in model - NRENs tag routes for selective announcement to all or specific providers,",
                "and block communities take precedence over announce communities.",
                "*** BEGIN *** BGP Communities ***",
                "INFORMATIONAL - Routes we learn are tagged as follows:",
                "21320:XXXyy, where XXX denotes our relationship to the BGP speaker",
                "21320:xxxYY, where YY denotes the location at which we learned the route",
                "Relationship :-",
                "21320:645yy Upstream/Tier 1 transit",
                "21320:646yy Public peer via Internet Exchange fabric",
                "21320:647yy Private peer via dedicated interconnect",
                "21320:648yy Research & Education peers",
                "21320:649yy NREN peers, i.e. GEANT consortium members",
                "Location :- ( Geographic and Internet Exchange where applicable )",
                "Geographic (POP_ID/AREA_ID)",
                "21320:xxx09 Iberian Ring (POR,BIL,MAD,LIS)",
                "21320:xxx12 Omnipresent, i.e. injected, generated, static routes",
                "21320:xxx13 Amsterdam NL (AMS)",
                "21320:xxx14 Athens GR (ATH/ATH2)",
                "21320:xxx15 Bratislava SK (BRA)",
                "21320:xxx16 Brussels BE (BRU)",
                "21320:xxx17 Bucharest RO (BUC)",
                "21320:xxx18 Budapest HU (BUD)",
                "21320:xxx20 Dublin IE (DUB)",
                "21320:xxx22 Frankfurt DE (FRA)",
                "21320:xxx23 Geneva CH (GEN)",
                "21320:xxx24 Hamburg DE (HAM)",
                "21320:xxx25 Kaunas LT (KAU)",
                "21320:xxx26 Lisbon PT (LIS)",
                "21320:xxx27 Ljubljana SI (LJU)",
                "21320:xxx28 London UK (LON)",
                "21320:xxx30 Madrid ES (MAD)",
                "21320:xxx31 Marseilles FR (MAR)",
                "21320:xxx32 Milan Lancetti IT (MIL)",
                "21320:xxx33 Milan Caldera IT (MIL2)",
                "21320:xxx35 Paris FR (PAR)",
                "21320:xxx36 Poznan PL (POZ)",
                "21320:xxx37 Prague CZ (PRA)",
                "21320:xxx38 Riga LV (RIG)",
                "21320:xxx39 Sofia BG (SOF)",
                "21320:xxx41 Vienna AT (VIE)",
                "21320:xxx42 Zagreb AT (ZAG)",
                "21320:xxx43 London 2 UK (LON2)",
                "21320:xxx44 Porto PT (POR)",
                "21320:xxx45 Chisinau MD (CHI)",
                "21320:xxx46 Kiev UA (KIE)",
                "21320:xxx47 Bilbao ES (BIL)",
                "21320:xxx48 Cork IE (COR)",
                "21320:xxx49 Tartu EE (TAR)",
                "21320:xxx50 Thessaloniki GR (THE)",
                "21320:xxx51 RESERVED",
                "21320:xxx52 Budapest 2 (BUD2)",
                "21320:xxx53 Geneva 2 (GEN2)",
                "21320:xxx54 Belgrade (BEL)",
                "21320:xxx55 RESERVED",
                "21320:xxx56 Luxembourg (LUX)",
                "21320:xxx57 Stockholm (STO)",
                "Internet Exchanges (IX_ID)",
                "21320:xxx79 Stockholm Netnod AB",
                "21320:xxx80 Helsinki FICIX",
                "21320:xxx81 Poznan PL Equinix WA",
                "21320:xxx82 Lisbon GigaPIX",
                "21320:xxx83 Athens GR-IX",
                "21320:xxx84 Brussels BNIX",
                "21320:xxx85 Luxembourg LU-CIX",
                "21320:xxx86 Sofia BIX.BG",
                "21320:xxx87 Ljubljana SI SIX",
                "21320:xxx88 Budapest HU BiX",
                "21320:xxx89 Madrid ES DE-CIX Madrid",
                "21320:xxx90 Marseilles FR DE-CIX Marseilles",
                "21320:xxx91 Prague CZ NIX.CZ",
                "21320:xxx92 <virtual> -- NORDUnet peering aggregation",
                "21320:xxx93 Dublin IE INEX LAN1",
                "21320:xxx94 Geneva CH CIXP",
                "21320:xxx95 Milan IT MIT-IT",
                "21320:xxx96 London UK LINX Juniper LAN",
                "21320:xxx97 Vienna AT VIX",
                "21320:xxx98 Frankfurt DE DE-CIX Frankfurt",
                "21320:xxx99 Amsterdam NL AMS-IX",
                "*** BEGIN *** LEGACY BGP Communities - Informational ***",
                "GEANT Tags routes as follows:",
                "20965:0003 GEANT IAS Peering Service peers, public (IX) only.",
                "20965:0004 GEANT IAS Peering Service peers, public (IX) and private.",
                "20965:15169 - All routes received from Google",
                "20965:7777 - All routes received from the commodity providers",
                "*** END *** LEGACY BGP Communities - Informational ***",
                "TRAFFIC ENGINEERING - NRENs may engineer (re-)announcements as follows:",
                "Announce :-",
                "64700:<ASN> - Announce toward <ASN> everywhere",
                "64700:65532 - Announce toward all public peers",
                "64700:65533 - Announce toward all private peers",
                "64700:65534 - Announce toward all upstreams",
                "Prepend :-",
                "You must use two communities at a minimum.",
                "One to specify who to prepend to, and how many times:",
                "6480X:<ASN> - Where X can be 1, 2, 3 or 6 times prepending",
                "origin:<ASN>L:6480X - As above",
                "One to specify at which location to prepend, again specifying to whom:times:",
                "648XX:<ASN> - Where XX is the IX or POP code (see Informational communities)",
                "origin:<ASN>L:648X - As above",
                "The following communities take effect globally; no location required.",
                "If you need to prepend X times toward a subset of the below, you must do so per ASN.",
                "6480X:65532 - Prepend X times toward all public peers",
                "6480X:65533 - Prepend X times toward all private peers",
                "6480X:65534 - Prepend X times toward all upstreams",
