Use the AS Network WHOIS utility to look up the organisation responsible for an AS network.

About the AS Network WHOIS Lookup tool

Network packets (traffic) are transmitted over the Internet by traversing multiple networks run by different organisations - known as Autonomous Networks. Each of these organisations is assigned a number for their network, known as an ASN (Autonomous System Number.)

Each network peers with other networks, sharing the AS numbers of the networks they peer with.

You can perform a query known as "WHOIS" to identify which organisation operates a particular AS network.


Use Cases

Use the AS Network WHOIS tool on Solid Tools for Developers to:

  • Identify which organisation is responsible for an ASN
  • Find out contacts to report abuse or technical problems with an ASN

Usage

Enter an ASN in the "AS Number" field.


Results

The raw output from the WHOIS database will be displayed.

The following example shows a WHOIS lookup for AS31727, the AS number allocated to Node4 - the data centre that hosts the server running Solid Tools for Developers.

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

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

% Information related to 'AS31620 - AS31743'

as-block:       AS31620 - AS31743
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:        2010-05-11T11:46:50Z
last-modified:  2014-02-24T13:15:17Z
source:         RIPE

% Information related to 'AS31727'

% Abuse contact for 'AS31727' is 'abuse@node4.co.uk'

aut-num:        AS31727
as-name:        NODE4-AS
remarks:        ******************************************************
remarks:        * ABUSE REPORTS *
remarks:        * E-mail: abuse at node4.co.uk *
remarks:        ******************************************************
remarks:        * NOC Contact Details *
remarks:        * Email: support at node4.co.uk *
remarks:        ******************************************************
remarks:        ****************************************************
remarks:        * Transit Providers *
remarks:        ****************************************************
remarks:        ** XchangePointMLP **
import:         from AS21356 accept ANY
export:         to AS21356 announce AS-NODE4
remarks:        ** Level3 **
import:         from AS3356 accept ANY
export:         to AS3356 announce AS-NODE4
remarks:        ** PacketExchange Express **
import:         from AS21493 accept ANY
export:         to AS21493 announce AS-NODE4
remarks:        ** AboveNET MFN**
import:         from AS6461 accept ANY
export:         to AS6461 announce AS-NODE4
remarks:        ** Teleglobe **
import:         from AS6453 accept ANY
export:         to AS6453 announce AS-NODE4
remarks:        ****************************************************
remarks:        * LINX Peering *
remarks:        ****************************************************
import:         from AS42 accept AS-PCH
export:         to AS42 announce AS-NODE4
import:         from AS786 accept AS-JANET
export:         to AS786 announce AS-NODE4
import:         from AS1267 accept AS-INFOSTRADA
export:         to AS1267 announce AS-NODE4
import:         from AS1290 accept AS-PSINETUK
export:         to AS1290 announce AS-NODE4
import:         from AS2119 accept AS-TELENOR
export:         to AS2119 announce AS-NODE4
import:         from AS2529 accept AS-DEMON
export:         to AS2529 announce AS-NODE4
import:         from AS2686 accept AS-IGNEMEA
export:         to AS2686 announce AS-NODE4
import:         from AS2818 accept AS-BBC
export:         to AS2818 announce AS-NODE4
import:         from AS2856 accept AS-BTGB
export:         to AS2856 announce AS-NODE4
import:         from AS3209 accept AS-ARCORGLOBAL
export:         to AS3209 announce AS-NODE4
import:         from AS3213 accept AS-BOGONS
export:         to AS3213 announce AS-NODE4
import:         from AS3246 accept AS-TELEONEEUROPE
export:         to AS3246 announce AS-NODE4
import:         from AS3249 accept AS-ESTPAK
export:         to AS3249 announce AS-NODE4
import:         from AS3741 accept AS-IS
export:         to AS3741 announce AS-NODE4
remarks:
import:         from AS3856 accept AS-PCH
export:         to AS3856 announce AS-NODE4
remarks:
import:         from AS4589 accept AS-EASYNET
export:         to AS4589 announce AS-NODE4
remarks:
import:         from AS4788 accept AS4788
export:         to AS4788 announce AS-NODE4
remarks:
import:         from AS5089 accept AS-NTLI
export:         to AS5089 announce AS-NODE4
remarks:
import:         from AS5388 accept AS-ENERGIS
export:         to AS5388 announce AS-NODE4
remarks:
import:         from AS5413 accept AS-PIPEX
export:         to AS5413 announce AS-NODE4
remarks:
