ASN AS51128 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS51128?

AS51128 is listed under Holon SAS.

What do peers, upstreams, and downstreams mean in ASN data?

Peers are lateral network interconnections, upstreams are transit providers, and downstreams are customer networks receiving connectivity.

What are routes and IP ranges for an ASN?

Routes and IP ranges are the network prefixes announced by the ASN on the internet and show the address space it originates.

Why is WHOIS data shown for an ASN?

WHOIS data provides registration and contact context for ASN ownership, administration, and operational reference.

How can I access the full ASN tables?

The page shows a preview of large ASN datasets. Use the page controls to load more rows, and upgrade to a paid plan for complete access.

AS51128 Holon SAS | IPGeolocation.io

ASN Lookup Tool

Holon SAS izzycom.fr

FR 1 Routes

AS Data

AS51128

AS51128 – Holon SAS

AS Number	51128
AS Name	LGSI-AS
Organization	Holon SAS (org-os303-ripe)
Country	FR
Website	izzycom.fr
Number of IPv4 Routes	1
Number of IPv6 Routes	0
ASN type	BUSINESS
Allocation Status	ASSIGNED
Registry	RIPE
Date Allocated	2010-06-07

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
178.250.104.0/21	AS51128	Holon SAS	Holon SAS	2048

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 'AS50893 - AS51311'

as-block:       AS50893 - AS51311
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:        2024-12-10T14:54:30Z
last-modified:  2024-12-10T14:54:30Z
source:         RIPE

% Information related to 'AS51128'

% Abuse contact for 'AS51128' is 'abuse@izzycom.fr'

aut-num:        AS51128
as-name:        LGSI-AS
org:            ORG-OS303-RIPE
import:         from AS31167 accept ANY
import:         from AS3356 accept ANY
import:         from AS8218 accept ANY
export:         to AS31167 announce AS51128
export:         to AS3356 announce AS51128
export:         to AS8218 announce AS51128
admin-c:        PA10451-RIPE
admin-c:        NI570-RIPE
tech-c:         PA10451-RIPE
status:         ASSIGNED
mnt-by:         RIPE-NCC-END-MNT
mnt-by:         mnt-fr-odena-1
created:        2010-06-07T09:02:23Z
last-modified:  2024-02-12T15:07:05Z
source:         RIPE
abuse-c:        AR15291-RIPE

organisation:   ORG-OS303-RIPE
org-name:       Holon SAS
country:        FR
org-type:       LIR
address:        5 all�e de l'Abb� Gr�goire
address:        29000
address:        QUIMPER
address:        FRANCE
phone:          +33298100720
admin-c:        PA10451-RIPE
tech-c:         PA10451-RIPE
abuse-c:        AR61211-RIPE
mnt-ref:        mnt-fr-odena-1
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         mnt-fr-odena-1
created:        2020-10-22T07:52:42Z
last-modified:  2025-11-25T13:07:33Z
source:         RIPE # Filtered

role:           PRESIDENT
address:        5 all�e de l'Abb� Gr�goire
address:        29000
address:        QUIMPER
address:        FRANCE
phone:          +33298100720
nic-hdl:        PA10451-RIPE
mnt-by:         mnt-fr-odena-1
created:        2020-10-22T07:52:41Z
last-modified:  2020-10-22T07:52:41Z
source:         RIPE # Filtered

person:         NOC HOLON
address:        5 All. Abbe Gregoire 29000 QUIMPER FRANCE
phone:          +33 2 98 10 07 20
nic-hdl:        NI570-RIPE
mnt-by:         IZZY-MNT
created:        2012-04-09T13:34:06Z
last-modified:  2026-03-13T19:43:57Z
source:         RIPE # Filtered

% This query was served by the RIPE Database Query Service version 1.121.2 (BUSA)

