as-block:       AS25577 - AS25599
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:        2018-11-22T15:27:31Z
last-modified:  2018-11-22T15:27:31Z
source:         RIPE



aut-num:        AS25577
as-name:        C4L-AS
org:            ORG-MCSL9-RIPE
remarks:        ***
remarks:        Transit Customers
remarks:        ***
import:         from AS33967 accept AS33967
export:         to AS33967 announce AS-C4L
import:         from AS49485 accept AS49485
export:         to AS49485 announce AS-C4L
import:         from AS59493 accept AS59493
export:         to AS59493 announce AS-C4L
import:         from AS40513 accept AS40513
export:         to AS40513 announce AS-C4L
import:         from AS206132 accept AS206132
export:         to AS206132 announce AS-C4L
import:         from AS198864 accept AS198864
export:         to AS198864 announce AS-C4L
import:         from AS35670 accept AS35670
export:         to AS35670 announce AS-C4L
import:         from AS41415 accept AS41415
export:         to AS41415 announce AS-C4L
import:         from AS206626 accept AS-PSDGroup
export:         to AS206626 announce AS-C4L
import:         from AS202901 accept AS202901
export:         to AS202901 announce AS-C4L
import:         from AS207162 accept AS207162
export:         to AS207162 announce AS-C4L
import:         from AS199373 accept AS199373
export:         to AS199373 announce AS-C4L
import:         from AS49898 accept AS49898
export:         to AS49898 announce AS-C4L
import:         from AS60670 accept AS60670
export:         to AS60670 announce AS-C4L
import:         from AS203315 accept AS203315
export:         to AS203315 announce AS-C4L
import:         from AS203035 accept AS203035
export:         to AS203035 announce AS-C4L
import:         from AS51545 accept AS51545
export:         to AS51545 announce AS-C4L
import:         from AS62240 accept AS-CLOUVIDER
import:         from AS203897 accept AS203897
export:         to AS62240 announce AS-C4L
export:         to AS203897 announce AS-C4L
import:         from AS49823 accept AS49823
export:         to AS49823 announce AS-C4L
import:         from AS201902 accept AS201902
export:         to AS201902 announce AS-C4L
import:         from AS34499 accept AS34499
export:         to AS34499 announce AS-C4L
import:         from AS50882 accept AS50882
export:         to AS50882 announce AS-C4L
import:         from AS39846 accept AS39846
export:         to AS39846 announce AS-C4L
import:         from AS59870 accept AS59870
export:         to AS59870 announce AS-C4L
import:         from AS198080 accept AS198080
export:         to AS198080 announce AS-C4L
import:         from AS29697 accept AS-CNS
export:         to AS29697 announce AS-C4L
import:         from AS201862 accept AS201862
export:         to AS201862 announce AS-C4L
import:         from AS33446 accept AS33446
export:         to AS33446 announce AS-C4L
import:         from AS60793 accept AS60793
export:         to AS60793 announce AS-C4L
import:         from AS60253 accept AS60253
export:         to AS60253 announce AS-C4L
import:         from AS15988 accept AS15988
export:         to AS15988 announce AS-C4L
import:         from AS60969 accept AS60969
export:         to AS60969 announce AS-C4L
import:         from AS61373 accept AS61373
export:         to AS61373 announce AS-C4L
import:         from AS41477 accept AS41477
export:         to AS41477 announce AS-C4L
import:         from AS57907 accept AS57907
export:         to AS57907 announce AS-C4L
import:         from AS57937 accept AS57937
export:         to AS57937 announce AS-C4L
import:         from AS25501 accept AS25501
export:         to AS25501 announce AS-C4L
import:         from AS24851 accept AS24851
export:         to AS24851 announce AS-C4L
import:         from AS56990 accept AS56990
export:         to AS56990 announce AS-C4L
import:         from AS9163 accept AS9163
export:         to AS9163 announce AS-C4L
import:         from AS47351 accept AS47351
export:         to AS47351 announce AS-C4L
import:         from AS31273 accept AS31273
export:         to AS31273 announce AS-C4L
import:         from AS42077 accept AS42077
export:         to AS42077 announce AS-C4L
import:         from AS51823 accept AS51823
export:         to AS51823 announce AS-C4L
import:         from AS41693 accept AS41693
export:         to AS4169 announce AS-C4L
import:         from AS51198 accept AS51198
export:         to AS51198 announce AS-C4L
import:         from AS24594 accept AS24594
export:         to AS24594 announce AS-C4L
import:         from AS20952 accept AS20952
export:         to AS20952 announce AS-C4L
import:         from AS12433 accept AS12433
export:         to AS12433 announce AS-C4L
import:         from AS39925 accept AS39925
export:         to AS39925 announce AS-C4LPeers
import:         from AS50023 accept AS50023
export:         to AS50023 announce AS-C4L
import:         from AS39592 accept AS39592
export:         to AS39592 announce AS-C4L
import:         from AS41246 accept AS41246
export:         to AS41246 announce AS-C4L
import:         from AS48620 accept AS48620
export:         to AS4862 announce AS-C4L
import:         from AS34660 accept AS34660
export:         to AS34660 announce ANY
import:         from AS12870 accept AS12870
export:         to AS12870 announce ANY
import:         from AS47571 accept AS47571
export:         to AS47571 announce ANY
import:         from AS44801 accept AS-DTNET
export:         to AS44801 announce ANY
import:         from AS39674 accept AS39674
export:         to AS39674 announce ANY
import:         from AS30967 accept AS30967
