157.203.42.0/23

AS21369 · Atos IT Services UK Ltd

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Summary

Country	United Kingdom
Domain	atos.net
ASN	AS21369
Registry	RIPE
ID	UK-ATOSUK-20070407

WHOIS Details

inetnum:        157.203.0.0 - 157.203.255.255
netname:        UK-ATOSUK-20070407
country:        GB
org:            ORG-AISU1-RIPE
admin-c:        ATOS5-RIPE
tech-c:         ATOS5-RIPE
status:         ALLOCATED PA
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         SEMA-UK-AS-MNT
mnt-lower:      SEMA-UK-AS-MNT
mnt-routes:     SEMA-UK-AS-MNT
created:        2015-06-19T12:07:34Z
last-modified:  2023-01-04T11:09:51Z
source:         RIPE
abuse-email:    uk.abuse@atos.net
abuse-c:        AA30342-RIPE
abuse-org:      ORG-AISU1-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:         uk.abuse@atos.net
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:         UK.Abuse@atos.net
abuse-mailbox:  UK.Abuse@atos.net
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

route:          157.203.0.0/16
descr:          ATOS Origin IT
origin:         AS21369
mnt-by:         SEMA-UK-AS-MNT
created:        2005-02-04T15:58:50Z
last-modified:  2005-08-08T07:53:20Z
source:         RIPE

Nearby Ranges

BGP prefixes that overlap with 157.203.0.0/16

No nearby ranges found.

Hosted domains

There are 5 domain names hosted across 4 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
157.203.42.162	nationalexpresseastcoast.com	2
157.203.43.107	ohportal.co.uk	1

Hosted domains API

Our Hosted Domains API, or Reverse IP API returns a full list of domains that are hosted on a single IP address.

Useful for Cybersecurity

Read more

Pingable IPs

4 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address	ASN	Details
157.203.42.2	AS21369 Atos IT Services UK Ltd	`5.04ms` from London, GB
157.203.43.1	AS21369 Atos IT Services UK Ltd	`10.97ms` from London, GB

Other Pingable IPs

Below is a random selection of 25 IPs that replied to an ICMP ping during our most recent internet scan.

IP Address	ASN	Details
105.108.241.231	AS36947 Telecom Algeria	`14.53ms` from Algiers, DZ
44.208.228.135	AS14618 Amazon.com, Inc.	`0.62ms` from Ashburn, US
1.29.116.39	AS4837 CHINA UNICOM China169 Backbone	`10.00ms` from Changchun, CN
75.210.170.215	AS6167 Verizon Business	`9.72ms` from Chicago, US
83.186.73.183	AS1257 Tele2 Sverige AB	`3.90ms` from Falkenberg, SE
172.81.109.23	AS140042 Zhipinshang (Hongkong) Electron Communication Technology Limited	`0.20ms` from Hong Kong, HK
47.75.168.135	AS45102 Alibaba (US) Technology Co., Ltd.	`1.45ms` from Hong Kong, HK
90.213.190.247	AS5607 Sky UK Limited	`5.67ms` from London, GB
24.24.161.231	AS20001 Charter Communications Inc	`5.29ms` from Los Angeles, US
81.34.18.167	AS3352 TELEFONICA DE ESPANA S.A.U.	`1.75ms` from Madrid, ES
66.189.214.151	AS20115 Charter Communications LLC	`18.87ms` from San Jose, US
106.103.204.167	AS3786 LG DACOM Corporation	`1.73ms` from Seoul, KR
13.236.106.55	AS16509 Amazon.com, Inc.	`0.10ms` from Sydney, AU
110.182.219.119	AS4134 CHINANET-BACKBONE	`6.37ms` from Taiyuan, CN
173.73.253.231	AS701 Verizon Business	`1.77ms` from Ashburn, US
78.92.98.247	AS5483 Magyar Telekom Plc.	`4.79ms` from Budapest, HU
164.100.158.23	AS4758 National Informatics Centre	`0.96ms` from Delhi, IN
116.31.73.135	AS4134 CHINANET-BACKBONE	`1.80ms` from Guangzhou, CN
115.76.27.7	AS7552 Viettel Group	`3.44ms` from Ho Chi Minh City, VN
45.202.173.215	AS136907 HUAWEI CLOUDS	`1.11ms` from Hong Kong, HK
117.92.210.151	AS4134 CHINANET-BACKBONE	`10.70ms` from Huai'an, CN
169.147.211.183	AS11659 University of Kansas Medical Center	`2.34ms` from Kansas City, US
103.186.56.215	AS38141 PT. Citramedia Network	`7.43ms` from Kolkata, IN
104.192.16.23	AS2568 Digicom	`8.89ms` from Montreal, CA
148.253.73.231	AS50624 Outscale SASU	`0.84ms` from Paris, FR

Traceroute

Below is a recent traceroute taken from the IPinfo ProbeNet to an IP in this range. Learn more.

traceroute -a -n -q1 -m5 157.203.43.45

traceroute to 157.203.43.45 (157.203.43.45): 5 hops max, 52 byte packets

1 [AS28099] 37.235.52.2 1.263 ms

2 [AS28099] 190.3.172.129 3.907 ms

3 *

4 *

5 *

Measurement taken from

IPinfo ProbeNet in Vina del Mar, CL

On January 9th 2026

What are IP address ranges?

IP address ranges, or netblocks, are groups of related IP addresses. They are usually represented as a base IP address, followed by a slash, and then a netmask which represents how many IP addresses are contained within the netblock. This format is known as CIDR. You'll also sometimes see netblocks given as a start ip address, and an end ip address, or an ip address range.

Traffic works its way around the internet based on the routing table, which contains a list of networks and their associated netblocks.

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