AS Number
AS21369
AS Name
SEMA-UK-AS
Org Name
Atos IT Services UK Ltd
Registry

ripe

RegDate

N/A

Updated

2023-01-03T10:00:37Z

AS21369 Looking Glass
IPv4Prefixes

31

IPv6Prefixes

0

IPv4 NUMs

7,936

IPv6 NUMs(/64)

0

7,936 IPv4 Addresses
CIDR Description IP Num
157.203.6.0/24 Atos IT Services UK Ltd 256
157.203.7.0/24 Atos IT Services UK Ltd 256
157.203.36.0/24 Atos IT Services UK Ltd 256
157.203.37.0/24 Atos IT Services UK Ltd 256
157.203.40.0/24 Atos IT Services UK Ltd 256
157.203.41.0/24 Atos IT Services UK Ltd 256
157.203.42.0/24 Atos IT Services UK Ltd 256
157.203.43.0/24 Atos IT Services UK Ltd 256
157.203.48.0/24 Atos IT Services UK Ltd 256
157.203.49.0/24 Atos IT Services UK Ltd 256
157.203.52.0/24 Atos IT Services UK Ltd 256
157.203.53.0/24 Atos IT Services UK Ltd 256
157.203.56.0/24 Atos IT Services UK Ltd 256
157.203.57.0/24 Atos IT Services UK Ltd 256
157.203.59.0/24 Atos IT Services UK Ltd 256
157.203.60.0/24 Atos IT Services UK Ltd 256
157.203.61.0/24 Atos IT Services UK Ltd 256
157.203.62.0/24 Atos IT Services UK Ltd 256
157.203.120.0/24 Atos IT Services UK Ltd 256
157.203.142.0/24 Atos IT Services UK Ltd 256
157.203.143.0/24 Atos IT Services UK Ltd 256
157.203.176.0/24 Atos IT Services UK Ltd 256
157.203.177.0/24 Atos IT Services UK Ltd 256
157.203.178.0/24 Atos IT Services UK Ltd 256
157.203.179.0/24 Atos IT Services UK Ltd 256
157.203.180.0/24 Atos IT Services UK Ltd 256
157.203.181.0/24 Atos IT Services UK Ltd 256
157.203.242.0/24 Atos IT Services UK Ltd 256
157.203.243.0/24 Atos IT Services UK Ltd 256
157.203.254.0/24 Atos IT Services UK Ltd 256
157.203.255.0/24 Atos IT Services UK Ltd 256
AS Description Country/Region IPv4 NUMs IPv6 NUMs IPv4 IPv6
AS702 UUNET - Verizon Business, US United States 5,939,968 77,309,739,008 IPv4 IPv4
AS2856 BT-UK-AS - British Telecommunications PLC, GB United Kingdom 12,271,616 549,756,141,568 IPv4 IPv4
AS6461 ZAYO-6461 - Zayo Bandwidth, US United States 1,675,008 18,255,118,336 IPv4 IPv4
IP Address Domain NUMs Domains
157.203.6.36 1 staff.beh-mht.nhs.uk
157.203.6.40 1 gateway.beh-mht.nhs.uk
157.203.6.42 5 barnet-web.deployed.sitekit.net
157.203.6.49 1 ras.beh-mht.nhs.uk
157.203.6.98 1 gateway.whht.nhs.uk
157.203.6.152 1 careeverywhere.apollo.atoshls.net
157.203.6.160 1 aegon.atos.net
as-block:       AS21281 - AS21390
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:        2018-11-22T15:27:28Z
last-modified:  2018-11-22T15:27:28Z
source:         RIPE



aut-num:        AS21369
as-name:        SEMA-UK-AS
org:            ORG-AISU1-RIPE
remarks:        Will advertise network 192.12.43.0/24
remarks:        ------------------------------------------------------
remarks:        *
remarks:        Verizon Peering
remarks:        *
remarks:        ------------------------------------------------------
import:         from AS702 action pref=100; accept ANY
export:         to AS702 announce AS21369
remarks:        ------------------------------------------------------
remarks:        *
remarks:        Level3 Peering
remarks:        *
remarks:        ------------------------------------------------------
import:         from AS3356 action pref=100; accept ANY
import:         from AS3549 action pref=100; accept ANY
export:         to AS3356 announce AS21369
export:         to AS3549 announce AS21369
remarks:        ------------------------------------------------------
remarks:        *
remarks:        Zayo Peering
remarks:        *
remarks:        ------------------------------------------------------
import:         from AS6461 action pref=100; accept ANY
export:         to AS6461 announce AS21369
remarks:        ------------------------------------------------------
remarks:        *
remarks:        ConvergenceGroup Peering
remarks:        *
remarks:        ------------------------------------------------------
import:         from AS41811 action pref=100; accept ANY
export:         to AS41811 announce AS21369
remarks:        ------------------------------------------------------
remarks:        *
remarks:        BGP Off-ramping Peering
remarks:        *
remarks:        ------------------------------------------------------
import:         from AS198949 action pref=100; accept ANY
export:         to AS198949 announce AS21369
remarks:        ------------------------------------------------------
remarks:        *
remarks:        Legacy peerings for review
remarks:        *
remarks:        ------------------------------------------------------
export:         to AS8918 announce AS21369
import:         from AS8918 action pref=100; accept ANY
import:         from AS2856 action pref=100; accept ANY
default:        to AS2856 action pref=100; networks ANY
remarks:        ------------------------------------------------------
remarks:        *
remarks:        Last modified by Shared Services 03-01-2023
admin-c:        ATOS5-RIPE
tech-c:         ATOS5-RIPE
status:         ASSIGNED
mnt-by:         RIPE-NCC-END-MNT
mnt-by:         SEMA-UK-AS-MNT
created:        2001-11-15T09:27:21Z
last-modified:  2023-01-03T10:00:37Z
source:         RIPE

organisation:   ORG-AISU1-RIPE
org-name:       Atos IT Services UK Ltd
country:        GB
org-type:       LIR
address:        Second Floor, Mid City Place, 71 High Holborn,
address:        WC1V 6EA
address:        London
address:        UNITED KINGDOM
phone:          +448007833040
fax-no:         +441616018842
e-mail:         [email protected]
admin-c:        ATOS5-RIPE
tech-c:         ATOS5-RIPE
abuse-c:        AA30342-RIPE
mnt-by:         SEMA-UK-AS-MNT
mnt-ref:        SEMA-UK-AS-MNT
mnt-ref:        RIPE-NCC-HM-MNT
mnt-by:         RIPE-NCC-HM-MNT
created:        2013-05-30T09:12:57Z
last-modified:  2022-12-16T16:54:22Z
source:         RIPE

role:           ATOS Admin
address:        3300 Solihull Parkway
address:        Birmingham Business Park
address:        B37 7YQ
e-mail:         [email protected]
abuse-mailbox:  [email protected]
nic-hdl:        ATOS5-RIPE
mnt-by:         SEMA-UK-AS-MNT
created:        2013-10-05T00:51:50Z
last-modified:  2013-10-05T03:40:17Z
source:         RIPE