AS Number
AS57653
AS Name
CTL-AS
Org Name
Central Technology Ltd
Registry

ripe

RegDate

Updated

2025-04-24T14:15:44Z

AS57653 Looking Glass
IPv4Prefixes

5

IPv6Prefixes

1

IPv4 NUMs

3,840

IPv6 NUMs(/64)

4,294,967,296

3,840 IPv4 Addresses
CIDR Description IP Num
45.149.241.0/24
ROA Signed and Valid IRR InValid
Central Technology Ltd 256
94.156.96.0/24
ROA Signed and Valid IRR Valid
Central Technology Ltd 256
94.156.186.0/24
ROA Signed and Valid IRR Valid
Central Technology Ltd 256
109.69.232.0/21
ROA Signed and Valid IRR InValid
Central Technology Ltd 2048
185.191.84.0/22
ROA Signed and Valid IRR InValid
Central Technology Ltd 1024
CIDR Description IP NUMs(prefix /64)
2a00:1ba8::/32
ROA Signed and Valid IRR Valid
Central Technology Ltd 4294967296
AS Description Country/Region IPv4 NUMs IPv6 NUMs IPv4 IPv6
AS174 COGENT-174 - Cogent Communications, LLC, US United States 36,269,568 215,834,755,073 IPv4 IPv4 IPv6 IPv6
AS2914 NTT-DATA-2914 - NTT America, Inc., US United States 6,308,096 30,065,033,216 IPv4 IPv4 IPv6 IPv6
AS24482 SGGS-AS-AP - SG.GS, SG Singapore 20,992 4,294,967,296 IPv4 IPv4 IPv6 IPv6
AS39351 ESAB-AS - 31173 Services AB, SE Sweden 14,592 4,296,146,944 IPv4 IPv4
AS52075 WIFIRST - Wifirst S.A.S., FR France 132,352 34,359,738,368 IPv4 IPv4 IPv6 IPv6
AS3741 NTT-DATA-Inc - Dimension Data, ZA South Africa 2,964,992 137,439,084,544 IPv4 IPv4
AS6204 ZET-NET - INTERKVM HOST SRL, RO Romania 2,560 268,501,000 IPv4 IPv4 IPv6 IPv6
AS6939 HURRICANE - Hurricane Electric LLC, US United States 456,704 282,627,370,713,088 IPv4 IPv4 IPv6 IPv6
AS7575 AARNET-AS-AP - Australian Academic and Research Network, AU Australia 1,154,816 90,194,444,288 IPv4 IPv4 IPv6 IPv6
AS15412 FLAG-AS - Flag Telecom UK Limited, GB United Kingdom 34,048 4,294,967,296 IPv4 IPv4
AS30844 LIQUID-AS - Liquid Telecommunications Ltd, GB United Kingdom 370,176 38,654,705,664 IPv4 IPv4 IPv6 IPv6
AS61573 IP TELECOM, BR Brazil 1,024 4,294,967,296 IPv4 IPv4 IPv6 IPv6
AS5405 INTERDOTLINK - Inter.link GmbH, DE Germany 3,072 34,359,738,368 IPv4 IPv4 IPv6 IPv6
AS9002 RETN-AS - RETN Limited, GB United Kingdom 43,264 4,294,967,296 IPv6 IPv6
AS6057 Administracion Nacional de Telecomunicaciones, UY Uruguay 2,155,520 68,719,476,736 IPv4 IPv4 IPv6 IPv6
AS7195 EDGEUNO S.A.S, CO Colombia 32,000 4,274,061,312 IPv4 IPv4 IPv6 IPv6
AS137409 GSLNETWORKS-AS-AP - GSL Networks Pty LTD, AU Australia 123,136 77,422,723,074 IPv4 IPv4 IPv6 IPv6
as-block:       AS57370 - AS57973
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:        2025-04-24T14:15:44Z
last-modified:  2025-04-24T14:15:44Z
source:         RIPE



aut-num:        AS57653
as-name:        CTL-AS
org:            ORG-CTL23-RIPE
import:         from AS39326 accept ANY
import:         from AS31727 accept ANY
export:         to AS39326 announce AS57653
export:         to AS31727 announce AS57653
admin-c:        CB3871
tech-c:         CB3871
status:         ASSIGNED
mnt-by:         RIPE-NCC-END-MNT
mnt-by:         MNT-CTL
created:        2011-12-29T10:26:42Z
last-modified:  2017-11-15T12:23:33Z
source:         RIPE

organisation:   ORG-CTL23-RIPE
org-name:       Central Technology Ltd
country:        GB
reg-nr:         04579191
org-type:       LIR
address:        Quantum Point
                Sheepbridge Lane
address:        S41 9RX
address:        Chesterfield
address:        UNITED KINGDOM
phone:          +448454138888
fax-no:         +448454138877
e-mail:         [email protected]
mnt-ref:        RIPE-NCC-HM-MNT
mnt-ref:        MNT-CTL
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         MNT-CTL
abuse-c:        CTLA1-RIPE
created:        2009-10-14T12:25:19Z
last-modified:  2026-05-13T07:08:19Z
source:         RIPE

person:         Christopher Barr
address:        Central Technology Ltd, Quantum Point, Sheepbridge Lane, Chesterfield, Derbyshire, S41 9RX
phone:          +441246266130
e-mail:         [email protected]
nic-hdl:        CB3871
mnt-by:         MNT-CTL
created:        2009-10-15T13:10:58Z
last-modified:  2024-02-02T15:07:18Z
source:         RIPE