import:         from AS5430 accept AS-FREENETDE
export:         to AS5430 announce AS-NODE4
remarks:
import:         from AS5459 accept AS-LINX
export:         to AS5459 announce AS-NODE4
remarks:
import:         from AS5462 accept AS-CABLEINET
export:         to AS5462 announce AS-NODE4
remarks:
import:         from AS5466 accept AS-EIRCOM
export:         to AS5466 announce AS-NODE4
remarks:
import:         from AS5503 accept AS-RMIFL
export:         to AS5503 announce AS-NODE4
remarks:
import:         from AS5552 accept AS-DIALNET
export:         to AS5552 announce AS-NODE4
remarks:
import:         from AS5557 accept AS-ZOO
export:         to AS5557 announce AS-NODE4
remarks:
import:         from AS5588 accept AS-GTS-CE
export:         to AS5588 announce AS-NODE4
remarks:
import:         from AS5669 accept AS-PSIVIA
export:         to AS5669 announce AS-NODE4
remarks:
import:         from AS6067 accept AS-ONYX
export:         to AS6067 announce AS-NODE4
remarks:
import:         from AS6327 accept AS-BIGPIPE
export:         to AS6327 announce AS-NODE4
remarks:
import:         from AS6432 accept AS6432
export:         to AS6432 announce AS-NODE4
remarks:
import:         from AS6656 accept AS-STG
export:         to AS6656 announce AS-NODE4
remarks:
import:         from AS6661 accept AS-PTLU
export:         to AS6661 announce AS-NODE4
remarks:
import:         from AS6677 accept AS-ICENET
export:         to AS6677 announce AS-NODE4
remarks:
import:         from AS6730 accept AS-SUNRISE
export:         to AS6730 announce AS-NODE4
remarks:
remarks:
import:         from AS6774 accept AS-BELBONETOPEERS
export:         to AS6774 announce AS-NODE4
remarks:
import:         from AS6779 accept AS6779
export:         to AS6779 announce AS-NODE4
remarks:
import:         from AS6805 accept AS-TDDE
export:         to AS6805 announce AS-NODE4
remarks:
import:         from AS6871 accept AS-PLUSNETUK
export:         to AS6871 announce AS-NODE4
remarks:
import:         from AS6939 accept AS-HURRICANE
export:         to AS6939 announce AS-NODE4
remarks:
import:         from AS7575 accept AS-AARNET
export:         to AS7575 announce AS-NODE4
remarks:
import:         from AS8068 accept AS-MICROSOFTEU
export:         to AS8068 announce AS-NODE4
remarks:
import:         from AS8359 accept AS-MTU
export:         to AS8359 announce AS-NODE4
remarks:
import:         from AS8422 accept AS-NETCOLOGNE
export:         to AS8422 announce AS-NODE4
remarks:
import:         from AS8447 accept AS-PTA
export:         to AS8447 announce AS-NODE4
remarks:
import:         from AS8426 accept AS-CLARANET
export:         to AS8426 announce AS-NODE4
remarks:
import:         from AS8468 accept AS-ENTANET
export:         to AS8468 announce AS-NODE4
remarks:
import:         from AS8546 accept AS-YOURCOMMS
export:         to AS8546 announce AS-NODE4
remarks:
import:         from AS8553 accept AS-AVENSYS
export:         to AS8553 announce AS-NODE4
remarks:
import:         from AS8560 accept AS-1AND1
export:         to AS8560 announce AS-NODE4
remarks:
import:         from AS8586 accept AS-REDNET
export:         to AS8586 announce AS-NODE4
remarks:
import:         from AS8607 accept AS-ATLAS
export:         to AS8607 announce AS-NODE4
remarks:
import:         from AS8657 accept AS-CPRM
export:         to AS8657 announce AS-NODE4
remarks:
import:         from AS8683 accept AS-NOMINET
export:         to AS8683 announce AS-NODE4
remarks:
import:         from AS8708 accept AS-RDSNET
export:         to AS8708 announce AS-NODE4
remarks:
import:         from AS8844 accept AS-COMMUNITY
export:         to AS8844 announce AS-NODE4
remarks:
import:         from AS8851 accept AS-INWEB
export:         to AS8851 announce AS-NODE4
remarks:
import:         from AS8897 accept AS-MISTRAL
export:         to AS8897 announce AS-NODE4
remarks:
import:         from AS8912 accept AS-NETBENEFIT
export:         to AS8912 announce AS-NODE4
remarks:
import:         from AS8966 accept AS-EMIX
export:         to AS8966 announce AS-NODE4
remarks:
import:         from AS9031 accept AS-EDPNETEU
export:         to AS9031 announce AS-NODE4
remarks:
import:         from AS9044 accept AS-SOLNET
export:         to AS9044 announce AS-NODE4
remarks:
import:         from AS9063 accept AS-SAARGATE
export:         to AS9063 announce AS-NODE4
remarks:
import:         from AS9145 accept AS-EWETEL
export:         to AS9145 announce AS-NODE4
remarks:
import:         from AS9153 accept AS-BURSTFIRE
export:         to AS9153 announce AS-NODE4
remarks:
import:         from AS9318 accept AS9318
export:         to AS9318 announce AS-NODE4
remarks:
import:         from AS12390 accept AS-KINGSTONUK
export:         to AS12390 announce AS-NODE4
remarks:
