204052 JENOPTIK - Jenoptik AG, DE
Adjacency: 1 Upstream: 1 Downstream: 0
Upstream Adjacent AS list
AS3320 DTAG - Deutsche Telekom AG, DE
Rank AS Type Originate Addr Space (pfx) Transit Addr space (pfx) Description 26451 AS204052 ORIGIN Originate: 2048 /21.00 Transit: 0 /0.00 JENOPTIK - Jenoptik AG, DE
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 % 18593 AS204052 JENOPTIK - Jenoptik AG, DE 3 2 0 1 2 66.67% Prefix AS Path Aggregation Suggestion 185.116.36.0/22 4777 2516 3320 204052 185.116.36.0/23 4777 2516 3320 204052 - Withdrawn - matching aggregate 185.116.36.0/22 4777 2516 3320 204052 185.116.38.0/23 4777 2516 3320 204052 - Withdrawn - matching aggregate 185.116.36.0/22 4777 2516 3320 204052
Advertisements that are fragments of the original RIR allocation (more specifics) originated by this AS.
AS204052 2 More Specifics 3 Total Advertisements JENOPTIK - Jenoptik AG, DE
185.116.36.0/23 185.116.36.0/22
185.116.38.0/23 185.116.36.0/22
whois: 402603
IANA has recorded AS204052 as originally allocated by
/usr/bin/whois -h jwhois.apnic.netr "AS204052\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 'AS204052'
% Abuse contact for 'AS204052' is 'zit-network@jenoptik.com'
aut-num: AS204052
as-name: JENOPTIK
org: ORG-JSG4-RIPE
import: from AS15725 accept ANY
export: to AS15725 announce AS204052
import: from AS8881 accept ANY
export: to AS8881 announce AS204052
import: from AS3320 accept ANY
export: to AS3320 announce AS204052
admin-c: LROJ1-RIPE
tech-c: TROJ1-RIPE
status: ASSIGNED
mnt-by: RIPE-NCC-END-MNT
mnt-by: IKS-MNT
mnt-by: JENOPTIK-MNT
created: 2015-09-07T13:23:31Z
last-modified: 2025-02-13T12:32:31Z
source: RIPE
organisation: ORG-JSG4-RIPE
org-name: Jenoptik AG
country: DE
reg-nr: District court Jena HRB 200146
org-type: LIR
address: Carl-Zeiss-Str. 1
address: 07743
address: Jena
address: GERMANY
phone: +493641654830
admin-c: SL10724-RIPE
tech-c: SL10724-RIPE
abuse-c: AR32957-RIPE
mnt-ref: JENOPTIK-MNT
mnt-ref: RIPE-NCC-HM-MNT
mnt-by: RIPE-NCC-HM-MNT
mnt-by: JENOPTIK-MNT
created: 2015-07-20T14:18:57Z
last-modified: 2026-05-13T07:20:26Z
source: RIPE # Filtered
%ERROR:201: access denied for 2401:2000:6660:0:0:0:0:13
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% This query was served by the RIPE Database Query Service version 1.122.1 (SHETLAND)