ASN Lookup Tool

zhenyun sun as204921.net GB GB 10 Routes

AS Data

AS204921

AS204921zhenyun sun

AS Number 204921
AS Name YunZheng-Network
Organization zhenyun sun (org-zs89-ripe)
Country GB
Website as204921.net
Number of IPv4 Routes 3
Number of IPv6 Routes 7
ASN type ISP
Allocation Status ASSIGNED
Registry RIPE
Date Allocated 2025-10-10

ASN Intelligence API for production workflows

Use ASN data for AS204921 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

IP Ranges

Route # IPs
142.249.114.0/24 256
2a0e:aa07:e252::/48 ~1×10²⁴
2a0e:aa07:e257::/48 ~1×10²⁴
142.249.115.0/24 256
142.249.114.0/23 512
2a0e:aa07:e250::/44 ~19×10²⁴
2a0e:aa07:e251::/48 ~1×10²⁴
2a0e:aa07:e256::/48 ~1×10²⁴
2a0e:aa07:e254::/48 ~1×10²⁴
2a0e:aa07:e253::/48 ~1×10²⁴

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 'AS203940 - AS205662'

as-block:       AS203940 - AS205662
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 'AS204921'

% Abuse contact for 'AS204921' is 'noc@as204921.net'

aut-num:        AS204921
as-name:        YunZheng-Network
descr:          Yunzheng.Space Research Network
remarks:        Geofeed: https://files.yunzheng.space/webdav/geofeed.csv
org:            ORG-ZS89-RIPE
remarks:        ==================================================
remarks:        | UPSTREAMS
remarks:        ==================================================
remarks:        | RAID NETWORK - TPE
mp-import:      afi any.unicast from AS18423 accept ANY
mp-export:      afi any.unicast to AS18423 announce AS-YUNZHENG
remarks:        | NCSE.TW NETWORK - TPE
mp-import:      afi any.unicast from AS204844 accept ANY
mp-export:      afi any.unicast to AS204844 announce AS-YUNZHENG
remarks:        | IDC Cube - HKG
mp-import:      afi any.unicast from AS36530 accept ANY
mp-export:      afi any.unicast to AS36530 announce AS-YUNZHENG
remarks:        | Sky Digital Co., Ltd. - TPE
mp-import:      afi any.unicast from AS134823 accept ANY
mp-export:      afi any.unicast to AS134823 announce AS-YUNZHENG
remarks:        | MoeDove LLC - TPE
mp-import:      afi any.unicast from AS44324 accept ANY
mp-export:      afi any.unicast to AS44324 announce AS-YUNZHENG
remarks:        ==================================================
remarks:        | INTERNET EXCHNAGE POINTS
remarks:        ==================================================
remarks:        - CXIX | Great Lakes
mp-import:      from AS402298 accept ANY
mp-export:      to AS402298 announce AS-YUNZHENG
remarks:        - STUIX | stuix.io
mp-import:      from AS38855 accept ANY
mp-export:      to AS38855 announce AS-YUNZHENG
remarks:        - TPIX-TW | tpix.net.tw
mp-import:      from AS10133 accept ANY
mp-export:      to AS10133 announce AS-YUNZHENG
remarks:        =================================================
sponsoring-org: ORG-ANL45-RIPE
admin-c:        ZS2129-RIPE
tech-c:         ZS2129-RIPE
remarks:        b222bfa2d373adb3b9314a52c0f4512b
status:         ASSIGNED
mnt-by:         RIPE-NCC-END-MNT
mnt-by:         ZHNET-MNT
mnt-by:         ZYS-MNT
created:        2025-10-10T09:11:08Z
last-modified:  2026-05-29T02:43:28Z
source:         RIPE

organisation:   ORG-ZS89-RIPE
remarks:        ====================================
org-name:       zhenyun sun
descr:          zhenyun.sun - YunZheng.Space/Network
remarks:        ====================================
country:        GB
reg-nr:         Not Applicable
language:       EN
language:       ZH
remarks:        ====================================
org-type:       OTHER
address:        Tartu mnt 67/1-13b, Harjuuma
address:        10115
address:        Tallinn
address:        Estonia
phone:          +852-31651702
remarks:        ====================================
admin-c:        ZS2129-RIPE
tech-c:         ZS2129-RIPE
abuse-c:        ACRO61962-RIPE
mnt-ref:        ZYS-MNT
mnt-by:         ZYS-MNT
mnt-ref:        JIANYUELAB-STAFF-MNT
created:        2025-10-06T22:27:35Z
last-modified:  2026-05-13T05:35:32Z
source:         RIPE # Filtered

person:         ZHENYUN SUN
address:        67-1/13b Tartu mnt, Harjumma, Tallinn, Estonia
phone:          +852-31651702
nic-hdl:        ZS2129-RIPE
mnt-by:         ZYS-MNT
created:        2025-10-06T22:24:20Z
last-modified:  2026-04-27T08:14:30Z
source:         RIPE # Filtered