import:         from AS12399 accept AS-SPXS
export:         to AS12399 announce AS-NODE4
remarks:
import:         from AS12496 accept AS-IDNET
export:         to AS12496 announce AS-NODE4
remarks:
import:         from AS12513 accept AS-ECLIPSE
export:         to AS12513 announce AS-NODE4
remarks:
import:         from AS12552 accept AS-IPO-EU
export:         to AS12552 announce AS-NODE4
remarks:
import:         from AS12713 accept AS-OTEGLOBE
export:         to AS12713 announce AS-NODE4
remarks:
import:         from AS12932 accept AS-TELETEXT
export:         to AS12932 announce AS-NODE4
remarks:
import:         from AS12989 accept AS-EWEKA
export:         to AS12989 announce AS-NODE4
remarks:
import:         from AS13030 accept AS-INIT7
export:         to AS13030 announce AS-NODE4
remarks:
import:         from AS13037 accept AS-ZEN
export:         to AS13037 announce AS-NODE4
remarks:
import:         from AS13122 accept AS13122
export:         to AS13122 announce AS-NODE4
remarks:
import:         from AS13184 accept AS-HANSENET
export:         to AS13184 announce AS-NODE4
remarks:
import:         from AS13193 accept AS-NERIM
export:         to AS13193 announce AS-NODE4
remarks:
import:         from AS13213 accept AS-UK2NET
export:         to AS13213 announce AS-NODE4
remarks:
import:         from AS13285 accept AS-OPAL
export:         to AS13285 announce AS-NODE4
remarks:
import:         from AS14492 accept AS-DATAPIPE
export:         to AS14492 announce AS-NODE4
remarks:
import:         from AS15444 accept AS-NETSERVICES
export:         to AS15444 announce AS-NODE4
remarks:
import:         from AS15557 accept AS-LDCOMNET
export:         to AS15557 announce AS-NODE4
remarks:
import:         from AS15635 accept AS-YAHOOEU
export:         to AS15635 announce AS-NODE4
remarks:
import:         from AS15766 accept AS15766
export:         to AS15766 announce AS-NODE4
remarks:
import:         from AS15772 accept AS-WNET
export:         to AS15772 announce AS-NODE4
remarks:
import:         from AS15773 accept AS-INCLARITY
export:         to AS15773 announce AS-NODE4
remarks:
import:         from AS15830 accept AS-TELECITYLON
export:         to AS15830 announce AS-NODE4
remarks:
import:         from AS15915 accept AS-IBERCOM
export:         to AS15915 announce AS-NODE4
remarks:
import:         from AS15988 accept AS-AKHTERNET
export:         to AS15988 announce AS-NODE4
remarks:
import:         from AS16030 accept AS-ALTECOM
export:         to AS16030 announce AS-NODE4
remarks:
import:         from AS16034 accept AS-KEME
export:         to AS16034 announce AS-NODE4
remarks:
import:         from AS16276 accept AS-OVH
export:         to AS16276 announce AS-NODE4
remarks:
import:         from AS16339 accept AS16339
export:         to AS16339 announce AS-NODE4
remarks:
import:         from AS16353 accept AS-MERULA
export:         to AS16353 announce AS-NODE4
remarks:
import:         from AS18922 accept AS-AFOLITES
export:         to AS18922 announce AS-NODE4
remarks:
import:         from AS19151 accept AS19151
export:         to AS19151 announce AS-NODE4
remarks:
import:         from AS20485 accept AS-TTK
export:         to AS20485 announce AS-NODE4
remarks:
import:         from AS20500 accept AS-GRIFFIN
export:         to AS20500 announce AS-NODE4
remarks:
import:         from AS20547 accept AS-UKS
export:         to AS20547 announce AS-NODE4
remarks:
import:         from AS20679 accept AS-HSO
export:         to AS20679 announce AS-NODE4
remarks:
import:         from AS20718 accept AS-ARSYSINTERNET
export:         to AS20718 announce AS-NODE4
remarks:
import:         from AS20799 accept AS-DATANETUK
export:         to AS20799 announce AS-NODE4
remarks:
import:         from AS20834 accept AS-CALADAN
export:         to AS20834 announce AS-NODE4
remarks:
import:         from AS20923 accept AS-SKYMARKET
export:         to AS20923 announce AS-NODE4
remarks:
import:         from AS20940 accept AS-AKAMAI
export:         to AS20940 announce AS-NODE4
remarks:
import:         from AS20976 accept AS-HOTLINKS-LINX
export:         to AS20976 announce AS-NODE4
remarks:
import:         from AS21099 accept AS-BARRYSWORLD-LINX
export:         to AS21099 announce AS-NODE4
remarks:
import:         from AS21345 accept AS21345
export:         to AS21345 announce AS-NODE4
remarks:
import:         from AS21396 accept AS-NETCONNEX
export:         to AS21396 announce AS-NODE4
remarks:
import:         from AS22822 accept AS-LLNW
export:         to AS22822 announce AS-NODE4
remarks:
import:         from AS24851 accept AS-NETCETERA
export:         to AS24851 announce AS-NODE4
remarks:
import:         from AS25041 accept AS-BRIGHTVIEW
export:         to AS25041 announce AS-NODE4
remarks:
