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.

AS51738 FOP Masaltsev Denis Leonidovich

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

FOP Masaltsev Denis Leonidovich

UA 1 Routes

AS Data

AS51738

AS51738 – FOP Masaltsev Denis Leonidovich

AS Number	51738
AS Name	UKRAINKA-AS
Organization	FOP Masaltsev Denis Leonidovich(org-fmdl1-ripe)
Country	UA
Number of IPv4 Routes	1
Number of IPv6 Routes	0
ASN type	INDIVIDUAL
Allocation Status	ASSIGNED
Registry	RIPE
Date Allocated	2010-10-28

ASN Intelligence API for production workflows

Use ASN data for AS51738 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

Get ASN API Key ASN API Docs

IP Ranges

Route	Origin	Origin Name	ISP	# IPs
195.162.64.0/23	AS51738	FOP Masaltsev Denis Leonidovich	FOP Masaltsev Denis Leonidovich	512

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 'AS51738'

% Abuse contact for 'AS51738' is 'deneeska@gmail.com'

aut-num:        AS51738
as-name:        UKRAINKA-AS
org:            ORG-FMDL1-RIPE
import:         from AS20850 accept ANY
export:         to AS20850 announce AS51738
import:         from AS62206 accept ANY
export:         to AS62206 announce AS51738
import:         from AS35614 accept ANY
export:         to AS35614 announce AS51738
admin-c:        DMY440-RIPE
tech-c:         DMY440-RIPE
status:         ASSIGNED
mnt-by:         RIPE-NCC-END-MNT
mnt-by:         DEN-MNT
created:        2010-10-28T11:37:06Z
last-modified:  2025-11-05T07:46:45Z
source:         RIPE
sponsoring-org: ORG-DL9-RIPE

organisation:   ORG-FMDL1-RIPE
org-name:       FOP Masaltsev Denis Leonidovich
country:        UA
org-type:       OTHER
address:        Kharkiv
abuse-c:        AR18194-RIPE
mnt-ref:        DEN-MNT
mnt-by:         DEN-MNT
created:        2010-09-22T09:11:56Z
last-modified:  2024-12-27T18:06:18Z
source:         RIPE # Filtered

person:         Denys Masaltsev
address:        SK
mnt-by:         DEN-MNT
phone:          +421950574195
nic-hdl:        DMY440-RIPE
created:        1970-01-01T00:00:00Z
last-modified:  2024-12-27T17:53:29Z
source:         RIPE

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

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" : "AS51738",
    "as_name" : "UKRAINKA-AS",
    "status" : "ASSIGNED",
    "import" : [ "from AS20850 accept ANY", "from AS62206 accept ANY", "from AS35614 accept ANY" ],
    "export" : [ "to AS20850 announce AS51738", "to AS62206 announce AS51738", "to AS35614 announce AS51738" ],
    "organization" : "ORG-FMDL1-RIPE",
    "sponsoring_organization" : "ORG-DL9-RIPE",
    "admin_contacts" : [ "DMY440-RIPE" ],
    "tech_contacts" : [ "DMY440-RIPE" ],
    "mnt_by" : [ "RIPE-NCC-END-MNT", "DEN-MNT" ],
    "date_created" : "2010-10-28",
    "date_updated" : "2025-11-05",
    "source" : "RIPE"
  } ],
  "organization" : {
    "handle" : "ORG-FMDL1-RIPE",
    "name" : "FOP Masaltsev Denis Leonidovich",
    "type" : "OTHER",
    "address" : [ "Kharkiv" ],
    "city" : "Kharkiv",
    "country" : [ "UA" ],
    "abuse_contacts" : [ "AR18194-RIPE" ],
    "mnt_ref" : [ "DEN-MNT" ],
    "mnt_by" : [ "DEN-MNT" ],
    "date_created" : "2010-09-22",
    "date_updated" : "2024-12-27",
    "source" : "RIPE"
  },
  "administrative_contacts" : [ {
    "handle" : "DMY440-RIPE",
    "name" : "Denys Masaltsev",
    "address" : [ "SK" ],
    "state" : "SK",
    "phone" : [ "+421950574195" ],
    "mnt_by" : [ "DEN-MNT" ],
    "date_created" : "1970-01-01",
    "date_updated" : "2024-12-27",
    "source" : "RIPE"
  } ],
  "technical_contacts" : [ {
    "handle" : "DMY440-RIPE",
    "name" : "Denys Masaltsev",
    "address" : [ "SK" ],
    "state" : "SK",
    "phone" : [ "+421950574195" ],
    "mnt_by" : [ "DEN-MNT" ],
    "date_created" : "1970-01-01",
    "date_updated" : "2024-12-27",
    "source" : "RIPE"
  } ]
}

Peers

AS Number	Description	Country
AS62206	Pitline Ltd	UA
AS20850	Limited Liability Company KYIVSKI TELEKOMUNIKATSIYNI MEREZHI	UA
AS35614	Therecom Ltd	UA

Upstreams

AS Number	Description	Country
AS62206	Pitline Ltd	UA
AS35614	Therecom Ltd	UA

Frequently Asked Questions

What is ASN AS51738?

ASN AS51738 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS51738?

AS51738 is listed under FOP Masaltsev Denis Leonidovich.

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.