What is ASN AS131604?

ASN AS131604 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS131604?

AS131604 is listed under CATVISP.

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?

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AS131604 CATVISP | IPGeolocation.io

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Legacy Routes

CATVISP nwcatv.com.tw

TW 0 Routes

AS Data

AS131604

AS131604 – CATVISP

AS Number	131604
AS Name	CATVISP
Organization	CATVISP
Country	TW
Website	nwcatv.com.tw
Number of IPv4 Routes	0
Number of IPv6 Routes	0
ASN type	ISP
Registry	APNIC
Date Allocated	N/A

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Raw Whois Response

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

% Information related to 'AS131072 - AS132095'

as-block:       AS131072 - AS132095
descr:          APNIC 32-bit 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:  2009-09-29T05:34:08Z
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 'AS131584 - AS131639'

as-block:       AS131584 - AS131639
descr:          TWNIC-TW-4-byte-AS-BLOCK1
descr:          These AS numbers are further assigned by TWNIC
descr:          to TWNIC members
country:        TW
admin-c:        TWA2-AP
tech-c:         TWA2-AP
mnt-by:         MAINT-TW-TWNIC
mnt-lower:      MAINT-TW-TWNIC
last-modified:  2025-02-11T03:29:09Z
source:         APNIC

role:           TWNIC Whois Administrator
address:        Taiwan Network Information Center
address:        3F., No. 123, Sec. 4, Bade Rd., Songshan Dist.,
address:        Taipei, Taiwan, 105
country:        TW
phone:          +886-2-25289696
fax-no:         +886-2-25287756
e-mail:         hostmaster@twnic.net.tw
admin-c:        ck373-AP
tech-c:         TW922-AP
tech-c:         NS10-AP
nic-hdl:        TWA2-AP
notify:         hostmaster@twnic.net.tw
mnt-by:         MAINT-TW-TWNIC
last-modified:  2020-01-02T03:54:20Z
source:         APNIC

% Information related to 'AS131604'

% Abuse contact for 'AS131604' is '511131@pfcatv.com.tw'

aut-num:        AS131604
as-name:        CATVISP
descr:          Chaoyu Internetwork lnternational Corp
descr:          No.2, Ln. 149, Sec. 2, Changsha St.,Wanhua Dist.
descr:          TAIPEI Taiwan 108
country:        TW
import:         from AS18046 action pref=100; accept ANY
import:         from AS9924 action pref=100; accept ANY
export:         to AS18046 announce AS131604
export:         to AS9924 announce AS131604
default:        to AS18046 action pref=10; networks ANY
default:        to AS9386 action pref=10; networks ANY
admin-c:        CH1845-AP
tech-c:         CH1845-AP
abuse-c:        AT939-AP
mnt-by:         MAINT-TW-TWNIC
mnt-irt:        IRT-CATVISP-TW
last-modified:  2025-11-07T00:56:39Z
source:         APNIC

irt:            IRT-CATVISP-TW
address:        Chaoyu Internetwork lnternational Corp
address:        4F., No.91, Sec. 2, Changsha St., Wanhua Dist., Taipei
address:        TAIPEI
phone:          +886-2-2382-6294
e-mail:         511131@pfcatv.com.tw
abuse-mailbox:  511131@pfcatv.com.tw
admin-c:        TR294-AP
tech-c:         TR294-AP
remarks:        (oid:CATVISP)
mnt-by:         MAINT-TW-TWNIC
last-modified:  2025-11-06T07:13:04Z
source:         APNIC
auth:           # Filtered

role:           ABUSE TWNICAP
country:        ZZ
address:        3F., No. 123, Sec. 4, Bade Rd., Songshan Dist., Taipei 105, Taiwan
phone:          +000000000
e-mail:         hostmaster@twnic.tw
admin-c:        TWA2-AP
tech-c:         TWA2-AP
nic-hdl:        AT939-AP
remarks:        Generated from irt object IRT-TWNIC-AP
remarks:        hostmaster@twnic.tw was validated on 2025-05-23
abuse-mailbox:  hostmaster@twnic.tw
mnt-by:         APNIC-ABUSE
last-modified:  2025-05-23T00:02:10Z
source:         APNIC

person:         CHENGLUNG HSIEH
nic-hdl:        CH1845-AP
e-mail:         joehsieh@nwcatv.com.tw
address:        No.2, Ln. 149, Sec. 2, Changsha St., Wanhua Dist., Taipei
address:        TAIPEI, 108, R.O.C
phone:          +886955343355
fax-no:         +886-2-2382-6294
country:        TW
mnt-by:         MAINT-TW-TWNIC
last-modified:  2013-10-08T06:40:02Z
source:         APNIC

