ASN AS18256 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS18256?

AS18256 is listed under Bank of Ayudhya Public Company Limited..

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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AS18256 Bank of Ayudhya Public Company Limited.

ASN Lookup Tool

Bank of Ayudhya Public Company Limited. krungsri.com

TH 7 Routes

AS Data

AS18256

AS18256 – Bank of Ayudhya Public Company Limited.

AS Number	18256
AS Name	BAY-AS-AP
Organization	Bank of Ayudhya Public Company Limited. (org-boap1-ap)
Country	TH
Website	krungsri.com
Number of IPv4 Routes	7
Number of IPv6 Routes	0
ASN type	BUSINESS
Registry	APNIC
Date Allocated	N/A

ASN Intelligence API for production workflows

Use ASN data for AS18256 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
103.216.96.0/24	AS18256	Bank of Ayudhya Public Company Limited.	Bank of Ayudhya Public Company Limited.	256
202.183.239.0/24	AS18256	Bank of Ayudhya Public Company Limited.	ADVANCED WIRELESS NETWORK COMPANY LIMITED	256
103.216.97.0/24	AS18256	Bank of Ayudhya Public Company Limited.	Bank of Ayudhya Public Company Limited.	256
58.64.42.0/24	AS18256	Bank of Ayudhya Public Company Limited.	abuselPv4sbn.co.th	256
103.219.196.0/24	AS18256	Bank of Ayudhya Public Company Limited.	Bank of Ayudhya Public Company Limited.	256
103.93.166.0/24	AS18256	Bank of Ayudhya Public Company Limited.	ADVANCED WIRELESS NETWORK COMPANY LIMITED	256
87.124.71.0/24	AS18256	Bank of Ayudhya Public Company Limited.	SYMPHONY INTERNET DIA	256

Raw Whois Response

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

% Information related to 'AS17653 - AS18431'

as-block:       AS17653 - AS18431
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:  2019-01-08T23:19:07Z
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 'AS18256'

% Abuse contact for 'AS18256' is 'watjarkon.butrarat@krungsri.com'

aut-num:        AS18256
as-name:        BAY-AS-AP
descr:          Bank of Ayudhya Public Company Limited.
descr:          1222 Rama III Road
descr:          Bangphongphang Sub-District
country:        TH
org:            ORG-BOAP1-AP
admin-c:        BOAP1-AP
tech-c:         BOAP1-AP
abuse-c:        AB924-AP
mnt-lower:      MAINT-BAY-TH
mnt-routes:     MAINT-BAY-TH
mnt-by:         APNIC-HM
mnt-irt:        IRT-BAY-TH
last-modified:  2020-05-20T01:18:44Z
source:         APNIC

irt:            IRT-BAY-TH
address:        1222 Rama III Road, Bangphongphang Sub-District, Yannawa Bangkok 10120
e-mail:         watjarkon.butrarat@krungsri.com
abuse-mailbox:  watjarkon.butrarat@krungsri.com
admin-c:        BOAP1-AP
tech-c:         BOAP1-AP
auth:           # Filtered
remarks:        watjarkon.butrarat@krungsri.com was validated on 2026-01-07
mnt-by:         MAINT-BAY-TH
last-modified:  2026-01-07T01:28:52Z
source:         APNIC

organisation:   ORG-BOAP1-AP
org-name:       Bank of Ayudhya Public Company Limited.
org-type:       LIR
country:        TH
address:        1222 Rama III Road
address:        Bangphongphang Sub-District
phone:          +662-296-2057
e-mail:         watjarkon.butrarat@krungsri.com
mnt-ref:        APNIC-HM
mnt-by:         APNIC-HM
last-modified:  2023-09-05T02:16:52Z
source:         APNIC

role:           ABUSE BAYTH
country:        ZZ
address:        1222 Rama III Road, Bangphongphang Sub-District, Yannawa Bangkok 10120
phone:          +000000000
e-mail:         watjarkon.butrarat@krungsri.com
admin-c:        BOAP1-AP
tech-c:         BOAP1-AP
nic-hdl:        AB924-AP
remarks:        Generated from irt object IRT-BAY-TH
remarks:        watjarkon.butrarat@krungsri.com was validated on 2026-01-07
abuse-mailbox:  watjarkon.butrarat@krungsri.com
mnt-by:         APNIC-ABUSE
last-modified:  2026-01-07T01:29:25Z
source:         APNIC

