ASN Lookup Tool

Core Backbone GmbH core-backbone.com DE DE 4 Routes

AS Data

AS33891

AS33891Core Backbone GmbH

AS Number 33891
AS Name CORE-BACKBONE
Organization Core Backbone GmbH (org-iicg1-ripe)
Country DE
Website core-backbone.com
Number of IPv4 Routes 4
Number of IPv6 Routes 0
ASN type ISP
Allocation Status ASSIGNED
Registry RIPE
Date Allocated 2004-09-01

ASN Intelligence API for production workflows

Use ASN data for AS33891 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

Access complete peers, upstreams, downstreams, routes, WHOIS, and contact intelligence via our API. Learn more

Powered by ASN data

IP Ranges

Route # IPs
31.7.188.117/32 1
31.7.188.96/32 1
31.7.180.181/32 1
45.153.58.72/32 1

Raw Whois Response

% This is the RIPE Database query service.
% The objects are in RPSL format.
%
% The RIPE Database is subject to Terms and Conditions.
% See https://docs.db.ripe.net/terms-conditions.html

% Note: this output has been filtered.
%       To receive output for a database update, use the "-B" flag.

% Information related to 'AS33792 - AS34436'

as-block:       AS33792 - AS34436
descr:          RIPE NCC ASN block
remarks:        These AS Numbers are assigned to network operators in the RIPE NCC service region.
mnt-by:         RIPE-NCC-HM-MNT
created:        2023-04-20T14:54:28Z
last-modified:  2023-04-20T14:54:28Z
source:         RIPE

% Information related to 'AS33891'

% Abuse contact for 'AS33891' is 'abuse@core-backbone.com'