% Information related to 'AS131072 - AS132095'

as-block:       AS131072 - AS132095
descr:          APNIC 32-bit ASN block
admin-c:        IA55-AP
tech-c:         IH123-AP
mnt-by:         MNT-APJII-ID
mnt-lower:      MNT-APJII-ID
last-modified:  2026-02-25T07:12:54Z
source:         IDNIC

role:           ID-NIC ADMINISTRATORS
address:        Indonesian Network Information Center
address:        ID-NIC
address:        Cyber Building 11th Floor
address:        Jakarta 12710
country:        ID
phone:          +62-21-52960634
fax-no:         +62-21-52960635
e-mail:         hostmaster@idnic.net
admin-c:        IH288-AP
tech-c:         IH288-AP
nic-hdl:        IA55-AP
notify:         hostmaster@idnic.net
mnt-by:         MNT-APJII-ID
last-modified:  2026-02-25T04:06:45Z
source:         IDNIC

role:           ID-NIC HOSTMASTERS
address:        Indonesian Network Information Center
address:        ID-NIC
address:        Cyber Building 11th Floor
address:        Jakarta 12710
country:        ID
phone:          +62-21-52960634
fax-no:         +62-21-52960635
e-mail:         hostmaster@idnic.net
remarks:        spam and abuse report : abuse@apjii.or.id
remarks:        technical and routing : support@apjii.or.id
remarks:        administrative request : admin@apjii.or.id
remarks:        IDNIC hostmasters role object
admin-c:        IH1-AP
tech-c:         IH1-AP
nic-hdl:        IH123-AP
notify:         hostmaster@idnic.net
mnt-by:         MNT-APJII-ID
last-modified:  2024-07-10T05:48:59Z
source:         IDNIC

% This query was served by the APNIC Whois Service version 1.88.34 (WHOIS-SG1)