import:         from AS25137 accept AS-NFSi
export:         to AS25137 announce AS-NODE4
remarks:
import:         from AS25180 accept AS-EXPONENTIAL-E
export:         to AS25180 announce AS-NODE4
remarks:
import:         from AS25310 accept AS25310
export:         to AS25310 announce AS-NODE4
remarks:
import:         from AS25462 accept AS-RETN
export:         to AS25462 announce AS-NODE4
remarks:
import:         from AS25463 accept AS-COREISP
export:         to AS25463 announce AS-NODE4
remarks:
import:         from AS25577 accept AS-C4L
export:         to AS25577 announce AS-NODE4
remarks:
import:         from AS29006 accept AS-POBOX
export:         to AS29006 announce AS-NODE4
remarks:
import:         from AS29009 accept AS-UKBB
export:         to AS29009 announce AS-NODE4
remarks:
import:         from AS29017 accept AS-GYRON
export:         to AS29017 announce AS-NODE4
remarks:
remarks:
import:         from AS29550 accept AS-POUNDHOST
export:         to AS29550 announce AS-NODE4
remarks:
import:         from AS29636 accept AS-CATALYST2
export:         to AS29636 announce AS-NODE4
remarks:
import:         from AS30740 accept AS-EXA
export:         to AS30740 announce AS-NODE4
remarks:
import:         from AS30844 accept AS-ECS
export:         to AS30844 announce AS-NODE4
remarks:
import:         from AS30914 accept AS-IOKO
export:         to AS30914 announce AS-NODE4
remarks:
import:         from AS31216 accept AS-BSOCOM
export:         to AS31216 announce AS-NODE4
remarks:
import:         from AS31312 accept AS31312
export:         to AS31312 announce AS-NODE4
remarks:
import:         from AS31458 accept AS-SMART
export:         to AS31458 announce AS-NODE4
remarks:
import:         from AS32787 accept AS-PROLE
export:         to AS32787 announce AS-NODE4
remarks:
import:         from AS33968 accept AS-INTENG
export:         to AS33968 announce AS-NODE4
remarks:
import:         from AS34245 accept AS-MAGNETLOCAL
export:         to AS34245 announce AS-NODE4
remarks:
import:         from AS34270 accept AS-INETC
export:         to AS34270 announce AS-NODE4
remarks:
import:         from AS34305 accept AS-EUROACCESS
export:         to AS34305 announce AS-NODE4
remarks:
import:         from AS34746 accept AS-EATONKAYE
export:         to AS34746 announce AS-NODE4
remarks:
remarks:
import:         from AS34790 accept AS-WAVEWORKS
export:         to AS34790 announce AS-NODE4
remarks:
import:         from AS35028 accept AS-MULTIPLAY
export:         to AS35028 announce AS-NODE4
remarks:
import:         from AS35591 accept AS-PROVIDERONE
export:         to AS35591 announce AS-NODE4
remarks:
import:         from AS39326 accept AS-GOSCOMB
export:         to AS39326 announce AS-NODE4
remarks:
import:         from AS39621 accept AS-STREAMUK
export:         to AS39621 announce AS-NODE4
remarks:
import:         from AS39757 accept AS-UKGRID
export:         to AS39757 announce AS-NODE4
remarks:
import:         from AS41012 accept AS-THECLOUD
export:         to AS41012 announce AS-NODE4
remarks:
import:         from AS42689 accept AS-INUK
export:         to AS42689 announce AS-NODE4
remarks:
remarks:        ****************************************************
remarks:        * Downstream AS *
remarks:        ****************************************************
remarks:
remarks:        ** ClicknBuy **
import:         from AS15838 accept ANY
export:         to AS15838 announce ANY
remarks:        ** BBUK **
import:         from AS8621 accept ANY
export:         to AS8621 announce ANY
remarks:        ** HATandFEET **
import:         from AS196671 accept ANY
export:         to AS196671 announce ANY
remarks:        ** KENCOMP **
import:         from AS-KENCOMP accept ANY
export:         to AS-KENCOMP announce ANY
remarks:
remarks:        ****************************************************
remarks:        * Node4 operates an open peering policy please *
remarks:        * email peering@node4.co.uk *
remarks:        ****************************************************
remarks:        * Peering at LINX *
remarks:        * AS Number: 31727 *
remarks:        * AS Macro: AS-NODE4 *
remarks:        * IP Address: 195.66.224.135 *
remarks:        ****************************************************
remarks:        * Peering at Xchange Point *
remarks:        * AS Number: 31727 *
remarks:        * AS Macro: AS-NODE4 *
remarks:        * IP Address: 83.245.126.37 *
remarks:        ****************************************************
org:            ORG-NL21-RIPE
admin-c:        NFNR-RIPE
tech-c:         NFNR-RIPE
status:         ASSIGNED
mnt-by:         RIPE-NCC-END-MNT
mnt-by:         N4-NOC
created:        2004-07-26T15:22:14Z
last-modified:  2018-09-04T10:03:55Z
source:         RIPE # Filtered