aut-num:        AS33891
as-name:        CORE-BACKBONE
descr:          CORE-BACKBONE GMBH GLOBAL NETWORK
remarks:        *********************************************
remarks:        Upstreams:
remarks:        ---------------------------------------------
remarks:        LEVEL3
import:         from AS3356 accept ANY
export:         to AS3356 announce AS-CORE-BACKBONE
remarks:        ---------------------------------------------
remarks:        TELIA
import:         from AS1299 accept ANY
export:         to AS1299 announce AS-CORE-BACKBONE
remarks:        ---------------------------------------------
remarks:        *********************************************
remarks:        Heavy abstraction of accepting routes at peerings
remarks:        as we do peer at many points with many networks and
remarks:        do apply filter with their AS-SET, apply filters for
remarks:        more specific than /24 prefixes, have max-prefix
remarks:        filters applied, but we do not want to maintain always
remarks:        a list here:
import:         from AS-ANY accept ANY
remarks:        Also, we do filter very strict our customers at
remarks:        same very hard level.
remarks:        ---------------------------------------------
remarks:        Customers:
remarks:        ---------------------------------------------
export:         to AS-CORE-BACKBONE announce ANY
remarks:        ---------------------------------------------
remarks:        Peerings:
remarks:        ---------------------------------------------
export:         to AS-ANY announce AS-CORE-BACKBONE
remarks:        ---------------------------------------------
import-via:     AS6777 from AS-ANY EXCEPT AS-CORE-BACKBONE:AS-EXCEPTIONS accept ANY
export-via:     AS6777 to AS-ANY EXCEPT AS-CORE-BACKBONE:AS-EXCEPTIONS announce ANY
remarks:        *********************************************
org:            ORG-IICG1-RIPE
admin-c:        CGCR1-RIPE
tech-c:         CGCR1-RIPE
status:         ASSIGNED
mnt-by:         RIPE-NCC-END-MNT
remarks:        ** BGP communities for Core-Backbone customers **
remarks:        ****************************************************
remarks:        Origin communities on received routes:
remarks:        33891:33890 BLACKHOLE Community
remarks:        33891:33891 Routes learned at Core-Backbone 33891
remarks:        33891:33892 Routes learned at Customers/Downstreams
remarks:        33891:33893 Routes learned at Private/Publicpeering
remarks:        33891:33900 Routes learned at Private Peerings
remarks:        ----------------------------------------------------
remarks:        33891:33894 Routes learned at NIX, Germany
remarks:        33891:33895 Routes learned at DECIX, FRA, Germany
remarks:        33891:33896 Routes learned at LINX, England
remarks:        33891:33897 Routes learned at AMSIX, The Netherlands
remarks:        33891:33898 Routes learned at SWISSIX, Switzerland
remarks:        33891:33899 Routes learned at VIX, Austria
remarks:        33891:33901 Routes learned at PEERINGCZ, Czech Republic
remarks:        33891:33902 Routes learned at HOPUS, Germany
remarks:        33891:33903 Routes learned at DECIX, NYK, United States
remarks:        33891:33904 Routes learned at NYIIX, United States
remarks:        33891:33905 Routes learned at ECIX-DUS, Germany
remarks:        33891:33906 Routes learned at FRANCEIX, France
remarks:        33891:33907 Routes learned at NETNOD, Sweden
remarks:        33891:33908 Routes learned at NIX, Czech Republic
remarks:        33891:33909 Routes learned at SAIX, Austria
remarks:        33891:33910 Routes learned at EQUINIX, Singapore
remarks:        33891:33911 Routes learned at BCIX, Germany
remarks:        33891:33912 Routes learned at COMMUNITY IX, Germany
remarks:        33891:33913 Routes learned at DECIX, DUS, Germany
remarks:        33891:33914 Routes learned at DECIX, MUC, Germany
remarks:        33891:33915 Routes learned at DECIX, HAM, Germany
remarks:        33891:33916 Routes learned at DECIX, MAD, Spain
remarks:        33891:33917 Routes learned at STHIX, COP, Denmark
remarks:        33891:33918 Routes learned at ESPANIX, MAD, Spain
remarks:        33891:33919 Routes learned at STG-IX, STG, Germany
remarks:        33891:33920 Routes learned at MIX-IT, MIL, Italy
remarks:        ****************************************************
remarks:        Prepend communities for advertising routes:
remarks:        33891:400X Routes announced to NIX, Germany
remarks:        33891:500X Routes announced to DECIX, FRA, Germany
remarks:        33891:600X Routes announced to LINX, England
remarks:        33891:700X Routes announced to AMSIX, The Netherlands
remarks:        33891:800X Routes announced to SWISSIX, Switzerland
remarks:        33891:900X Routes announced to VIX, Austria
remarks:        33891:1000X Routes announced to PEERINGCZ, Czech Republic
remarks:        33891:1100X Routes announced to HOPUS, GERMANY
remarks:        33891:1200X Routes announced to DECIX, NYK, United States
remarks:        33891:1300X Routes announced to NYIIX, United States
remarks:        33891:1400X Routes announced to ECIX-DUS, Germany
remarks:        33891:1500X Routes announced to FRANCEIX, France
remarks:        33891:1600X Routes announced to NETNOD, Sweden
remarks:        33891:1700X Routes announced to NIX, Czech Republic
remarks:        33891:1800X Routes announced to SAIX, Austria
remarks:        33891:1900X Routes announced to EQUINIX, Singapore
remarks:        33891:2000X Routes announced to BCIX, Germany
remarks:        33891:2100X Routes announced to COMMUNITY IX, Germany
remarks:        33891:2200X Routes announced to DECIX, DUS, Germany
remarks:        33891:2300X Routes announced to DECIX, MUC, Germany
remarks:        33891:2400X Routes announced to DECIX, HAM, Germany
remarks:        33891:2500X Routes announced to DECIX, MAD, Spain
remarks:        33891:2600X Routes announced to STHIX, COP, Danmark
remarks:        33891:2700X Routes announced to ESPANIX, MAD, Spain
remarks:        33891:2800X Routes announced to STGIX, STG, Germany
remarks:        33891:2900X Routes announced to MIX-IT, MIL, Italy
remarks:        ---------------------------------------------------
remarks:        X stands for 1-3 prepends or 0 for do not annouce
remarks:        ****************************************************
mnt-by:         CORE-BACKBONE
created:        2004-09-01T12:28:10Z
last-modified:  2023-07-20T08:19:37Z
source:         RIPE

organisation:   ORG-IICG1-RIPE
org-name:       Core-Backbone GmbH
country:        DE
reg-nr:         District court N�rnberg HRB 42754
org-type:       LIR
address:        Deutschherrnstr. 15-19
address:        90429
address:        N�rnberg
address:        GERMANY
phone:          +4991131043200
admin-c:        DM2147-RIPE
admin-c:        UK489-RIPE
mnt-ref:        RIPE-NCC-HM-MNT
mnt-ref:        CORE-BACKBONE
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         CORE-BACKBONE
abuse-c:        CN2660-RIPE
created:        2004-04-17T11:08:15Z
last-modified:  2026-05-13T07:31:15Z
source:         RIPE # Filtered

