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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

AS33891

CORE-BACKBONE Core-Backbone GmbH Not announcing
AS nameCORE-BACKBONE
OrganisationCORE-BACKBONE
Registry (RIR)RIPE NCC
HandleAS33891
RangeAS33891
Registered01 Sep 2004
Last changed20 Jul 2023
Abuse contact[email protected]
0IPv4 prefixes
0IPv6 prefixes
115Upstreams
2533Downstreams

Upstreams

ASNetwork nameVisibility
AS60068CDN77 Datacamp Limited57365
AS12577MMC-AT-AS MMC GmbH51995
AS47692NESSUS Nessus GmbH51287
AS39392SuperNetwork SH.cz s.r.o.38536
AS1299TWELVE99 Arelion Sweden AB16175
AS49434FBWNETWORKS FBW NETWORKS SAS15892
AS50673Serverius-as Serverius Holding B.V.12042
AS3257GTT-BACKBONE GTT Communications Inc.11285
AS3356LEVEL3 - Level 3 Parent, LLC11006
AS6939HURRICANE - Hurricane Electric LLC6737
AS50629LWLCOM LWLcom GmbH4283
AS13030INIT7 Init7 (Switzerland) Ltd.4019
AS6461ZAYO-6461 - Zayo Bandwidth3206
AS29691NINE Nine Internet Solutions AG2644
AS6830LibertyGlobal Liberty Global Europe Holding B.V.2613

Downstreams

ASNetwork nameVisibility
AS49666TIC-GW-AS Telecommunication Infrastructure Company39036
AS3356LEVEL3 - Level 3 Parent, LLC23159
AS6461ZAYO-6461 - Zayo Bandwidth22018
AS60068CDN77 Datacamp Limited18684
AS39392SuperNetwork SH.cz s.r.o.15012
AS6939HURRICANE - Hurricane Electric LLC13922
AS1299TWELVE99 Arelion Sweden AB10464
AS12912TMPL T-Mobile Polska S.A.10145
AS50673Serverius-as Serverius Holding B.V.8594
AS59796STORMWALL-AS StormWall s.r.o.8216
AS44592SkyLink SkyLink Data Center BV7300
AS8881VERSATEL 1&1 Versatel GmbH6092
AS4637ASN-TELSTRA-GLOBAL - Telstra Global6064
AS7195AS7195 - EDGEUNO S.A.S5273
AS3257GTT-BACKBONE GTT Communications Inc.5232

