ASN AS55750 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS55750?

AS55750 is listed under ABC Computer Systems Ltd.

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.

AS55750 ABC Computer Systems Ltd

ASN Lookup Tool

ABC Computer Systems Ltd abchk.com

HK 3 Routes

AS Data

AS55750

AS55750 – ABC Computer Systems Ltd

AS Number	55750
AS Name	ABCHK-HK
Organization	ABC Computer Systems Ltd (org-acsl2-ap)
Country	HK
Website	abchk.com
Number of IPv4 Routes	3
Number of IPv6 Routes	0
ASN type	ISP
Registry	APNIC
Date Allocated	N/A

ASN Intelligence API for production workflows

Use ASN data for AS55750 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
223.29.250.0/24	AS55750	ABC Computer Systems Ltd	ABC Computer Systems Ltd	256
223.29.248.0/24	AS55750	ABC Computer Systems Ltd	ABC Computer Systems Ltd	256
223.29.249.0/24	AS55750	ABC Computer Systems Ltd	ABC Computer Systems Ltd	256

Raw Whois Response

% [whois.apnic.net]
% Whois data copyright terms    http://www.apnic.net/db/dbcopyright.html

% Information related to 'AS55296 - AS56319'

as-block:       AS55296 - AS56319
descr:          APNIC ASN block
remarks:        These AS numbers are further assigned by APNIC
remarks:        to APNIC members and end-users in the APNIC region
admin-c:        HM20-AP
tech-c:         HM20-AP
mnt-by:         APNIC-HM
mnt-lower:      APNIC-HM
last-modified:  2009-09-03T01:15:30Z
source:         APNIC

role:           APNIC Hostmaster
address:        6 Cordelia Street
address:        South Brisbane
address:        QLD 4101
country:        AU
phone:          +61 7 3858 3100
fax-no:         +61 7 3858 3199
e-mail:         helpdesk@apnic.net
admin-c:        AMS11-AP
tech-c:         AH256-AP
nic-hdl:        HM20-AP
remarks:        Administrator for APNIC
notify:         hostmaster@apnic.net
mnt-by:         MAINT-APNIC-AP
last-modified:  2013-10-23T04:06:51Z
source:         APNIC

% Information related to 'AS55750'

% Abuse contact for 'AS55750' is 'abuse@abchk.com'

aut-num:        AS55750
as-name:        ABCHK-HK
descr:          ABC Computer Systems Ltd
country:        HK
org:            ORG-ACSL2-AP
admin-c:        YMT2-AP
tech-c:         YMT2-AP
abuse-c:        AA1788-AP
mnt-lower:      MAINT-ABCHK-HK
mnt-routes:     MAINT-ABCHK-HK
mnt-by:         APNIC-HM
mnt-irt:        IRT-ABCHK-HK
last-modified:  2020-07-07T14:02:50Z
source:         APNIC

irt:            IRT-ABCHK-HK
address:        Unit J, 18/F., World Tech Centre, 95 How Ming St., KLN, HK
e-mail:         abuse@abchk.com
abuse-mailbox:  abuse@abchk.com
admin-c:        YMT2-AP
tech-c:         YMT2-AP
auth:           # Filtered
remarks:        abuse@abchk.com was validated on 2026-02-17
mnt-by:         MAINT-ABCHK-HK
last-modified:  2026-02-17T17:06:06Z
source:         APNIC

organisation:   ORG-ACSL2-AP
org-name:       ABC Computer Systems Ltd
org-type:       LIR
country:        HK
address:        Unit J, 18/F. World Tech Centre
address:        95 How Ming Street
phone:          +852-2579-1190
fax-no:         +852-2516-9692
e-mail:         enquiry@abchk.com
mnt-ref:        APNIC-HM
mnt-by:         APNIC-HM
last-modified:  2023-09-05T02:15:43Z
source:         APNIC

role:           ABUSE ABCHKHK
country:        ZZ
address:        Unit J, 18/F., World Tech Centre, 95 How Ming St., KLN, HK
phone:          +000000000
e-mail:         abuse@abchk.com
admin-c:        YMT2-AP
tech-c:         YMT2-AP
nic-hdl:        AA1788-AP
remarks:        Generated from irt object IRT-ABCHK-HK
remarks:        abuse@abchk.com was validated on 2026-02-17
abuse-mailbox:  abuse@abchk.com
mnt-by:         APNIC-ABUSE
last-modified:  2026-02-17T17:06:19Z
source:         APNIC

person:         Yu Ming Tai
address:        Unit J, 18/F., World Tech Centre, 95 How Ming St., KLN, HK
country:        HK
phone:          +852-2579 1190
fax-no:         +852-2516 9692
e-mail:         patrick@abchk.com
nic-hdl:        YMT2-AP
mnt-by:         MAINT-NEW
last-modified:  2010-09-07T00:48:02Z
source:         APNIC

% This query was served by the APNIC Whois Service version 1.88.34 (WHOIS-US2)