export:         to AS30967 announce ANY
import:         from AS20807 accept AS20807
export:         to AS20807 announce ANY
import:         from AS31196 accept AS31196
export:         to AS31196 announce ANY
import:         from AS34270 accept AS-INETC
export:         to AS34270 announce ANY
import:         from AS34539 accept AS34539
export:         to AS34539 announce ANY
import:         from AS34442 accept AS-XIFOS
export:         to AS34442 announce ANY
import:         from AS35591 accept AS-PROVIDERONE
export:         to AS35591 announce ANY
import:         from AS34446 accept AS-LVDX
export:         to AS34446 announce ANY
import:         from AS35037 accept AS-SKYCO
export:         to AS35037 announce ANY
import:         from AS35799 accept AS-KNOWNFUTURE
export:         to AS35799 announce ANY
import:         from AS28757 accept AS28757
export:         to AS28757 announce ANY
import:         from AS29297 accept AS29297
export:         to AS29297 announce ANY
import:         from AS29006 accept AS-POBOX
export:         to AS29006 announce ANY
import:         from AS25134 accept AS25134
export:         to AS25134 announce ANY
import:         from AS35575 accept AS-VAIONI
export:         to AS35575 announce ANY
import:         from AS34334 accept AS-ARETI
export:         to AS34334 announce ANY
import:         from AS43551 accept AS43551
export:         to AS43551 announce ANY
import:         from AS24842 accept AS-DHMS
export:         to AS24842 announce ANY
import:         from AS16552 accept AS16552
export:         to AS16552 announce ANY
import:         from AS47778 accept AS47778
export:         to AS47778 announce ANY
remarks:        Hosting Systems UK Private Peering
import:         from AS34282 accept AS34282
export:         to AS34282 announce ANY
remarks:        UK Dedicated Transit
import:         from AS48231 accept AS48231
export:         to AS48231 announce ANY
remarks:        Thinkgrid
remarks:        Transversal
import:         from AS47999 accept AS47999
export:         to AS47999 announce ANY
remarks:        Noomobile
import:         from AS47546 accept AS47546
export:         to AS47546 announce ANY
remarks:        EurISP
import:         from AS34811 accept AS34811
export:         to AS34811 announce ANY
remarks:        Orbis Telecom
import:         from AS43935 accept AS43935
export:         to AS43935 announce ANY
remarks:        Contactual
import:         from AS44965 accept AS44965
export:         to AS44965 announce ANY
remarks:        DigiMedia
import:         from AS36983 accept AS36983
export:         to AS36983 announce ANY
remarks:        Upstream Internet
import:         from AS41255 accept AS41255
export:         to AS41255 announce ANY
remarks:        Selection Services Ltd
import:         from AS49503 accept AS-SELECTION
export:         to AS49503 announce ANY
remarks:        Thermeon BGP
import:         from AS43664 accept AS43664
export:         to AS43664 announce ANY
remarks:        One Connect
import:         from AS59581 accept AS59581
export:         to AS59581 announce AS-C4L
remarks:        Interfax Communications
import:         from AS41866 accept AS41866
export:         to AS41866 announce AS-C4L
remarks:        WebAge Limited
import:         from AS34243 accept AS-WEBAGE
export:         to AS34243 announce ANY
remarks:        Accesspoint Technologies
import:         from AS60103 accept AS-ACCESSPT
export:         to AS60103 announce AS-C4L
remarks:        **********************************
remarks:        *** Transit Suppliers ***
remarks:        **********************************
remarks:        NTT
import:         from AS2914 accept ANY
export:         to AS2914 announce AS-C4L
remarks:        TINET
import:         from AS3257 accept ANY
export:         to AS3257 announce AS-C4L
remarks:        Seabone
import:         from AS6762 accept ANY
export:         to AS6762 announce AS-C4L
remarks:        **********************************
remarks:        *** LINX/LONAP & Private Peers ***
remarks:        **********************************
import:         from AS-C4LPeers accept PeerAS
export:         to AS-C4LPeers announce AS-C4L
remarks:        **********************************
remarks:        *** Full Transit Customers ***
remarks:        **********************************
import:         from AS-C4L accept PeerAS
export:         to AS-C4L announce ANY
admin-c:        AA46272-RIPE
tech-c:         AA46272-RIPE
status:         ASSIGNED
mnt-by:         RIPE-NCC-END-MNT
mnt-by:         lir-uk-frame-1-MNT
created:        2003-01-15T11:46:06Z
last-modified:  2026-03-03T11:00:16Z
source:         RIPE

organisation:   ORG-MCSL9-RIPE
org-name:       MAINFRAME & CYBERNETIC SYSTEMS LIMITED
country:        GB
org-type:       LIR
address:        New Broad Street House, 35 New Broad Street
address:        EC2M 1NH
address:        London
address:        UNITED KINGDOM
phone:          +442045830986
e-mail:         frank@bec.uk
admin-c:        AA46272-RIPE
tech-c:         AA46272-RIPE
abuse-c:        AR79596-RIPE
mnt-ref:        lir-uk-frame-1-MNT
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         lir-uk-frame-1-MNT
created:        2026-02-12T08:10:24Z
last-modified:  2026-02-12T08:10:24Z
source:         RIPE

role:           Admin
address:        UNITED KINGDOM
address:        London
address:        EC2M 1NH
address:        New Broad Street House, 35 New Broad Street
phone:          +442045830986
e-mail:         frank@bec.uk
nic-hdl:        AA46272-RIPE
mnt-by:         lir-uk-frame-1-MNT
created:        2026-02-12T08:10:24Z
last-modified:  2026-02-12T08:10:24Z
source:         RIPE