RPKI-validate all prefixes of AS33891

Contacts

RoleNameHandleEmail / phoneAddress
administrative, technicalCore-Backbone GmbH - Contact RoleCGCR1-RIPE[email protected], +4991131043200Core-Backbone GmbH, Deutschherrnstr. 15-19, 90429 Nürnberg
registrantCORE-BACKBONECORE-BACKBONE
registrantCore-Backbone GmbHORG-IICG1-RIPE+4991131043200Deutschherrnstr. 15-19, 90429, Nürnberg, GERMANY
registrantRIPE-NCC-END-MNTRIPE-NCC-END-MNT
abuseCore-Backbone NetmasterCN2660-RIPE[email protected]Deutschherrnstr. 15-19, 90429 Nürnberg, Germany
registrantCORE-BACKBONECORE-BACKBONE
administrative, technicalDaniel MareschDM2147-RIPE+49 911 31043200Core-Backbone GmbH, Deutschherrnstr. 15-19, 90429 Nürnberg, Germany
Raw registry response
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    "handle": "AS33891",
    "startAutnum": 33891,
    "endAutnum": 33891,
    "name": "CORE-BACKBONE",
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                    "handle": "DM2147-RIPE",
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                        }
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                    "objectClassName": "entity"
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    ],
    "remarks": [
        {
            "description": [
                "CORE-BACKBONE GMBH GLOBAL NETWORK",
                "*********************************************",
                "Upstreams:",
                "---------------------------------------------",
                "LEVEL3",
                "TELIA",
                "Heavy abstraction of accepting routes at peerings",
                "as we do peer at many points with many networks and",
                "do apply filter with their AS-SET, apply filters for",
                "more specific than /24 prefixes, have max-prefix",
                "filters applied, but we do not want to maintain always",
                "a list here:",
                "Also, we do filter very strict our customers at",
                "same very hard level.",
                "Customers:",
                "Peerings:",
                "** BGP communities for Core-Backbone customers **",
                "****************************************************",
                "Origin communities on received routes:",
                "33891:33890 BLACKHOLE Community",
                "33891:33891 Routes learned at Core-Backbone 33891",
                "33891:33892 Routes learned at Customers/Downstreams",
                "33891:33893 Routes learned at Private/Publicpeering",
                "33891:33900 Routes learned at Private Peerings",
                "----------------------------------------------------",
                "33891:33894 Routes learned at NIX, Germany",
                "33891:33895 Routes learned at DECIX, FRA, Germany",
                "33891:33896 Routes learned at LINX, England",
                "33891:33897 Routes learned at AMSIX, The Netherlands",
                "33891:33898 Routes learned at SWISSIX, Switzerland",
                "33891:33899 Routes learned at VIX, Austria",
                "33891:33901 Routes learned at PEERINGCZ, Czech Republic",
                "33891:33902 Routes learned at HOPUS, Germany",
                "33891:33903 Routes learned at DECIX, NYK, United States",
                "33891:33904 Routes learned at NYIIX, United States",
                "33891:33905 Routes learned at ECIX-DUS, Germany",
                "33891:33906 Routes learned at FRANCEIX, France",
                "33891:33907 Routes learned at NETNOD, Sweden",
                "33891:33908 Routes learned at NIX, Czech Republic",
                "33891:33909 Routes learned at SAIX, Austria",
                "33891:33910 Routes learned at EQUINIX, Singapore",
                "33891:33911 Routes learned at BCIX, Germany",
                "33891:33912 Routes learned at COMMUNITY IX, Germany",
                "33891:33913 Routes learned at DECIX, DUS, Germany",
                "33891:33914 Routes learned at DECIX, MUC, Germany",
                "33891:33915 Routes learned at DECIX, HAM, Germany",
                "33891:33916 Routes learned at DECIX, MAD, Spain",
                "33891:33917 Routes learned at STHIX, COP, Denmark",
                "33891:33918 Routes learned at ESPANIX, MAD, Spain",
                "33891:33919 Routes learned at STG-IX, STG, Germany",
                "33891:33920 Routes learned at MIX-IT, MIL, Italy",
                "Prepend communities for advertising routes:",
                "33891:400X Routes announced to NIX, Germany",
                "33891:500X Routes announced to DECIX, FRA, Germany",
                "33891:600X Routes announced to LINX, England",
                "33891:700X Routes announced to AMSIX, The Netherlands",
                "33891:800X Routes announced to SWISSIX, Switzerland",
                "33891:900X Routes announced to VIX, Austria",
                "33891:1000X Routes announced to PEERINGCZ, Czech Republic",
                "33891:1100X Routes announced to HOPUS, GERMANY",
                "33891:1200X Routes announced to DECIX, NYK, United States",
                "33891:1300X Routes announced to NYIIX, United States",
                "33891:1400X Routes announced to ECIX-DUS, Germany",
                "33891:1500X Routes announced to FRANCEIX, France",
                "33891:1600X Routes announced to NETNOD, Sweden",
                "33891:1700X Routes announced to NIX, Czech Republic",
                "33891:1800X Routes announced to SAIX, Austria",
                "33891:1900X Routes announced to EQUINIX, Singapore",
                "33891:2000X Routes announced to BCIX, Germany",
                "33891:2100X Routes announced to COMMUNITY IX, Germany",
                "33891:2200X Routes announced to DECIX, DUS, Germany",
                "33891:2300X Routes announced to DECIX, MUC, Germany",
                "33891:2400X Routes announced to DECIX, HAM, Germany",
                "33891:2500X Routes announced to DECIX, MAD, Spain",
                "33891:2600X Routes announced to STHIX, COP, Danmark",
                "33891:2700X Routes announced to ESPANIX, MAD, Spain",
                "33891:2800X Routes announced to STGIX, STG, Germany",
                "33891:2900X Routes announced to MIX-IT, MIL, Italy",
                "---------------------------------------------------",
                "X stands for 1-3 prepends or 0 for do not annouce"
            ]
        }
    ],
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            "rel": "rdap-up",
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            "type": "application/rdap+json"
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        {
            "value": "https://rdap.db.ripe.net/autnum/33891",
            "rel": "rdap-up rdap-active",
            "href": "https://rdap.db.ripe.net/autnums/rirSearch1/rdap-up/AS33891?status=active",
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            "value": "http://www.ripe.net/data-tools/support/documentation/terms",
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        }
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    "events": [
        {
            "eventAction": "registration",
            "eventDate": "2004-09-01T12:28:10Z"
        },
        {
            "eventAction": "last changed",
            "eventDate": "2023-07-20T08:19:37Z"
        }
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        "autnums",
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    ],
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            "title": "Filtered",
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            "title": "Whois Inaccuracy Reporting",
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            "links": [
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            "description": [
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            "links": [
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    "objectClassName": "autnum",
    "redacted": [
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            "name": {
                "description": "Personal e-mail information"
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                "description": "Personal data"
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            "prePath": "$.entities[?(@.handle=='CGCR1-RIPE')].vcardArray[1][?(@[0]=='e-mail')]",
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        {
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            "method": "removal"
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}

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