This AS is not currently used to announce prefixes in the global routing table, nor is it used as a visible transit AS.
Advertisements that are fragments of the original RIR allocation (more specifics) originated by this AS.
AS203872 48 More Specifics 72 Total Advertisements VEM, US
24.235.22.0/24 24.235.22.0/23
24.235.23.0/24 24.235.22.0/23
79.110.184.0/23 79.110.184.0/22
79.110.186.0/23 79.110.184.0/22
85.204.28.0/24 85.204.28.0/23
85.204.29.0/24 85.204.28.0/23
86.106.28.0/24 86.106.28.0/23
86.106.29.0/24 86.106.28.0/23
89.20.50.0/24 89.20.50.0/23
89.20.51.0/24 89.20.50.0/23
89.37.60.0/24 89.37.60.0/23
89.37.61.0/24 89.37.60.0/23
89.39.184.0/24 89.39.184.0/23
89.39.185.0/24 89.39.184.0/23
89.40.236.0/24 89.40.236.0/23
89.40.237.0/24 89.40.236.0/23
91.217.106.0/24 91.217.106.0/23
91.217.107.0/24 91.217.106.0/23
95.215.144.0/23 95.215.144.0/22
95.215.146.0/23 95.215.144.0/22
128.0.60.0/23 128.0.60.0/22
128.0.62.0/23 128.0.60.0/22
141.193.108.0/23 141.193.108.0/22
141.193.110.0/23 141.193.108.0/22
141.193.214.0/24 141.193.214.0/23
141.193.215.0/24 141.193.214.0/23
162.216.138.0/24 162.216.138.0/23
162.216.139.0/24 162.216.138.0/23
162.250.216.0/23 162.250.216.0/22
162.250.218.0/23 162.250.216.0/22
168.149.248.0/24 168.149.248.0/23
168.149.249.0/24 168.149.248.0/23
173.214.200.0/23 173.214.200.0/22
173.214.202.0/23 173.214.200.0/22
176.111.54.0/24 176.111.54.0/23
176.111.55.0/24 176.111.54.0/23
188.215.12.0/23 188.215.12.0/22
188.215.14.0/23 188.215.12.0/22
193.91.8.0/24 193.91.8.0/23
193.91.9.0/24 193.91.8.0/23
195.78.90.0/24 195.78.90.0/23
195.78.91.0/24 195.78.90.0/23
199.48.230.0/24 199.48.230.0/23
199.48.231.0/24 199.48.230.0/23
205.220.216.0/24 205.220.216.0/23
205.220.217.0/24 205.220.216.0/23
217.144.108.0/23 217.144.108.0/22
217.144.110.0/23 217.144.108.0/22
Prefixes added and withdrawn by this origin AS in the past 7 days.
+ 24.235.22.0/24 Announced
+ 24.235.23.0/24 Announced
+ 79.110.184.0/22 Announced
+ 79.110.184.0/23 Announced
+ 79.110.186.0/23 Announced
+ 85.204.28.0/24 Announced
+ 85.204.29.0/24 Announced
+ 86.106.28.0/24 Announced
+ 86.106.29.0/24 Announced
+ 89.20.50.0/24 Announced
+ 89.20.51.0/24 Announced
+ 89.37.60.0/24 Announced
+ 89.37.61.0/24 Announced
+ 89.39.184.0/24 Announced
+ 89.39.185.0/24 Announced
+ 89.40.236.0/24 Announced
+ 89.40.237.0/24 Announced
+ 91.217.106.0/24 Announced
+ 91.217.107.0/24 Announced
+ 95.215.144.0/22 Announced
+ 95.215.144.0/23 Announced
+ 95.215.146.0/23 Announced
+ 128.0.60.0/22 Announced
+ 128.0.60.0/23 Announced
+ 128.0.62.0/23 Announced
+ 141.193.108.0/22 Announced
+ 141.193.108.0/23 Announced
+ 141.193.110.0/23 Announced
+ 141.193.214.0/24 Announced
+ 141.193.215.0/24 Announced
+ 162.216.138.0/24 Announced
+ 162.216.139.0/24 Announced
+ 162.250.216.0/22 Announced
+ 162.250.216.0/23 Announced
+ 162.250.218.0/23 Announced
+ 168.149.248.0/24 Announced
+ 168.149.249.0/24 Announced
+ 173.214.200.0/22 Announced
+ 173.214.200.0/23 Announced
+ 173.214.202.0/23 Announced
+ 176.111.54.0/24 Announced
+ 176.111.55.0/24 Announced
+ 188.215.12.0/22 Announced
+ 188.215.12.0/23 Announced
+ 188.215.14.0/23 Announced
+ 193.91.8.0/24 Announced
+ 193.91.9.0/24 Announced
+ 195.78.90.0/24 Announced
+ 195.78.91.0/24 Announced
+ 199.48.230.0/24 Announced
+ 199.48.231.0/24 Announced
+ 205.220.216.0/24 Announced
+ 205.220.217.0/24 Announced
+ 217.144.108.0/22 Announced
+ 217.144.108.0/23 Announced
+ 217.144.110.0/23 Announced
whois: 402609
IANA has recorded AS203872 as originally allocated by
/usr/bin/whois -h jwhois.apnic.netr "AS203872\n % 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.
% Information related to 'AS203113 - AS203887'
as-block: AS203113 - AS203887
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: 2024-11-12T15:22:00Z
last-modified: 2024-11-12T15:22:00Z
source: RIPE
% Information related to 'AS203872'
% Abuse contact for 'AS203872' is 'security@adguard.com'
aut-num: AS203872
as-name: ASL
org: ORG-ASL47-RIPE
import: from AS60068 accept ANY
export: to AS60068 announce AS203872
import: from AS51765 accept ANY
export: to AS51765 announce AS203872
import: from AS203380 accept ANY
export: to AS203380 announce AS203872
admin-c: ASLE-RIPE
tech-c: ASLE-RIPE
status: ASSIGNED
mnt-by: RIPE-NCC-END-MNT
mnt-by: ASL-213-MNT
created: 2025-11-12T13:51:42Z
last-modified: 2025-12-02T16:33:21Z
source: RIPE
abuse-c: ADGN-RIPE
remarks: noc@adguard.com
organisation: ORG-ASL47-RIPE
org-name: AdGuard Software Limited
country: CY
reg-nr: HE332952
org-type: LIR
address: Anexartisias and Athinon 79, Nora Court Flat/Office 203-205
address: 3040
address: Limassol
address: CYPRUS
phone: +35725311333
admin-c: ADGE-RIPE
tech-c: ADGE-RIPE
abuse-c: ADGN-RIPE
mnt-ref: mnt-cy-adguard-1
mnt-by: RIPE-NCC-HM-MNT
mnt-by: mnt-cy-adguard-1
created: 2020-06-17T09:11:01Z
last-modified: 2026-05-13T07:41:38Z
source: RIPE # Filtered
%ERROR:201: access denied for 2401:2000:6660:0:0:0:0:13
%
% Queries from your IP address have passed the daily limit of controlled objects.
% Access from your host has been temporarily denied.
% For more information, see
% https://docs.db.ripe.net/FAQ#why-did-i-receive-an-error-201-access-denied
% This query was served by the RIPE Database Query Service version 1.122.1 (BUSA)