% This query was served by the RIPE Database Query Service version 1.122.1 (BUSA)


% 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 'AS203940 - AS205662'

as-block:       AS203940 - AS205662
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 'AS204921'

% Abuse contact for 'AS204921' is 'noc@as204921.net'

aut-num:        AS204921
as-name:        YunZheng-Network
descr:          Yunzheng.Space Research Network
remarks:        Geofeed: https://files.yunzheng.space/webdav/geofeed.csv
org:            ORG-ZS89-RIPE
remarks:        ==================================================
remarks:        | UPSTREAMS
remarks:        ==================================================
remarks:        | RAID NETWORK - TPE
mp-import:      afi any.unicast from AS18423 accept ANY
mp-export:      afi any.unicast to AS18423 announce AS-YUNZHENG
remarks:        | NCSE.TW NETWORK - TPE
mp-import:      afi any.unicast from AS204844 accept ANY
mp-export:      afi any.unicast to AS204844 announce AS-YUNZHENG
remarks:        | IDC Cube - HKG
mp-import:      afi any.unicast from AS36530 accept ANY
mp-export:      afi any.unicast to AS36530 announce AS-YUNZHENG
remarks:        | Sky Digital Co., Ltd. - TPE
mp-import:      afi any.unicast from AS134823 accept ANY
mp-export:      afi any.unicast to AS134823 announce AS-YUNZHENG
remarks:        | MoeDove LLC - TPE
mp-import:      afi any.unicast from AS44324 accept ANY
mp-export:      afi any.unicast to AS44324 announce AS-YUNZHENG
remarks:        ==================================================
remarks:        | INTERNET EXCHNAGE POINTS
remarks:        ==================================================
remarks:        - CXIX | Great Lakes
mp-import:      from AS402298 accept ANY
mp-export:      to AS402298 announce AS-YUNZHENG
remarks:        - STUIX | stuix.io
mp-import:      from AS38855 accept ANY
mp-export:      to AS38855 announce AS-YUNZHENG
remarks:        - TPIX-TW | tpix.net.tw
mp-import:      from AS10133 accept ANY
mp-export:      to AS10133 announce AS-YUNZHENG
remarks:        =================================================
sponsoring-org: ORG-ANL45-RIPE
admin-c:        ZS2129-RIPE
tech-c:         ZS2129-RIPE
remarks:        b222bfa2d373adb3b9314a52c0f4512b
status:         ASSIGNED
mnt-by:         RIPE-NCC-END-MNT
mnt-by:         ZHNET-MNT
mnt-by:         ZYS-MNT
created:        2025-10-10T09:11:08Z
last-modified:  2026-05-29T02:43:28Z
source:         RIPE

organisation:   ORG-ZS89-RIPE
remarks:        ====================================
org-name:       zhenyun sun
descr:          zhenyun.sun - YunZheng.Space/Network
remarks:        ====================================
country:        GB
reg-nr:         Not Applicable
language:       EN
language:       ZH
remarks:        ====================================
org-type:       OTHER
address:        Tartu mnt 67/1-13b, Harjuuma
address:        10115
address:        Tallinn
address:        Estonia
phone:          +852-31651702
remarks:        ====================================
admin-c:        ZS2129-RIPE
tech-c:         ZS2129-RIPE
abuse-c:        ACRO61962-RIPE
mnt-ref:        ZYS-MNT
mnt-by:         ZYS-MNT
mnt-ref:        JIANYUELAB-STAFF-MNT
created:        2025-10-06T22:27:35Z
last-modified:  2026-05-13T05:35:32Z
source:         RIPE # Filtered

person:         ZHENYUN SUN
address:        67-1/13b Tartu mnt, Harjumma, Tallinn, Estonia
phone:          +852-31651702
nic-hdl:        ZS2129-RIPE
mnt-by:         ZYS-MNT
created:        2025-10-06T22:24:20Z
last-modified:  2026-04-27T08:14:30Z
source:         RIPE # Filtered

% This query was served by the RIPE Database Query Service version 1.122.1 (BUSA)


% 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 'AS203940 - AS205662'

as-block:       AS203940 - AS205662
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 'AS204921'