Parsed Whois Response

{
  "status" : true,
  "whois_server" : "whois.apnic.net",
  "as_blocks" : [ {
    "as_block" : "AS55296 - AS56319",
    "description" : [ "APNIC ASN block" ],
    "admin_contacts" : [ "HM20-AP" ],
    "tech_contacts" : [ "HM20-AP" ],
    "remarks" : [ "These AS numbers are further assigned by APNIC", "to APNIC members and end-users in the APNIC region" ],
    "mnt_by" : [ "APNIC-HM" ],
    "mnt_lower" : [ "APNIC-HM" ],
    "date_updated" : "2009-09-03",
    "source" : "APNIC"
  } ],
  "aut_nums" : [ {
    "aut_num" : "AS55750",
    "as_name" : "ABCHK-HK",
    "description" : [ "ABC Computer Systems Ltd" ],
    "country" : "HK",
    "organization" : "ORG-ACSL2-AP",
    "admin_contacts" : [ "YMT2-AP" ],
    "tech_contacts" : [ "YMT2-AP" ],
    "abuse_contacts" : [ "AA1788-AP" ],
    "mnt_irt" : [ "IRT-ABCHK-HK" ],
    "mnt_lower" : [ "MAINT-ABCHK-HK" ],
    "mnt_routes" : [ "MAINT-ABCHK-HK" ],
    "mnt_by" : [ "APNIC-HM" ],
    "date_updated" : "2020-07-07",
    "source" : "APNIC"
  } ],
  "irt" : {
    "handle" : "IRT-ABCHK-HK",
    "address" : [ "Unit J, 18/F., World Tech Centre, 95 How Ming St., KLN, HK" ],
    "street" : "How Ming St.",
    "city" : "Kln",
    "country" : "HK",
    "email" : [ "abuse@abchk.com" ],
    "abuse_mailbox" : [ "abuse@abchk.com" ],
    "admin_contacts" : [ "YMT2-AP" ],
    "tech_contacts" : [ "YMT2-AP" ],
    "remarks" : [ "abuse@abchk.com was validated on 2026-02-17" ],
    "mnt_by" : [ "MAINT-ABCHK-HK" ],
    "date_updated" : "2026-02-17",
    "source" : "APNIC"
  },
  "organization" : {
    "handle" : "ORG-ACSL2-AP",
    "name" : "ABC Computer Systems Ltd",
    "type" : "LIR",
    "address" : [ "Unit J, 18/F. World Tech Centre", "95 How Ming Street" ],
    "street" : "How Ming Street",
    "country" : [ "HK" ],
    "email" : [ "enquiry@abchk.com" ],
    "phone" : [ "+852-2579-1190" ],
    "fax_no" : [ "+852-2516-9692" ],
    "mnt_ref" : [ "APNIC-HM" ],
    "mnt_by" : [ "APNIC-HM" ],
    "date_updated" : "2023-09-05",
    "source" : "APNIC"
  },
  "administrative_contacts" : [ {
    "handle" : "YMT2-AP",
    "name" : "Yu Ming Tai",
    "address" : [ "Unit J, 18/F., World Tech Centre, 95 How Ming St., KLN, HK" ],
    "street" : "How Ming St.",
    "city" : "Kln",
    "country" : "HK",
    "email" : [ "patrick@abchk.com" ],
    "phone" : [ "+852-2579 1190" ],
    "fax_no" : [ "+852-2516 9692" ],
    "mnt_by" : [ "MAINT-NEW" ],
    "date_updated" : "2010-09-07",
    "source" : "APNIC",
    "addressCountry" : "HK"
  } ],
  "technical_contacts" : [ {
    "handle" : "YMT2-AP",
    "name" : "Yu Ming Tai",
    "address" : [ "Unit J, 18/F., World Tech Centre, 95 How Ming St., KLN, HK" ],
    "street" : "How Ming St.",
    "city" : "Kln",
    "country" : "HK",
    "email" : [ "patrick@abchk.com" ],
    "phone" : [ "+852-2579 1190" ],
    "fax_no" : [ "+852-2516 9692" ],
    "mnt_by" : [ "MAINT-NEW" ],
    "date_updated" : "2010-09-07",
    "source" : "APNIC",
    "addressCountry" : "HK"
  } ],
  "abuse_contacts" : [ {
    "handle" : "AA1788-AP",
    "name" : "ABUSE ABCHKHK",
    "address" : [ "Unit J, 18/F., World Tech Centre, 95 How Ming St., KLN, HK" ],
    "street" : "How Ming St.",
    "city" : "Kln",
    "country" : "ZZ",
    "email" : [ "abuse@abchk.com" ],
    "abuse_mailbox" : [ "abuse@abchk.com" ],
    "phone" : [ "+000000000" ],
    "admin_contacts" : [ "YMT2-AP" ],
    "tech_contacts" : [ "YMT2-AP" ],
    "remarks" : [ "Generated from irt object IRT-ABCHK-HK", "abuse@abchk.com was validated on 2026-02-17" ],
    "mnt_by" : [ "APNIC-ABUSE" ],
    "date_updated" : "2026-02-17",
    "source" : "APNIC",
    "addressCountry" : "HK"
  } ]
}

Peers

AS Number	Description	Country
AS9381	HKBN Enterprise Solutions HK Limited	HK

Upstreams

AS Number	Description	Country
AS9381	HKBN Enterprise Solutions HK Limited	HK

Contacts

Email Contacts

patrick@abchk.com

Abuse Contacts

abuse@abchk.com