organisation:   ORG-NL21-RIPE
org-name:       Node4 Limited
org-type:       LIR
address:        Millennium Way Pride Park
address:        DE24 8HZ
address:        Derby
address:        UNITED KINGDOM
phone:          +448451232222
fax-no:         +448451232221
admin-c:        AG3192-RIPE
admin-c:        AB18163-RIPE
admin-c:        JH2806-RIPE
abuse-c:        NA4119-RIPE
mnt-ref:        RIPE-NCC-HM-MNT
mnt-ref:        N4-NOC
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         N4-NOC
created:        2004-04-28T11:02:58Z
last-modified:  2016-05-31T12:45:41Z
source:         RIPE # Filtered

role:           Node4 Network Role
address:        Node4 Ltd
address:        Millennium Way
address:        Pride Park
address:        Derby
address:        DE24 8HZ
remarks:        *******************************************************
remarks:        * Node4 has an open peering policy and are        *
remarks:        * located at LINX and Xchange Point   *
remarks:        * t: +44 845 123 2222          *
remarks:        * f: +44 845 123 2221          *
remarks:        * w: http://www.node4.co.uk         *
remarks:        * e: peering at node4.co.uk         *
remarks:        *******************************************************
phone:          +44 845 123 2222
fax-no:         +44 845 123 2221
remarks:        trouble:      Send ABUSE REPORTS to abuse at node4.co.uk
admin-c:        AG3192-RIPE
tech-c:         AG3192-RIPE
nic-hdl:        NFNR-RIPE
mnt-by:         N4-NOC
created:        2004-05-31T17:30:48Z
last-modified:  2011-01-18T13:13:56Z
source:         RIPE # Filtered
abuse-mailbox:  abuse@node4.co.uk

% This query was served by the RIPE Database Query Service version 1.92.6 (HEREFORD)

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