% Abuse contact for 'AS204921' is 'noc@as204921.net'

aut-num:        AS204921
as-name:        YunZheng-Network
descr:          Yunzheng.Space Research Network
remarks:        Geofeed: https://files.yunzheng.space/webdav/geofeed.csv
org:            ORG-ZS89-RIPE
remarks:        ==================================================
remarks:        | UPSTREAMS
remarks:        ==================================================
remarks:        | RAID NETWORK - TPE
mp-import:      afi any.unicast from AS18423 accept ANY
mp-export:      afi any.unicast to AS18423 announce AS-YUNZHENG
remarks:        | NCSE.TW NETWORK - TPE
mp-import:      afi any.unicast from AS204844 accept ANY
mp-export:      afi any.unicast to AS204844 announce AS-YUNZHENG
remarks:        | IDC Cube - HKG
mp-import:      afi any.unicast from AS36530 accept ANY
mp-export:      afi any.unicast to AS36530 announce AS-YUNZHENG
remarks:        | Sky Digital Co., Ltd. - TPE
mp-import:      afi any.unicast from AS134823 accept ANY
mp-export:      afi any.unicast to AS134823 announce AS-YUNZHENG
remarks:        | MoeDove LLC - TPE
mp-import:      afi any.unicast from AS44324 accept ANY
mp-export:      afi any.unicast to AS44324 announce AS-YUNZHENG
remarks:        ==================================================
remarks:        | INTERNET EXCHNAGE POINTS
remarks:        ==================================================
remarks:        - CXIX | Great Lakes
mp-import:      from AS402298 accept ANY
mp-export:      to AS402298 announce AS-YUNZHENG
remarks:        - STUIX | stuix.io
mp-import:      from AS38855 accept ANY
mp-export:      to AS38855 announce AS-YUNZHENG
remarks:        - TPIX-TW | tpix.net.tw
mp-import:      from AS10133 accept ANY
mp-export:      to AS10133 announce AS-YUNZHENG
remarks:        =================================================
sponsoring-org: ORG-ANL45-RIPE
admin-c:        ZS2129-RIPE
tech-c:         ZS2129-RIPE
remarks:        b222bfa2d373adb3b9314a52c0f4512b
status:         ASSIGNED
mnt-by:         RIPE-NCC-END-MNT
mnt-by:         ZHNET-MNT
mnt-by:         ZYS-MNT
created:        2025-10-10T09:11:08Z
last-modified:  2026-05-29T02:43:28Z
source:         RIPE

organisation:   ORG-ZS89-RIPE
remarks:        ====================================
org-name:       zhenyun sun
descr:          zhenyun.sun - YunZheng.Space/Network
remarks:        ====================================
country:        GB
reg-nr:         Not Applicable
language:       EN
language:       ZH
remarks:        ====================================
org-type:       OTHER
address:        Tartu mnt 67/1-13b, Harjuuma
address:        10115
address:        Tallinn
address:        Estonia
phone:          +852-31651702
remarks:        ====================================
admin-c:        ZS2129-RIPE
tech-c:         ZS2129-RIPE
abuse-c:        ACRO61962-RIPE
mnt-ref:        ZYS-MNT
mnt-by:         ZYS-MNT
mnt-ref:        JIANYUELAB-STAFF-MNT
created:        2025-10-06T22:27:35Z
last-modified:  2026-05-13T05:35:32Z
source:         RIPE # Filtered

person:         ZHENYUN SUN
address:        67-1/13b Tartu mnt, Harjumma, Tallinn, Estonia
phone:          +852-31651702
nic-hdl:        ZS2129-RIPE
mnt-by:         ZYS-MNT
created:        2025-10-06T22:24:20Z
last-modified:  2026-04-27T08:14:30Z
source:         RIPE # Filtered

% This query was served by the RIPE Database Query Service version 1.122.1 (BUSA)


% 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 'AS203940 - AS205662'

as-block:       AS203940 - AS205662
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 'AS204921'

