AS50300 NSP
CUSTDC
CustodianDC Limited
GB
41
IPv4 Prefixes
8
IPv6 Prefixes
0
peering network
3
IX Points
13
Facilities
AS Name
CUSTDC
Registration Date
2009-12-16T10:53:17Z
Update Date
2026-03-20T11:03:05Z
IPv4 Prefixes (41)
92.118.16.0/24 185.48.167.0/24 185.14.164.0/22 176.12.106.0/24 176.12.108.0/24 176.12.107.0/24 176.12.109.0/24 193.33.198.0/24 5.102.174.0/24 185.42.65.0/24 185.48.166.0/24 109.74.240.0/24 109.74.250.0/24 109.74.251.0/24 185.32.72.0/24 176.12.104.0/24 109.74.243.0/24 109.74.247.0/24 109.74.248.0/24 109.74.252.0/24 +21 个
IPv6 Prefixes (8)
2a00:1c10:10::/44 2a00:1c10:fff0::/44 2a00:1c10::/44 2a00:1c10:40::/44 2a00:1c10:100::/40 2a00:1c10:cd0::/44 2a00:1c10:da2::/48 2a00:1c10:30::/44
AS50300 network topology (Upstream/Downstream)
Facility List (13)
Name City Country
Telehouse - London (Docklands North) London GB
Telehouse - London (Docklands East) London GB
Digital Realty London LHR20 London GB
Global Switch London North London GB
Digital Realty Amsterdam AMS3, AMS5-8, AMS10 Amsterdam NL
Digital Realty London LHR21 (closed) London GB
Level(3) London (Braham Street) London GB
Level(3) London (Goswell Road) London GB
Telehouse - London (Docklands West) London GB
4D Surrey Byfleet GB
Custodian CDC Maidstone 1 Maidstone GB
4D Gatwick (Crawley) Crawley GB
Custodian CDC Dartford DA2 Dartford GB
Colocated Networks (Shared Data Center)
ASN Name Type Shared Facility
AS31712 Gigastream plc NSP 9/13
AS174 Cogent Communications, Inc. NSP 9/13
AS43531 IX Reach NSP 8/13
AS4455 BSO NSP 8/13
AS39326 Syntura Group Limited NSP 7/13
AS25577 CloudCoCo Connect NSP 7/13
AS6461 Zayo NSP 7/13
AS203421 Baltic Broadband Cable/DSL/ISP 6/13
AS51945 Enlink Ltd NSP 6/13
AS44356 Epsilon NSP 6/13
AS31715 Lynk Networks Content 6/13
AS9002 RETN NSP 6/13
AS6908 Six Degrees - Datahop NSP 6/13
AS213202 The CLOUD SYSTEMS Group NSP 5/13
AS60610 Amito (AS60610) NSP 5/13
AS57463 NetIX Communications NSP 5/13
AS31463 4D Data Centres Ltd NSP 5/13
AS12536 Allegro Networks NSP 5/13
AS6774 BICS NSP 5/13
AS3257 GTT Communications (AS3257) NSP 5/13
+10 colocated networks
Raw Whois Data
aut-num:        AS50300
as-name:        CUSTDC
org:            ORG-CL129-RIPE
remarks:        =========================================================
remarks:        | IPv4 Transit Peerings |
remarks:        =========================================================
import:         from AS174 action pref=100; accept ANY
export:         to AS174 announce AS-CUSTDC
import:         from AS2914 action pref=100; accept ANY
export:         to AS2914 announce AS-CUSTDC
import:         from AS3223 action pref=10; accept ANY
export:         to AS3223 announce AS-CUSTDC
import:         from AS3356 action pref=100; accept ANY
export:         to AS3356 announce AS-CUSTDC
import:         from AS5580 action pref=100; accept ANY
export:         to AS5580 announce AS-CUSTDC
import:         from AS6939 action pref=100; accept ANY
export:         to AS6939 announce AS-CUSTDC
import:         from AS31463 action pref=10; accept ANY
export:         to AS31463 announce ANY
import:         from AS215162 action pref=10; accept ANY
export:         to AS215162 announce ANY
remarks:        =========================================================
remarks:        | IPv6 Transit Peerings |
remarks:        =========================================================
mp-import:      afi ipv6.unicast from AS174 action pref=100; accept ANY;
mp-export:      afi ipv6.unicast to AS174 announce AS-CUSTDC;
mp-import:      afi ipv6.unicast from AS2914 action pref=100; accept ANY;
mp-export:      afi ipv6.unicast to AS2914 announce AS-CUSTDC;
mp-import:      afi ipv6.unicast from AS3223 action pref=10; accept ANY;
mp-export:      afi ipv6.unicast to AS3223 announce AS-CUSTDC;
mp-import:      afi ipv6.unicast from AS3356 action pref=100; accept ANY;
mp-export:      afi ipv6.unicast to AS3356 announce AS-CUSTDC;
mp-import:      afi ipv6.unicast from AS5580 action pref=100; accept ANY;
mp-export:      afi ipv6.unicast to AS5580 announce AS-CUSTDC;
mp-import:      afi ipv6.unicast from AS6939 action pref=100; accept ANY;
mp-export:      afi ipv6.unicast to AS6939 announce AS-CUSTDC;