role:           Bank of Ayudhya Public Company Limited administra
address:        1222 Rama III Road, Bangphongphang Sub-District, Yannawa Bangkok 10120
country:        TH
phone:          +662-296-2057
fax-no:         +662-296-2057
e-mail:         watjarkon.butrarat@krungsri.com
admin-c:        BOAP1-AP
tech-c:         BOAP1-AP
nic-hdl:        BOAP1-AP
mnt-by:         MAINT-BAY-TH
last-modified:  2016-04-27T01:32:19Z
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" : "AS17653 - AS18431",
    "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" : "2019-01-08",
    "source" : "APNIC"
  } ],
  "aut_nums" : [ {
    "aut_num" : "AS18256",
    "as_name" : "BAY-AS-AP",
    "description" : [ "Bank of Ayudhya Public Company Limited.", "1222 Rama III Road", "Bangphongphang Sub-District" ],
    "country" : "TH",
    "organization" : "ORG-BOAP1-AP",
    "admin_contacts" : [ "BOAP1-AP" ],
    "tech_contacts" : [ "BOAP1-AP" ],
    "abuse_contacts" : [ "AB924-AP" ],
    "mnt_irt" : [ "IRT-BAY-TH" ],
    "mnt_lower" : [ "MAINT-BAY-TH" ],
    "mnt_routes" : [ "MAINT-BAY-TH" ],
    "mnt_by" : [ "APNIC-HM" ],
    "date_updated" : "2020-05-20",
    "source" : "APNIC"
  } ],
  "irt" : {
    "handle" : "IRT-BAY-TH",
    "address" : [ "1222 Rama III Road, Bangphongphang Sub-District, Yannawa Bangkok 10120" ],
    "street" : "Rama Iii Road Bangphongphang Sub-district Yannawa",
    "city" : "Bangkok",
    "zip_code" : "10120",
    "email" : [ "watjarkon.butrarat@krungsri.com" ],
    "abuse_mailbox" : [ "watjarkon.butrarat@krungsri.com" ],
    "admin_contacts" : [ "BOAP1-AP" ],
    "tech_contacts" : [ "BOAP1-AP" ],
    "remarks" : [ "watjarkon.butrarat@krungsri.com was validated on 2026-01-07" ],
    "mnt_by" : [ "MAINT-BAY-TH" ],
    "date_updated" : "2026-01-07",
    "source" : "APNIC"
  },
  "organization" : {
    "handle" : "ORG-BOAP1-AP",
    "name" : "Bank of Ayudhya Public Company Limited.",
    "type" : "LIR",
    "address" : [ "1222 Rama III Road", "Bangphongphang Sub-District" ],
    "street" : "Rama Iii Road Bangphongphang Sub-district",
    "country" : [ "TH" ],
    "email" : [ "watjarkon.butrarat@krungsri.com" ],
    "phone" : [ "+662-296-2057" ],
    "mnt_ref" : [ "APNIC-HM" ],
    "mnt_by" : [ "APNIC-HM" ],
    "date_updated" : "2023-09-05",
    "source" : "APNIC"
  },
  "administrative_contacts" : [ {
    "handle" : "BOAP1-AP",
    "name" : "Bank of Ayudhya Public Company Limited administra",
    "address" : [ "1222 Rama III Road, Bangphongphang Sub-District, Yannawa Bangkok 10120" ],
    "street" : "Rama Iii Road Bangphongphang Sub-district Yannawa",
    "city" : "Bangkok",
    "zip_code" : "10120",
    "country" : "TH",
    "email" : [ "watjarkon.butrarat@krungsri.com" ],
    "phone" : [ "+662-296-2057" ],
    "fax_no" : [ "+662-296-2057" ],
    "admin_contacts" : [ "BOAP1-AP" ],
    "tech_contacts" : [ "BOAP1-AP" ],
    "mnt_by" : [ "MAINT-BAY-TH" ],
    "date_updated" : "2016-04-27",
    "source" : "APNIC"
  } ],
  "technical_contacts" : [ {
    "handle" : "BOAP1-AP",
    "name" : "Bank of Ayudhya Public Company Limited administra",
    "address" : [ "1222 Rama III Road, Bangphongphang Sub-District, Yannawa Bangkok 10120" ],
    "street" : "Rama Iii Road Bangphongphang Sub-district Yannawa",
    "city" : "Bangkok",
    "zip_code" : "10120",
    "country" : "TH",
    "email" : [ "watjarkon.butrarat@krungsri.com" ],
    "phone" : [ "+662-296-2057" ],
    "fax_no" : [ "+662-296-2057" ],
    "admin_contacts" : [ "BOAP1-AP" ],
    "tech_contacts" : [ "BOAP1-AP" ],
    "mnt_by" : [ "MAINT-BAY-TH" ],
    "date_updated" : "2016-04-27",
    "source" : "APNIC"
  } ],
  "abuse_contacts" : [ {
    "handle" : "AB924-AP",
    "name" : "ABUSE BAYTH",
    "address" : [ "1222 Rama III Road, Bangphongphang Sub-District, Yannawa Bangkok 10120" ],
    "street" : "Rama Iii Road Bangphongphang Sub-district Yannawa",
    "city" : "Bangkok",
    "zip_code" : "10120",
    "country" : "ZZ",
    "email" : [ "watjarkon.butrarat@krungsri.com" ],
    "abuse_mailbox" : [ "watjarkon.butrarat@krungsri.com" ],
    "phone" : [ "+000000000" ],
    "admin_contacts" : [ "BOAP1-AP" ],
    "tech_contacts" : [ "BOAP1-AP" ],
    "remarks" : [ "Generated from irt object IRT-BAY-TH", "watjarkon.butrarat@krungsri.com was validated on 2026-01-07" ],
    "mnt_by" : [ "APNIC-ABUSE" ],
    "date_updated" : "2026-01-07",
    "source" : "APNIC"
  } ]
}

Peers

AS Number	Description	Country
AS7470	TRUE INTERNET Co.,Ltd.	TH
AS45458	SBN ISP/AWN ISP and SBN NIX/AWN NIX	TH
AS7470	TRUE INTERNET CORPORATION CO. LTD.	TH
AS19551	Incapsula Inc	US
AS45458	SBN-ISP/AWN-ISP and SBN-NIX/AWN-NIX	TH
AS45430	SBN-IIG/AWN-IIG transit provider	TH