% Abuse contact for 'AS204921' is 'noc@as204921.net'

aut-num:        AS204921
as-name:        YunZheng-Network
descr:          Yunzheng.Space Research Network
remarks:        Geofeed: https://files.yunzheng.space/webdav/geofeed.csv
org:            ORG-ZS89-RIPE
remarks:        ==================================================
remarks:        | UPSTREAMS
remarks:        ==================================================
remarks:        | RAID NETWORK - TPE
mp-import:      afi any.unicast from AS18423 accept ANY
mp-export:      afi any.unicast to AS18423 announce AS-YUNZHENG
remarks:        | NCSE.TW NETWORK - TPE
mp-import:      afi any.unicast from AS204844 accept ANY
mp-export:      afi any.unicast to AS204844 announce AS-YUNZHENG
remarks:        | IDC Cube - HKG
mp-import:      afi any.unicast from AS36530 accept ANY
mp-export:      afi any.unicast to AS36530 announce AS-YUNZHENG
remarks:        | Sky Digital Co., Ltd. - TPE
mp-import:      afi any.unicast from AS134823 accept ANY
mp-export:      afi any.unicast to AS134823 announce AS-YUNZHENG
remarks:        | MoeDove LLC - TPE
mp-import:      afi any.unicast from AS44324 accept ANY
mp-export:      afi any.unicast to AS44324 announce AS-YUNZHENG
remarks:        ==================================================
remarks:        | INTERNET EXCHNAGE POINTS
remarks:        ==================================================
remarks:        - CXIX | Great Lakes
mp-import:      from AS402298 accept ANY
mp-export:      to AS402298 announce AS-YUNZHENG
remarks:        - STUIX | stuix.io
mp-import:      from AS38855 accept ANY
mp-export:      to AS38855 announce AS-YUNZHENG
remarks:        - TPIX-TW | tpix.net.tw
mp-import:      from AS10133 accept ANY
mp-export:      to AS10133 announce AS-YUNZHENG
remarks:        =================================================
sponsoring-org: ORG-ANL45-RIPE
admin-c:        ZS2129-RIPE
tech-c:         ZS2129-RIPE
remarks:        b222bfa2d373adb3b9314a52c0f4512b
status:         ASSIGNED
mnt-by:         RIPE-NCC-END-MNT
mnt-by:         ZHNET-MNT
mnt-by:         ZYS-MNT
created:        2025-10-10T09:11:08Z
last-modified:  2026-05-29T02:43:28Z
source:         RIPE

organisation:   ORG-ZS89-RIPE
remarks:        ====================================
org-name:       zhenyun sun
descr:          zhenyun.sun - YunZheng.Space/Network
remarks:        ====================================
country:        GB
reg-nr:         Not Applicable
language:       EN
language:       ZH
remarks:        ====================================
org-type:       OTHER
address:        Tartu mnt 67/1-13b, Harjuuma
address:        10115
address:        Tallinn
address:        Estonia
phone:          +852-31651702
remarks:        ====================================
admin-c:        ZS2129-RIPE
tech-c:         ZS2129-RIPE
abuse-c:        ACRO61962-RIPE
mnt-ref:        ZYS-MNT
mnt-by:         ZYS-MNT
mnt-ref:        JIANYUELAB-STAFF-MNT
created:        2025-10-06T22:27:35Z
last-modified:  2026-05-13T05:35:32Z
source:         RIPE # Filtered

person:         ZHENYUN SUN
address:        67-1/13b Tartu mnt, Harjumma, Tallinn, Estonia
phone:          +852-31651702
nic-hdl:        ZS2129-RIPE
mnt-by:         ZYS-MNT
created:        2025-10-06T22:24:20Z
last-modified:  2026-04-27T08:14:30Z
source:         RIPE # Filtered

% This query was served by the RIPE Database Query Service version 1.122.1 (DEXTER)

Parsed Whois Response

Peers

AS Number Description Country
AS24482 SG.GS SG
AS207705 Jyun Kai Hu TW
AS59105 Home NOC Operators Group JP
AS213151 Christian Elsen DE
AS32595 Liberally Network, LLC US
AS10133 Chief Telecom Inc. TW
AS6939 Hurricane Electric LLC US
AS25091 IP Max SA CH
AS7721 Qin Cloud Networks HK
AS8298 IPng Networks GmbH CH

Upstreams

AS Number Description Country
AS24482 SG.GS SG
AS216211 CYBERVERSE LLC US
AS204211 Hangzhou Yingyun Network Technology Co., Ltd. CN
AS50629 LWLcom GmbH DE
AS25091 IP Max SA CH
AS6939 Hurricane Electric LLC US
AS8298 IPng Networks GmbH CH
AS204844 NCSE NETWORK LTD GB
AS36530 IDC Cube US
AS137409 GSL Networks Pty LTD AU

Downstreams

AS Number Description Country
AS207529 NYANLOLI LTD GB

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Frequently Asked Questions

ASN AS204921 is an Autonomous System Number used to identify a network for BGP internet routing.
AS204921 is listed under zhenyun sun.
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.