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.
AS21155 5 More Specifics 20 Total Advertisements ASN-PROSERVE Amsterdam, NL
81.4.112.0/22 81.4.112.0/21
81.4.116.0/22 81.4.112.0/21
141.255.176.0/22 141.255.176.0/21
185.192.132.0/24 185.192.132.0/22
194.61.64.0/24 194.61.64.0/23
Prefixes added and withdrawn by this origin AS in the past 7 days.
+ 91.198.87.0/24 Announced
+ 141.255.176.0/22 Announced
+ 185.192.132.0/24 Announced
+ 194.61.64.0/24 Announced
whois: 402590
IANA has recorded AS21155 as originally allocated by
/usr/bin/whois -h jwhois.apnic.netr "AS21155\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 'AS21153 - AS21241'
as-block: AS21153 - AS21241
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: 2018-11-22T15:27:27Z
last-modified: 2018-11-22T15:27:27Z
source: RIPE
% Information related to 'AS21155'
% Abuse contact for 'AS21155' is 'abuse@signet.nl'
aut-num: AS21155
as-name: ASN-PROSERVE
descr: Amsterdam, NL
org: ORG-SI6-RIPE
remarks: = Transit Customers =
import: from AS61161 accept AS61161
export: to AS61161 announce {0.0.0.0/0}
admin-c: SGNT1-RIPE
tech-c: SGNT1-RIPE
status: ASSIGNED
mnt-by: RIPE-NCC-END-MNT
mnt-by: SIGNET-MNT
created: 2002-01-04T21:15:49Z
last-modified: 2025-12-01T10:19:22Z
source: RIPE
organisation: ORG-SI6-RIPE
org-name: Signet B.V.
country: NL
reg-nr: 17089930
org-type: LIR
address: Achtseweg Zuid 241 B
address: 5651GW
address: Eindhoven
address: NETHERLANDS
phone: +31885999999
admin-c: AR22154-RIPE
admin-c: SNaA1-RIPE
admin-c: JS9938-RIPE
admin-c: RB1994-RIPE
abuse-c: SAD68-RIPE
mnt-ref: RIPE-NCC-HM-MNT
mnt-ref: SIGNET-MNT
mnt-by: RIPE-NCC-HM-MNT
mnt-by: SIGNET-MNT
created: 2004-04-17T11:43:17Z
last-modified: 2026-05-13T07:18:32Z
source: RIPE # Filtered
role: Signet B.V. Technical Role Account
address: Signet B.V.
address: Science Park Eindhoven 5218
address: 5692 EG Son
address: The Netherlands
phone: +31 40 7074907
phone: +31 40 7074909
abuse-mailbox: abuse@signet.nl
admin-c: RB1994-RIPE
admin-c: JS9938-RIPE
tech-c: RB1994-RIPE
tech-c: JS9938-RIPE
remarks: ==========================================
remarks: Please send abuse mail to abuse@signet.nl,
remarks: technical issues to noc@signet.nl and
remarks: peering requests to peering@signet.nl.
remarks: ==========================================
nic-hdl: SGNT1-RIPE
mnt-by: SIGNET-MNT
created: 2014-04-03T08:32:01Z
last-modified: 2025-07-07T08:56:13Z
source: RIPE # Filtered
% This query was served by the RIPE Database Query Service version 1.122.1 (DEXTER)