Parsed Whois Response

{
  "status" : true,
  "whois_server" : "whois.ripe.net",
  "as_blocks" : [ {
    "as_block" : "AS50893 - AS51311",
    "description" : [ "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" ],
    "date_created" : "2024-12-10",
    "date_updated" : "2024-12-10",
    "source" : "RIPE"
  } ],
  "aut_nums" : [ {
    "aut_num" : "AS51128",
    "as_name" : "LGSI-AS",
    "status" : "ASSIGNED",
    "import" : [ "from AS31167 accept ANY", "from AS3356 accept ANY", "from AS8218 accept ANY" ],
    "export" : [ "to AS31167 announce AS51128", "to AS3356 announce AS51128", "to AS8218 announce AS51128" ],
    "organization" : "ORG-OS303-RIPE",
    "admin_contacts" : [ "PA10451-RIPE", "NI570-RIPE" ],
    "tech_contacts" : [ "PA10451-RIPE" ],
    "abuse_contacts" : [ "AR15291-RIPE" ],
    "mnt_by" : [ "RIPE-NCC-END-MNT", "mnt-fr-odena-1" ],
    "date_created" : "2010-06-07",
    "date_updated" : "2024-02-12",
    "source" : "RIPE"
  } ],
  "organization" : {
    "handle" : "ORG-OS303-RIPE",
    "name" : "Holon SAS",
    "type" : "LIR",
    "address" : [ "5 all?e de l'Abb? Gr?goire", "29000", "QUIMPER", "FRANCE" ],
    "street" : "All?e De L'abb? Gr?goire",
    "city" : "Quimper",
    "zip_code" : "29000",
    "country" : [ "FR" ],
    "phone" : [ "+33298100720" ],
    "admin_contacts" : [ "PA10451-RIPE" ],
    "tech_contacts" : [ "PA10451-RIPE" ],
    "abuse_contacts" : [ "AR61211-RIPE" ],
    "mnt_ref" : [ "mnt-fr-odena-1" ],
    "mnt_by" : [ "RIPE-NCC-HM-MNT", "mnt-fr-odena-1" ],
    "date_created" : "2020-10-22",
    "date_updated" : "2025-11-25",
    "source" : "RIPE",
    "addressCountry" : "FRANCE"
  },
  "administrative_contacts" : [ {
    "handle" : "PA10451-RIPE",
    "name" : "PRESIDENT",
    "address" : [ "5 all?e de l'Abb? Gr?goire", "29000", "QUIMPER", "FRANCE" ],
    "street" : "All?e De L'abb? Gr?goire",
    "city" : "Quimper",
    "zip_code" : "29000",
    "country" : "FRANCE",
    "phone" : [ "+33298100720" ],
    "mnt_by" : [ "mnt-fr-odena-1" ],
    "date_created" : "2020-10-22",
    "date_updated" : "2020-10-22",
    "source" : "RIPE",
    "addressCountry" : "FRANCE"
  }, {
    "handle" : "NI570-RIPE",
    "name" : "NOC HOLON",
    "address" : [ "5 All. Abbe Gregoire 29000 QUIMPER FRANCE" ],
    "street" : "All. Abbe Gregoire",
    "city" : "Quimper",
    "zip_code" : "29000",
    "country" : "FRANCE",
    "phone" : [ "+33 2 98 10 07 20" ],
    "mnt_by" : [ "IZZY-MNT" ],
    "date_created" : "2012-04-09",
    "date_updated" : "2026-03-13",
    "source" : "RIPE",
    "addressCountry" : "FRANCE"
  } ],
  "technical_contacts" : [ {
    "handle" : "PA10451-RIPE",
    "name" : "PRESIDENT",
    "address" : [ "5 all?e de l'Abb? Gr?goire", "29000", "QUIMPER", "FRANCE" ],
    "street" : "All?e De L'abb? Gr?goire",
    "city" : "Quimper",
    "zip_code" : "29000",
    "country" : "FRANCE",
    "phone" : [ "+33298100720" ],
    "mnt_by" : [ "mnt-fr-odena-1" ],
    "date_created" : "2020-10-22",
    "date_updated" : "2020-10-22",
    "source" : "RIPE",
    "addressCountry" : "FRANCE"
  } ]
}

Peers

AS Number	Description	Country
AS31167	AXIONE S.A.S.	FR
AS57943	Holon SAS	FR
AS8218	operated Upstreamnet gmbh	FR
AS3356	Level 3 Parent, LLC	US

Upstreams

AS Number	Description	Country
AS31167	AXIONE S.A.S.	FR
AS57943	Holon SAS	FR