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AS51700 CTM Ltd | IPGeolocation.io

Q: Why is WHOIS data shown for an ASN?

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

ASN Lookup Tool

CTM Ltd ctm.ru

RU 1 Routes

AS Data

AS51700

AS51700 – CTM Ltd

AS Number	51700
AS Name	CTM_Ltd-AS
Organization	CTM Ltd (org-cl148-ripe)
Country	RU
Website	ctm.ru
Number of IPv4 Routes	1
Number of IPv6 Routes	0
ASN type	BUSINESS
Allocation Status	ASSIGNED
Registry	RIPE
Date Allocated	2010-10-21

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Use ASN data for AS51700 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
91.220.57.0/24	AS51700	CTM Ltd	CTM Ltd	256

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 'AS51357 - AS51817'

as-block:       AS51357 - AS51817
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:        2025-02-13T13:57:44Z
last-modified:  2025-02-13T13:57:44Z
source:         RIPE

% Information related to 'AS51700'

% Abuse contact for 'AS51700' is 'danil@ctm.ru'

aut-num:        AS51700
as-name:        CTM_Ltd-AS
org:            ORG-CL148-RIPE
import:         from AS20632 action pref=100; accept ANY
import:         from AS25408 action pref=100; accept ANY
export:         to AS20632 announce AS51700
export:         to AS25408 announce AS51700
admin-c:        AOD8-RIPE
tech-c:         BDR64-RIPE
status:         ASSIGNED
mnt-by:         RIPE-NCC-END-MNT
mnt-by:         CTM_ltd-mnt
created:        2010-10-21T13:35:29Z
last-modified:  2017-11-15T12:18:58Z
source:         RIPE
sponsoring-org: ORG-LL38-RIPE

organisation:   ORG-CL148-RIPE
org-name:       CTM Ltd
country:        RU
org-type:       other
address:        191036, St. Petersburg, ul. Poltavskaya, d.7
abuse-c:        AR19695-RIPE
mnt-ref:        CTM_ltd-mnt
mnt-by:         CTM_ltd-mnt
created:        2010-10-06T08:20:48Z
last-modified:  2022-12-01T16:20:29Z
source:         RIPE # Filtered

person:         Andreev O D
address:        191036, St. Petersburg, ul. Poltavskaya, d.7
phone:          +7-812-325-97-53
nic-hdl:        AOD8-RIPE
mnt-by:         CTM_ltd-mnt
created:        2010-10-06T08:22:41Z
last-modified:  2010-10-25T08:39:03Z
source:         RIPE

person:         Buskunov D R
address:        191036, St. Petersburg, ul. Poltavskaya, d.7
phone:          +7 812-325-97-47
nic-hdl:        BDR64-RIPE
mnt-by:         lidertelecom-mnt
created:        2014-03-31T13:17:49Z
last-modified:  2019-03-26T11:13:18Z
source:         RIPE # Filtered

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

Parsed Whois Response

{
  "status" : true,
  "whois_server" : "whois.ripe.net",
  "as_blocks" : [ {
    "as_block" : "AS51357 - AS51817",
    "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" : "2025-02-13",
    "date_updated" : "2025-02-13",
    "source" : "RIPE"
  } ],
  "aut_nums" : [ {
    "aut_num" : "AS51700",
    "as_name" : "CTM_Ltd-AS",
    "status" : "ASSIGNED",
    "import" : [ "from AS20632 action pref=100; accept ANY", "from AS25408 action pref=100; accept ANY" ],
    "export" : [ "to AS20632 announce AS51700", "to AS25408 announce AS51700" ],
    "organization" : "ORG-CL148-RIPE",
    "sponsoring_organization" : "ORG-LL38-RIPE",
    "admin_contacts" : [ "AOD8-RIPE" ],
    "tech_contacts" : [ "BDR64-RIPE" ],
    "mnt_by" : [ "RIPE-NCC-END-MNT", "CTM_ltd-mnt" ],
    "date_created" : "2010-10-21",
    "date_updated" : "2017-11-15",
    "source" : "RIPE"
  } ],
  "organization" : {
    "handle" : "ORG-CL148-RIPE",
    "name" : "CTM Ltd",
    "type" : "other",
    "address" : [ "191036, St. Petersburg, ul. Poltavskaya, d.7" ],
    "street" : "Ul. Poltavskaya D.7",
    "city" : "St. Petersburg",
    "zip_code" : "191036",
    "country" : [ "RU" ],
    "abuse_contacts" : [ "AR19695-RIPE" ],
    "mnt_ref" : [ "CTM_ltd-mnt" ],
    "mnt_by" : [ "CTM_ltd-mnt" ],
    "date_created" : "2010-10-06",
    "date_updated" : "2022-12-01",
    "source" : "RIPE"
  },
  "administrative_contacts" : [ {
    "handle" : "AOD8-RIPE",
    "name" : "Andreev O D",
    "address" : [ "191036, St. Petersburg, ul. Poltavskaya, d.7" ],
    "street" : "Ul. Poltavskaya D.7",
    "city" : "St. Petersburg",
    "zip_code" : "191036",
    "phone" : [ "+7-812-325-97-53" ],
    "mnt_by" : [ "CTM_ltd-mnt" ],
    "date_created" : "2010-10-06",
    "date_updated" : "2010-10-25",
    "source" : "RIPE"
  } ],
  "technical_contacts" : [ {
    "handle" : "BDR64-RIPE",
    "name" : "Buskunov D R",
    "address" : [ "191036, St. Petersburg, ul. Poltavskaya, d.7" ],
    "street" : "Ul. Poltavskaya D.7",
    "city" : "St. Petersburg",
    "zip_code" : "191036",
    "phone" : [ "+7 812-325-97-47" ],
    "mnt_by" : [ "lidertelecom-mnt" ],
    "date_created" : "2014-03-31",
    "date_updated" : "2019-03-26",
    "source" : "RIPE"
  } ]
}

Peers

AS Number	Description	Country
AS9002	RETN Limited	GB
AS20632	PJSC MegaFon	RU
AS25408	JSC ER Telecom Holding	RU
AS57304	JSC "RetnNet"	RU

Upstreams

AS Number	Description	Country
AS9002	RETN Limited	GB
AS20632	PJSC MegaFon	RU

Frequently Asked Questions

What is ASN AS51700?

ASN AS51700 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS51700?

AS51700 is listed under CTM Ltd.

What do peers, upstreams, and downstreams mean?

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 included here?

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

How can I access full ASN table data?

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.