Parsed Whois Response

{
  "status" : true,
  "whois_server" : "whois.apnic.net",
  "as_blocks" : [ {
    "as_block" : "AS131072 - AS132095",
    "description" : [ "APNIC 32-bit 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" : "2009-09-29",
    "source" : "APNIC"
  }, {
    "as_block" : "AS131584 - AS131639",
    "country" : "TW",
    "description" : [ "TWNIC-TW-4-byte-AS-BLOCK1", "These AS numbers are further assigned by TWNIC", "to TWNIC members" ],
    "admin_contacts" : [ "TWA2-AP" ],
    "tech_contacts" : [ "TWA2-AP" ],
    "mnt_by" : [ "MAINT-TW-TWNIC" ],
    "mnt_lower" : [ "MAINT-TW-TWNIC" ],
    "date_updated" : "2025-02-11",
    "source" : "APNIC"
  }, {
    "as_block" : "AS131072 - AS132095",
    "description" : [ "APNIC 32-bit ASN block" ],
    "admin_contacts" : [ "IA55-AP" ],
    "tech_contacts" : [ "IH123-AP" ],
    "mnt_by" : [ "MNT-APJII-ID" ],
    "mnt_lower" : [ "MNT-APJII-ID" ],
    "date_updated" : "2026-02-25",
    "source" : "IDNIC"
  } ],
  "aut_nums" : [ {
    "aut_num" : "AS131604",
    "as_name" : "CATVISP",
    "description" : [ "Chaoyu Internetwork lnternational Corp", "No.2, Ln. 149, Sec. 2, Changsha St.,Wanhua Dist.", "TAIPEI Taiwan 108" ],
    "country" : "TW",
    "import" : [ "from AS18046 action pref=100; accept ANY", "from AS9924 action pref=100; accept ANY" ],
    "export" : [ "to AS18046 announce AS131604", "to AS9924 announce AS131604" ],
    "default" : [ "to AS18046 action pref=10; networks ANY", "to AS9386 action pref=10; networks ANY" ],
    "admin_contacts" : [ "CH1845-AP" ],
    "tech_contacts" : [ "CH1845-AP" ],
    "abuse_contacts" : [ "AT939-AP" ],
    "mnt_irt" : [ "IRT-CATVISP-TW" ],
    "mnt_by" : [ "MAINT-TW-TWNIC" ],
    "date_updated" : "2025-11-07",
    "source" : "APNIC"
  } ],
  "irt" : {
    "handle" : "IRT-CATVISP-TW",
    "address" : [ "Chaoyu Internetwork lnternational Corp", "4F., No.91, Sec. 2, Changsha St., Wanhua Dist., Taipei", "TAIPEI" ],
    "email" : [ "511131@pfcatv.com.tw" ],
    "abuse_mailbox" : [ "511131@pfcatv.com.tw" ],
    "phone" : [ "+886-2-2382-6294" ],
    "admin_contacts" : [ "TR294-AP" ],
    "tech_contacts" : [ "TR294-AP" ],
    "remarks" : [ "(oid:CATVISP)" ],
    "mnt_by" : [ "MAINT-TW-TWNIC" ],
    "date_updated" : "2025-11-06",
    "source" : "APNIC"
  },
  "administrative_contacts" : [ {
    "handle" : "CH1845-AP",
    "name" : "CHENGLUNG HSIEH",
    "address" : [ "No.2, Ln. 149, Sec. 2, Changsha St., Wanhua Dist., Taipei", "TAIPEI, 108, R.O.C" ],
    "street" : "No.2 Ln. 149 Sec. 2 Changsha St. Wanhua Dist. Taipei Taipei",
    "zip_code" : "108",
    "country" : "TW",
    "email" : [ "joehsieh@nwcatv.com.tw" ],
    "phone" : [ "+886955343355" ],
    "fax_no" : [ "+886-2-2382-6294" ],
    "mnt_by" : [ "MAINT-TW-TWNIC" ],
    "date_updated" : "2013-10-08",
    "source" : "APNIC",
    "addressCountry" : "R.O.C"
  } ],
  "technical_contacts" : [ {
    "handle" : "CH1845-AP",
    "name" : "CHENGLUNG HSIEH",
    "address" : [ "No.2, Ln. 149, Sec. 2, Changsha St., Wanhua Dist., Taipei", "TAIPEI, 108, R.O.C" ],
    "street" : "No.2 Ln. 149 Sec. 2 Changsha St. Wanhua Dist. Taipei Taipei",
    "zip_code" : "108",
    "country" : "TW",
    "email" : [ "joehsieh@nwcatv.com.tw" ],
    "phone" : [ "+886955343355" ],
    "fax_no" : [ "+886-2-2382-6294" ],
    "mnt_by" : [ "MAINT-TW-TWNIC" ],
    "date_updated" : "2013-10-08",
    "source" : "APNIC",
    "addressCountry" : "R.O.C"
  } ],
  "abuse_contacts" : [ {
    "handle" : "AT939-AP",
    "name" : "ABUSE TWNICAP",
    "address" : [ "3F., No. 123, Sec. 4, Bade Rd., Songshan Dist., Taipei 105, Taiwan" ],
    "street" : "Sec. 4 Bade Rd.",
    "city" : "Taipei",
    "zip_code" : "105",
    "country" : "ZZ",
    "email" : [ "hostmaster@twnic.tw" ],
    "abuse_mailbox" : [ "hostmaster@twnic.tw" ],
    "phone" : [ "+000000000" ],
    "admin_contacts" : [ "TWA2-AP" ],
    "tech_contacts" : [ "TWA2-AP" ],
    "remarks" : [ "Generated from irt object IRT-TWNIC-AP", "hostmaster@twnic.tw was validated on 2025-05-23" ],
    "mnt_by" : [ "APNIC-ABUSE" ],
    "date_updated" : "2025-05-23",
    "source" : "APNIC",
    "addressCountry" : "TAIWAN"
  } ]
}