mp-import:      afi ipv6.unicast from AS31463 action pref=10; accept ANY;
mp-export:      afi ipv6.unicast to AS31463 announce ANY;
mp-import:      afi ipv6.unicast from AS215162 action pref=10; accept ANY;
mp-export:      afi ipv6.unicast to AS215162 announce ANY;
remarks:        =========================================================
remarks:        | Exchange Point Peerings via LINX |
remarks:        =========================================================
export:         to AS-ANY at 195.66.224.139 announce AS-CUSTDC
mp-export:      afi ipv6.unicast to AS-ANY at 2001:7F8:4::C47C:1 announce AS-CUSTDC;
remarks:        =========================================================
remarks:        | Exchange Point Peerings via AMS-IX |
remarks:        =========================================================
export:         to AS-ANY at 80.249.211.14 announce AS-CUSTDC
mp-export:      afi ipv6.unicast to AS-ANY at 2001:7f8:1::a505:300:1 announce AS-CUSTDC;
remarks:        =========================================================
remarks:        | Exchange Point Peerings via LonAP |
remarks:        =========================================================
export:         to AS-ANY at 5.57.80.96 announce AS-CUSTDC
mp-export:      afi ipv6.unicast to AS-ANY at 2001:7f8:17::c47c:1 announce AS-CUSTDC;
remarks:        =========================================================
remarks:        | Customer IPv4 Peerings |
remarks:        =========================================================
import:         from AS43408 action pref=300; accept AS43408
export:         to AS43408 announce ANY
import:         from AS48101 action pref=300; accept AS48101
export:         to AS48101 announce ANY
import:         from AS51926 action pref=300; accept AS51926
export:         to AS51926 announce ANY
import:         from AS62217 action pref=300; accept AS62217
export:         to AS62217 announce ANY
remarks:        =========================================================
remarks:        | Customer IPv6 Peerings |
remarks:        =========================================================
mp-import:      afi ipv6.unicast from AS43408 action pref=300; accept AS43408;
mp-export:      afi ipv6.unicast to AS43408 announce ANY;
mp-import:      afi ipv6.unicast from AS62217 action pref=300; accept AS62217;
mp-export:      afi ipv6.unicast to AS62217 announce ANY;
remarks:        =========================================================
remarks:        | General Contact Information |
remarks:        =========================================================
remarks:        for ABUSE reports [email protected]
remarks:        for DNS requests [email protected]
remarks:        for TECHNICAL requests [email protected]
remarks:        for PEERING requests [email protected]
remarks:        =========================================================
remarks:        | (e-mails not sent to these contacts will be ignored!) |
remarks:        =========================================================
admin-c:        DUMY-RIPE
tech-c:         DUMY-RIPE
status:         ASSIGNED
mnt-by:         RIPE-NCC-END-MNT
mnt-by:         MNT-CUSTODIAN
created:        2009-12-16T10:53:17Z
last-modified:  2026-03-20T11:03:05Z
source:         RIPE
remarks:        ****************************
remarks:        * THIS OBJECT IS MODIFIED
remarks:        * Please note that all data that is generally regarded as personal
remarks:        * data has been removed from this object.
remarks:        * To view the original object, please query the RIPE Database at:
remarks:        * http://www.ripe.net/whois
remarks:        ****************************




--- ARIN Whois ---


#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/resources/registry/whois/tou/
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/registry/whois/inaccuracy_reporting/
#
# Copyright 1997-2026, American Registry for Internet Numbers, Ltd.
#


No match found for a AS50300.


#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/resources/registry/whois/tou/
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/registry/whois/inaccuracy_reporting/
#
# Copyright 1997-2026, American Registry for Internet Numbers, Ltd.
#