203997 XTDEF, HK
Adjacency: 3 Upstream: 3 Downstream: 0
Upstream Adjacent AS list
AS61138 ZAPPIE-HOST-AS Zappie Host, US
AS35661 VIRTUASYS-EU Lift weight. Push bytes. Never drop. Repeat., FR
AS40994 ALWYZON Alwyzon, a trading name of Hohl IT e.U., AT
Rank AS Type Originate Addr Space (pfx) Transit Addr space (pfx) Description 31599 AS203997 ORIGIN Originate: 1536 /21.42 Transit: 0 /0.00 XTDEF, HK
Aggregation Suggestions
Filter: Aggregates, Specifics
This report does not take into account conditions local to each origin AS in terms of policy or traffic engineering requirements, so this is an approximate guideline as to aggregation possibilities.
Rank AS AS Name Current Wthdw Aggte Annce Redctn % 62729 AS203997 XTDEF, HK 6 0 0 6 0 0.00% Prefix AS Path Aggregation Suggestion 81.18.60.0/24 4777 2516 3257 40994 203997 87.76.184.0/24 4608 64073 61138 203997 89.23.94.0/24 4777 2516 3257 35661 203997 91.217.223.0/24 4608 7575 2914 40994 203997 151.244.252.0/24 4777 2516 3257 40994 203997 179.61.243.0/24 4777 2516 3257 35661 203997
Advertisements that are fragments of the original RIR allocation (more specifics) originated by this AS.
AS203997 5 More Specifics 6 Total Advertisements XTDEF, HK
81.18.60.0/24 81.18.48.0/20
87.76.184.0/24 87.76.128.0/18
89.23.94.0/24 89.23.64.0/19
151.244.252.0/24 151.244.0.0/16
179.61.243.0/24 179.61.128.0/17
Prefixes added and withdrawn by this origin AS in the past 7 days.
+ 91.217.223.0/24 Announced
+ 179.61.243.0/24 Announced
whois: 402332
IANA has recorded AS203997 as originally allocated by
/usr/bin/whois -h jwhois.apnic.netr "AS203997\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 '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 'AS203997'
% Abuse contact for 'AS203997' is 'abuse@xtdef.com'
aut-num: AS203997
as-name: xtdef
org: ORG-XL122-RIPE
import: from AS40994 accept ANY
import: from AS20473 accept ANY
import: from AS35661 accept ANY
import: from AS61138 accept ANY
export: to AS40994 announce AS203997
export: to AS20473 announce AS203997
export: to AS35661 announce AS203997
export: to AS61138 announce AS203997
admin-c: NA9455-RIPE
tech-c: NA9455-RIPE
status: ASSIGNED
mnt-by: RIPE-NCC-END-MNT
mnt-by: XTD-RIPE-MNT
created: 2025-11-05T16:00:00Z
last-modified: 2026-03-22T08:33:49Z
source: RIPE
organisation: ORG-XL122-RIPE
org-name: XTDef Limited
country: HK
org-type: LIR
address: Room 1405, 135 Bonham Strand Trade Centre, 135 Bonham Strand
address: 000
address: Sheung Wan
address: HONG KONG
phone: +85239563112
admin-c: NA9455-RIPE
tech-c: NA9455-RIPE
abuse-c: AR78978-RIPE
mnt-ref: XTD-RIPE-MNT
mnt-ref: netutils-mnt
mnt-by: RIPE-NCC-HM-MNT
mnt-by: XTD-RIPE-MNT
created: 2025-10-28T07:40:24Z
last-modified: 2026-01-16T15:16:20Z
source: RIPE # Filtered
%ERROR:201: access denied for 2401:2000:6660:0:0:0:0:13
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% Access from your host has been temporarily denied.
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% This query was served by the RIPE Database Query Service version 1.121.2 (ABERDEEN)