                "Block :-",
                "64512:<ASN> - Don't announce to <ASN>",
                "origin:<ASN>L:64512 - Don't announce to <ASN> (required for 4-byte ASNs)",
                "64599:65532 - Don't announce to peers at AMS-IX (Amsterdam)",
                "64598:65532 - Don't announce to peers at DE-CIX (Frankfurt)",
                "64597:65532 - Don't announce to peers at VIX (Vienna)",
                "64596:65532 - Don't announce to peers at LINX (London)",
                "64595:65532 - Don't announce to peers at MIX (Milan)",
                "64594:65532 - Don't announce to peers at CIXP (Geneva)",
                "64593:65532 - Don't announce to peers at INEX (Dublin via London)",
                "64592:65532 - Don't announce to peers at NORDUnet peering aggregation (AMS, LON)",
                "64591:65532 - Don't announce to peers at NIX.CZ (Prague)",
                "64588:65532 - Don't announce to peers at Budapest HU BiX",
                "64589:65532 - Don't announce to peers at Madrid ES DE-CIX Madrid",
                "64590:65532 - Don't announce to peers at Marseilles FR DE-CIX Marseilles",
                "64512:65532 - Don't announce to any public peers",
                "64512:65533 - Don't announce to any private peers",
                "64512:65534 - Don't announce to any upstreams",
                "*** BEGIN *** LEGACY BGP Communities - Traffic Engineering ***",
                "*** The following communities have been deprecated and will soon be retired ***",
                "20965:7000 - Don't announce the route to Commodity Providers",
                "20965:7010 - Prepend GEANT AS one time towards Commodity Providers",
                "20965:7020 - Prepend GEANT AS two times towards Commodity Providers",
                "20965:7030 - Prepend GEANT AS three times towards Commodity Providers",
                "20965:7060 - Prepend GEANT AS six times towards Commodity Providers",
                "20965:64550 - Don't announce to peers at AMS-IX (Amsterdam)",
                "20965:0011 & 20965:0013 - Don't announce to private peers.",
                "20965:0008 - RTBH service, /32 and /128 prefixes only",
                "*** END *** LEGACY BGP Communities - Traffic Engineering ***",
                "*** END *** BGP Communities",
                "=== END === INFORMATION ==========================================================",
                "=== BEGIN === POLICY ===============================================================",
                "*** BEGIN *** ROUTING POLICY - NREN",
                "We set local-preference 150 primary/load-balancing or 125 backup on import",
                "AS7500 (DNS root name-server) is behind RENATER",
                "GWS NRENs - those NRENs who receive a full routing table from GEANT",
                "*** END *** ROUTING POLICY - NREN",
                "*** BEGIN *** ROUTING POLICY - Upstream",
                "We set local-preference 80 on import",
                "COGENT",
                "TELIA",
                "*** END *** ROUTING POLICY - Upstream",
                "=== END === POLICY ===============================================================",
                "GEANT NRENs - National Regional Educational Networks",
                "NREN prefixes are given a LOCAL-PREF of 150",
                "GEANT PEERS - non-NRENs",
                "Public peers are accepted with local preference 90",
                "Private peers are accepted with local preference 95",
                "*************",
                "MACROS AS-GEANTNRN routes",
                "These receive peering routes but not other NREN routes from AS21320",
                "The following ASs are our non-NREN peers who receive NREN routes:"
            ]
        }
    ],
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            "rel": "rdap-top",
            "href": "https://rdap.db.ripe.net/autnums/rirSearch1/rdap-top/AS21320",
            "type": "application/rdap+json"
        },
        {
            "value": "https://rdap.db.ripe.net/autnum/21320",
            "rel": "rdap-top rdap-active",
            "href": "https://rdap.db.ripe.net/autnums/rirSearch1/rdap-top/AS21320?status=active",
            "type": "application/rdap+json"
        },
        {
            "value": "https://rdap.db.ripe.net/autnum/21320",
            "rel": "rdap-bottom",
            "href": "https://rdap.db.ripe.net/autnums/rirSearch1/rdap-bottom/AS21320",
            "type": "application/rdap+json"
        },
        {
            "value": "https://rdap.db.ripe.net/autnum/21320",
            "rel": "self",
            "href": "https://rdap.db.ripe.net/autnum/21320",
            "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": "2001-10-31T13:07:25Z"
        },
        {
            "eventAction": "last changed",
            "eventDate": "2026-10-20T12:41:44Z"
        }
    ],
    "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/21320",
                    "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/21320",
                    "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": "$.entities[?(@.handle=='DANT-RIPE')].vcardArray[1][?(@[0]=='e-mail')]",
            "method": "removal"
        },
        {
            "name": {
                "description": "Personal e-mail information"
            },
            "reason": {
                "description": "Personal data"
            },
            "prePath": "$.entities[?(@.handle=='ORG-DLCU1-RIPE')].vcardArray[1][?(@[0]=='e-mail')]",
            "method": "removal"
        },
        {
            "name": {
                "description": "Personal e-mail information"
            },
            "reason": {
                "description": "Personal data"
            },
            "prePath": "$.entities[?(@.handle=='DCRT1-RIPE')].vcardArray[1][?(@[0]=='e-mail')]",
            "method": "removal"
        }
    ]
}

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