role:           Core-Backbone GmbH - Contact Role
address:        Core-Backbone GmbH
address:        Deutschherrnstr. 15-19
address:        90429 N�rnberg
abuse-mailbox:  abuse@core-backbone.com
phone:          +4991131043200
org:            ORG-IICG1-RIPE
admin-c:        DM2147-RIPE
admin-c:        UK489-RIPE
tech-c:         DM2147-RIPE
tech-c:         UK489-RIPE
nic-hdl:        CGCR1-RIPE
mnt-by:         CORE-BACKBONE
created:        2007-02-23T10:42:43Z
last-modified:  2024-02-13T13:47:55Z
source:         RIPE # Filtered

% This query was served by the RIPE Database Query Service version 1.123 (SHETLAND)

Parsed Whois Response

Peers

AS Number Description Country
AS25248 RADIOKOMUNIKACE a.s. CZ
AS199939 KeenSystems B.V. NL
AS48324 webgo GmbH DE
AS8680 Sure (Guernsey) Limited GG
AS58057 Securebit AG CH
AS41998 NetCom BW GmbH DE
AS62119 Root SAS FR
AS50072 Talpa TV B.V. NL
AS205432 Graficheskiy COD LLC RU
AS21351 Canal + Telecom SAS GP
AS210627 Grayshott Gigabit Limited GB
AS29001 Shaun O'Neil, trading as DMA Computer Services NL
AS9264 Academia Sinica TW
AS4862 Orange Business AS for Asia HK
AS8315 WorldStream B.V. NL
AS139341 ACEVILLE PTE.LTD. SG
AS198521 ZIM INTEGRATED SHIPPING SERVICES LTD IL
AS213822 Martinus Buijs trading as BuijsIT NL
AS12941 intersaar GmbH DE
AS206735 Novelcomm LP GR
AS1126 Vancis Advanced ICT Services ZZ
AS3252 Fiberax Networking&Cloud Ltd. GB
AS60793 TELEFONICA TECH NORTHERN IRELAND LIMITED GB
AS200062 Optitrust GmbH DE
AS204989 Rekers Digitaltechnik Beteiligungsgesellschaft mbH trading as Rekers Digitaltechnik GmbH & Co.KG DE
AS2607 Zdruzenie pouzivatelov Slovenskej akademickej datovej siete SANET SK
AS20845 DIGI Tavkozlesi es Szolgaltato Kft. HU
AS9123 JSC "TIMEWEB" RU
AS20893 SYSTEM-CLINCH CH
AS31272 WildPark Co UA
AS210123 NUBBITEL TELECOM,S.L. ES
AS27281 Quantcast Corporation US
AS29838 Atlantic Metro Communications II, Inc. US
AS262427 Invista Net Provedor de Acesso Ltda BR
AS132167 Nine Communications Company Limited MM
AS8308 NAUKOWA I AKADEMICKA SIEC KOMPUTEROWA PANSTWOWY INSTYTUT BADAWCZY PL
AS999 CORIX NETWORKS US
AS34803 Broadband Gibraltar Limited GI
AS28225 Provedornet Telecom. e Servi�os de Internet Ltda BR
AS56630 Melbikomas UAB LT
AS32787 Akamai Technologies, Inc. US
AS12741 Netia SA PL
AS205627 Daimler Truck AG DE
AS211733 Prime creation events SAS FR
AS215760 Adam Grazioli IT
AS207994 Servcity BE
AS44620 Netlen Internet Hizmetleri Ltd. Sti. TR
AS31399 Mercedes Benz Group AG DE
AS8681 JT (Jersey) Limited JE
AS20773 Host Europe GmbH DE
AS7843 Charter Communications Inc US
AS44670 Tvigle Media LLC RU
AS208959 SlashN Services Pte. Ltd. SG
AS58212 dataforest GmbH DE
AS28126 BRISANET SERVICOS DE TELECOMUNICACOES S.A BR
AS133210 EN Technologies Pte Ltd SG
AS151326 DCConnect Communication Pte. Ltd. SG
AS29119 AIRE NETWORKS DEL MEDITERRANEO SL UNIPERSONAL ES
AS9158 Telenor A/S DK
AS41549 Elektrizitaets- und Wasserwerk der Stadt Buchs SG CH

