ASN Lookup Tool

MAREK BZDZIUCH trading as CYFROTEL Sp. J. cyfrotel.pl PL PL 9 Routes

AS Data

AS203937

AS203937MAREK BZDZIUCH trading as CYFROTEL Sp. J.

AS Number 203937
AS Name Cyfrotel
Organization MAREK BZDZIUCH trading as CYFROTEL Sp. J. (org-csjm2-ripe)
Country PL
Website cyfrotel.pl
Number of IPv4 Routes 8
Number of IPv6 Routes 1
ASN type ISP
Allocation Status ASSIGNED
Registry RIPE
Date Allocated 2015-10-01

ASN Intelligence API for production workflows

Use ASN data for AS203937 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route # IPs
185.131.242.0/24 256
185.216.172.0/24 256
2a06:dec0::/32 ~79×10²⁷
185.131.243.0/24 256
185.253.233.0/24 256
185.131.240.0/23 512
185.119.120.0/22 1024
185.125.4.0/24 256
194.42.118.0/23 512

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 'AS203889 - AS203938'

as-block:       AS203889 - AS203938
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:        2026-03-05T15:29:31Z
last-modified:  2026-03-05T15:29:31Z
source:         RIPE

% Information related to 'AS203937'

% Abuse contact for 'AS203937' is 'admin@cyfrotel.pl'

aut-num:        AS203937
as-name:        Cyfrotel
org:            ORG-CSJM2-RIPE
import:         from AS50607 accept ANY
export:         to AS50607 announce as-cyfrotel
import:         from AS62047 accept ANY
export:         to AS62047 announce as-cyfrotel
import:         from AS201054 accept ANY
export:         to AS201054 announce as-cyfrotel
import:         from AS197294 accept ANY
export:         to AS197294 announce ANY
admin-c:        MB40321-RIPE
tech-c:         MB40321-RIPE
status:         ASSIGNED
mnt-by:         RIPE-NCC-END-MNT
mnt-by:         pl-cyfrotel-1-mnt
created:        2015-10-01T08:31:39Z
last-modified:  2025-03-21T13:18:00Z
source:         RIPE

organisation:   ORG-CSJM2-RIPE
org-name:       MAREK BZDZIUCH trading as CYFROTEL Sp. J.
country:        PL
org-type:       LIR
address:        ul. Tadeusza Kosciuszki 79
address:        23-400
address:        Bilgoraj
address:        POLAND
phone:          +48845348000
geoloc:         50.529305 22.7155843
language:       PL
admin-c:        MB40321-RIPE
admin-c:        MU1759-RIPE
tech-c:         MB40321-RIPE
tech-c:         MU1759-RIPE
abuse-c:        AR33658-RIPE
mnt-ref:        pl-cyfrotel-1-mnt
mnt-ref:        pl-zfix-1-mnt
mnt-ref:        RIPE-NCC-HM-MNT
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         pl-cyfrotel-1-mnt
created:        2015-09-29T14:27:09Z
last-modified:  2025-09-02T13:00:56Z
source:         RIPE # Filtered

person:         Marek Bzdziuch
address:        CYFROTEL
address:        ul. Tadeusza Kosciuszki 79
address:        23-400
address:        Bilgoraj
address:        POLAND
phone:          +48731731261
nic-hdl:        MB40321-RIPE
mnt-by:         pl-cyfrotel-1-mnt
created:        2015-09-29T14:27:07Z
last-modified:  2025-09-02T12:56:36Z
source:         RIPE

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

Parsed Whois Response

Peers

AS Number Description Country
AS24740 NTT DATA Business Solutions sp. z o.o. PL
AS24482 SG.GS SG
AS1820 WNET TELECOM USA Corp. US
AS50607 Stowarzyszenie e-Poludnie PL
AS62081 Stowarzyszenie e-Poludnie PL
AS6204 ZET.NET IP Transit RO
AS51465 M3.NET Sp. zoo PL
AS50607 Stowarzyszenie e Poludnie PL
AS62081 Stowarzyszenie e Poludnie PL
AS28917 Fiord Networks, UAB LT

Upstreams

AS Number Description Country
AS24482 SG.GS SG
AS201054 Stowarzyszenie e Poludnie PL
AS6204 ZET.NET IP Transit RO
AS62081 Stowarzyszenie e Poludnie PL
AS50607 Stowarzyszenie e Poludnie PL
AS29535 Orange Polska Spolka Akcyjna PL
AS5617 Orange Polska Spolka Akcyjna PL

Downstreams

AS Number Description Country
AS20804 Exatel S.A. PL

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Frequently Asked Questions

ASN AS203937 is an Autonomous System Number used to identify a network for BGP internet routing.
AS203937 is listed under MAREK BZDZIUCH trading as CYFROTEL Sp. J..
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.