This AS is not currently used to announce prefixes in the global routing table, nor is it used as a visible transit AS.
whois: 402603
IANA has recorded AS51820 as originally allocated by
/usr/bin/whois -h jwhois.apnic.netr "AS51820\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 'AS51819 - AS51843'
as-block: AS51819 - AS51843
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: 2026-02-02T15:31:00Z
last-modified: 2026-02-02T15:31:00Z
source: RIPE
% Information related to 'AS51820'
% Abuse contact for 'AS51820' is 'abuse@ip-plus.net'
aut-num: AS51820
as-name: SBC-NET
org: ORG-SBC1-RIPE
import: from AS3303 accept ANY
import: from AS6837 accept ANY
import: from AS9121 accept ANY
export: to AS3303 announce AS51820
export: to AS6837 announce AS51820
export: to AS9121 announce AS51820
admin-c: SIE3-RIPE
tech-c: SIE3-RIPE
status: ASSIGNED
mnt-by: RIPE-NCC-END-MNT
mnt-by: CH-UNISOURCE-MNT
created: 2010-11-11T10:19:42Z
last-modified: 2021-04-15T11:39:52Z
source: RIPE
sponsoring-org: ORG-SI1-RIPE
organisation: ORG-SBC1-RIPE
org-name: Swisscom Broadcast Ltd
country: CH
reg-nr: CHE-109.334.608
org-type: OTHER
address: Ostermundigenstrasse 99
address: CH-3050 Bern
abuse-c: AR26028-RIPE
mnt-ref: CH-UNISOURCE-MNT
mnt-by: CH-UNISOURCE-MNT
created: 2010-11-08T13:59:17Z
last-modified: 2026-05-13T05:11:06Z
source: RIPE # Filtered
role: Swisscom IP-Plus Engineering
address: CH-3050 Bern
address: Switzerland
org: ORG-SI1-RIPE
abuse-mailbox: abuse@ip-plus.net
admin-c: AC2332-RIPE
tech-c: AC2332-RIPE
tech-c: AC19120-RIPE
tech-c: AF482-RIPE
tech-c: JANB-RIPE
tech-c: CE2871-RIPE
tech-c: AN33440-RIPE
tech-c: MH20294-RIPE
tech-c: EF6111-RIPE
nic-hdl: SIE3-RIPE
mnt-by: ch-unisource-admin-mnt
created: 2002-08-16T15:08:51Z
last-modified: 2024-02-06T15:14:38Z
source: RIPE # Filtered
% This query was served by the RIPE Database Query Service version 1.122.1 (DEXTER)