Upstreams

AS Number Description Country
AS59437 Northern Data AG DE
AS39249 Netassist International EOOD BG
AS29695 Lyse Tele AS NO
AS286 GTT Communications Inc. US
AS31133 PJSC MegaFon RU
AS15943 wilhelm.tel GmbH DE
AS4230 CLARO S.A. BR
AS56655 Gigahost AS NO
AS37468 Angola Cables AO
AS3303 Swisscom Schweiz AG CH
AS47692 Nessus GmbH AT
AS50673 Serverius Holding B.V. NL
AS6461 Zayo Bandwidth US
AS58453 China Mobile International Limited HK
AS35320 Eurotranstelecom Ltd UA
AS8434 Telenor Sverige AB SE
AS8758 Iway AG CH
AS9930 TT DOTCOM SDN BHD MY
AS35625 Eurofiber France SAS FR
AS25091 IP Max SA ZZ
AS6696 VERIXI SA BE
AS1836 green.ch AG CH
AS15412 Global Cloud Xchange GB
AS1299 Arelion Sweden AB SE
AS3257 GTT Communications Inc. US
AS8283 Netwerkvereniging Coloclue NL
AS209090 Association Stolon FR
AS39686 Eurofiber Nederland BV NL
AS8298 IPng Networks GmbH CH
AS7713 Telekomunikasi Indonesia PT ID
AS41913 Computerline GmbH CH
AS2516 KDDI CORPORATION JP
AS34177 Celeste SAS FR
AS34019 Hivane Association FR
AS4455 IX Reach Ltd GB
AS15958 CETIN Ltd. Belgrade RS
AS8896 GLOBALCONNECT AS NO
AS37100 SEACOM Limited MU
AS1257 Tele2 Sverige AB SE
AS9002 RETN Limited GB
AS37271 Workonline Communications Pty Ltd ZA
AS577 Bell Canada CA
AS13030 Init7 Switzerland Ltd. CH
AS41327 Fiber Telecom S.p.A. IT
AS29691 Nine Internet Solutions AG CH
AS29208 Quantcom, a.s. CZ
AS17676 SoftBank Corp. JP
AS20562 Broadband Hosting B.V. NL
AS3356 Level 3 Parent, LLC US
AS9009 M247 Europe SRL RO
AS12577 MMC GmbH AT
AS8708 DIGI ROMANIA S.A. RO
AS9498 Bharti Airtel Limited IN
AS21320 GEANT Vereniging NL
AS7195 EDGEUNO S.A.S CO
AS39392 SH.cz s.r.o. CZ
AS64049 Reliance Jio Infocomm Pte Ltd Singapore SG
AS197563 GLOBALNET UA LLC UA
AS49434 FBW NETWORKS SAS FR
AS39351 31173 Services AB SE

Downstreams

AS Number Description Country
AS25248 RADIOKOMUNIKACE a.s. CZ
AS199939 KeenSystems B.V. NL
AS48324 webgo GmbH DE
AS58057 Securebit AG CH
AS41998 NetCom BW GmbH DE
AS62119 Root SAS FR
AS50072 Talpa TV B.V. NL
AS205432 Graficheskiy COD LLC RU
AS210627 Grayshott Gigabit Limited GB
AS29001 Shaun O'Neil, trading as DMA Computer Services NL

Ready to get started?Get Started with IP Intelligence API Today

CTA Illustration

Frequently Asked Questions

ASN AS33891 is an Autonomous System Number used to identify a network for BGP internet routing.
AS33891 is listed under Core Backbone GmbH.
Peers are lateral network interconnections, upstreams are transit providers, and downstreams are customer networks receiving connectivity.
Routes and IP ranges are the network prefixes announced by the ASN on the internet and show the address space it originates.
WHOIS provides registration and contact context for ASN ownership, administration, and operational reference.
This page previews large ASN datasets. Use See more to load additional rows, and upgrade your plan to view complete peer, route, upstream, and downstream data.