17903 COGNIZANT-IN-AP Cognizant Technology Solutions India Pvt Ltd, IN
Adjacency: 13 Upstream: 13 Downstream: 0
Upstream Adjacent AS list
AS22773 ASN-CXA-ALL-CCI-22773-RDC, US
AS4657 STARHUB-INTERNET StarHub Ltd, SG
AS2856 BT-UK-AS BTnet UK Regional network, GB
AS55836 RELIANCEJIO-IN Reliance Jio Infocomm Limited, IN
AS8220 COLT COLT Technology Services Group Limited, GB
AS9299 IPG-AS-AP Philippine Long Distance Telephone Company, PH
AS9498 BBIL-AP BHARTI Airtel Ltd., IN
AS9730 BHARTITELESONIC-AS-IN-AP Bharti Telesonic Ltd, IN
AS9304 HUTCHISON-AS-AP HGC Global Communications Limited, HK
AS3356 LEVEL3, US
AS4755 TATACOMM-AS TATA Communications formerly VSNL is Leading ISP, IN
AS199569 COGNIZANT-EU-AS, GB
AS701 UUNET, US
Rank AS Type Originate Addr Space (pfx) Transit Addr space (pfx) Description 5063 AS17903 ORIGIN Originate: 36096 /16.86 Transit: 0 /0.00 COGNIZANT-IN-AP Cognizant Technology Solutions India Pvt Ltd, IN
Aggregation Suggestions
Filter: Aggregates, Specifics
This report does not take into account conditions local to each origin AS in terms of policy or traffic engineering requirements, so this is an approximate guideline as to aggregation possibilities.
Rank AS AS Name Current Wthdw Aggte Annce Redctn % 2211 AS17903 COGNIZANT-IN-AP Cognizant Technology Solution 95 43 17 69 26 27.37% Prefix AS Path Aggregation Suggestion 8.5.252.0/24 57866 3356 17903 8.5.253.0/24 6939 3356 17903 8.33.202.0/24 57866 3356 17903 8.47.80.0/24 6939 3356 17903 27.118.32.0/24 57866 6453 4755 17903 27.118.34.0/24 6939 9498 17903 27.118.35.0/24 57866 6453 4755 17903 27.118.36.0/22 6939 6453 4755 17903 27.118.36.0/24 6939 6453 4755 17903 - Withdrawn - matching aggregate 27.118.36.0/22 6939 6453 4755 17903 27.118.37.0/24 57866 6453 4755 17903 27.118.38.0/24 2914 9498 17903 27.118.39.0/24 57866 3356 17903 27.118.40.0/22 3303 2856 17903 27.118.40.0/23 6939 8220 17903 + Announce - aggregate of 27.118.40.0/24 (6939 8220 17903) and 27.118.41.0/24 (6939 8220 17903) 27.118.40.0/24 6939 8220 17903 - Withdrawn - aggregated with 27.118.41.0/24 (6939 8220 17903) 27.118.41.0/24 6939 8220 17903 - Withdrawn - aggregated with 27.118.40.0/24 (6939 8220 17903) 27.118.42.0/23 2497 6461 199569 17903 + Announce - aggregate of 27.118.42.0/24 (2497 6461 199569 17903) and 27.118.43.0/24 (2497 6461 199569 17903) 27.118.42.0/24 2497 6461 199569 17903 - Withdrawn - aggregated with 27.118.43.0/24 (2497 6461 199569 17903) 27.118.43.0/24 2497 6461 199569 17903 - Withdrawn - aggregated with 27.118.42.0/24 (2497 6461 199569 17903) 27.118.56.0/24 2497 4657 17903 116.66.130.0/24 2914 9299 17903 116.66.137.0/24 57866 6453 4755 17903 116.66.138.0/23 57866 6453 4755 17903 116.66.138.0/24 6939 9498 17903 116.66.139.0/24 57866 6453 4755 17903 - Withdrawn - matching aggregate 116.66.138.0/23 57866 6453 4755 17903 116.66.140.0/23 3303 2856 17903 116.66.140.0/23 6939 8220 17903 + Announce - aggregate of 116.66.140.0/24 (6939 8220 17903) and 116.66.141.0/24 (6939 8220 17903) 116.66.140.0/24 6939 8220 17903 - Withdrawn - aggregated with 116.66.141.0/24 (6939 8220 17903) 116.66.141.0/24 6939 8220 17903 - Withdrawn - aggregated with 116.66.140.0/24 (6939 8220 17903) 116.66.144.0/23 6939 701 17903 116.66.144.0/23 57866 3356 17903 + Announce - aggregate of 116.66.144.0/24 (57866 3356 17903) and 116.66.145.0/24 (57866 3356 17903) 116.66.144.0/24 57866 3356 17903 - Withdrawn - aggregated with 116.66.145.0/24 (57866 3356 17903) 116.66.145.0/24 57866 3356 17903 - Withdrawn - aggregated with 116.66.144.0/24 (57866 3356 17903) 116.66.146.0/23 6939 701 17903 116.66.146.0/23 57866 3356 17903 + Announce - aggregate of 116.66.146.0/24 (57866 3356 17903) and 116.66.147.0/24 (57866 3356 17903) 116.66.146.0/24 57866 3356 17903 - Withdrawn - aggregated with 116.66.147.0/24 (57866 3356 17903) 116.66.147.0/24 57866 3356 17903 - Withdrawn - aggregated with 116.66.146.0/24 (57866 3356 17903) 116.66.148.0/22 2914 9304 17903 116.66.148.0/22 6939 9299 17903 + Announce - aggregate of 116.66.148.0/23 (6939 9299 17903) and 116.66.150.0/23 (6939 9299 17903) 116.66.148.0/24 6939 9299 17903 - Withdrawn - aggregated with 116.66.149.0/24 (6939 9299 17903) 116.66.149.0/24 6939 9299 17903 - Withdrawn - aggregated with 116.66.148.0/24 (6939 9299 17903) 116.66.150.0/23 6939 9299 17903 - Withdrawn - aggregated with 116.66.148.0/23 (6939 9299 17903) 116.66.150.0/24 2914 9304 17903 116.66.151.0/24 6939 9299 17903 - Withdrawn - matching aggregate 116.66.150.0/23 6939 9299 17903 116.66.152.0/22 6939 9498 9730 17903 116.66.152.0/22 3257 6453 4755 17903 + Announce - aggregate of 116.66.152.0/23 (3257 6453 4755 17903) and 116.66.154.0/23 (3257 6453 4755 17903) 116.66.152.0/24 3257 6453 4755 17903 - Withdrawn - aggregated with 116.66.153.0/24 (3257 6453 4755 17903) 116.66.153.0/24 3257 6453 4755 17903 - Withdrawn - aggregated with 116.66.152.0/24 (3257 6453 4755 17903) 116.66.154.0/23 3257 6453 4755 17903 - Withdrawn - aggregated with 116.66.152.0/23 (3257 6453 4755 17903) 116.66.154.0/24 6939 9498 9730 17903 116.66.155.0/24 3257 6453 4755 17903 - Withdrawn - matching aggregate 116.66.154.0/23 3257 6453 4755 17903 116.66.156.0/24 293 3356 17903 116.66.157.0/24 57866 3356 17903 116.66.158.0/23 6939 9498 17903 116.66.158.0/23 57866 6453 4755 17903 + Announce - aggregate of 116.66.158.0/24 (57866 6453 4755 17903) and 116.66.159.0/24 (57866 6453 4755 17903) 116.66.158.0/24 57866 6453 4755 17903 - Withdrawn - aggregated with 116.66.159.0/24 (57866 6453 4755 17903) 116.66.159.0/24 57866 6453 4755 17903 - Withdrawn - aggregated with 116.66.158.0/24 (57866 6453 4755 17903) 174.70.203.0/24 6939 22773 17903 203.99.192.0/21 3257 6453 4755 17903 203.99.192.0/22 6939 9498 17903 203.99.192.0/23 2497 9498 17903 203.99.192.0/23 3257 6453 4755 17903 + Announce - aggregate of 203.99.192.0/24 (3257 6453 4755 17903) and 203.99.193.0/24 (3257 6453 4755 17903) 203.99.192.0/24 3257 6453 4755 17903 - Withdrawn - aggregated with 203.99.193.0/24 (3257 6453 4755 17903) 203.99.193.0/24 3257 6453 4755 17903 - Withdrawn - aggregated with 203.99.192.0/24 (3257 6453 4755 17903) 203.99.194.0/23 2497 9498 17903 203.99.194.0/23 3257 6453 4755 17903 + Announce - aggregate of 203.99.194.0/24 (3257 6453 4755 17903) and 203.99.195.0/24 (3257 6453 4755 17903) 203.99.194.0/24 3257 6453 4755 17903 - Withdrawn - aggregated with 203.99.195.0/24 (3257 6453 4755 17903) 203.99.195.0/24 3257 6453 4755 17903 - Withdrawn - aggregated with 203.99.194.0/24 (3257 6453 4755 17903) 203.99.196.0/22 2497 9498 17903 203.99.196.0/22 3257 6453 4755 17903 + Announce - aggregate of 203.99.196.0/23 (3257 6453 4755 17903) and 203.99.198.0/23 (3257 6453 4755 17903) 203.99.196.0/23 3257 6453 4755 17903 - Withdrawn - aggregated with 203.99.198.0/23 (3257 6453 4755 17903) 203.99.196.0/24 6939 9498 17903 203.99.197.0/24 57866 6453 4755 17903 203.99.198.0/23 3257 6453 4755 17903 - Withdrawn - aggregated with 203.99.196.0/23 (3257 6453 4755 17903) 203.99.198.0/23 2497 9498 17903 + Announce - aggregate of 203.99.198.0/24 (2497 9498 17903) and 203.99.199.0/24 (2497 9498 17903) 203.99.198.0/24 2497 9498 17903 - Withdrawn - aggregated with 203.99.199.0/24 (2497 9498 17903) 203.99.199.0/24 2497 9498 17903 - Withdrawn - aggregated with 203.99.198.0/24 (2497 9498 17903) 203.99.200.0/23 6939 9498 17903 203.99.202.0/24 6939 9498 17903 203.99.204.0/22 6939 9498 17903 203.99.204.0/22 3257 6453 4755 17903 + Announce - aggregate of 203.99.204.0/23 (3257 6453 4755 17903) and 203.99.206.0/23 (3257 6453 4755 17903) 203.99.204.0/23 3257 6453 4755 17903 - Withdrawn - aggregated with 203.99.206.0/23 (3257 6453 4755 17903) 203.99.204.0/24 3257 6453 4755 17903 - Withdrawn - matching aggregate 203.99.204.0/23 3257 6453 4755 17903 203.99.205.0/24 6939 9498 17903 203.99.206.0/24 3257 6453 4755 17903 - Withdrawn - aggregated with 203.99.207.0/24 (3257 6453 4755 17903) 203.99.207.0/24 3257 6453 4755 17903 - Withdrawn - aggregated with 203.99.206.0/24 (3257 6453 4755 17903) 203.99.208.0/23 6939 9498 17903 203.99.208.0/24 6939 9498 17903 - Withdrawn - matching aggregate 203.99.208.0/23 6939 9498 17903 203.99.209.0/24 57866 6453 4755 17903 203.99.210.0/23 2914 64049 55836 17903 203.99.210.0/23 3257 6453 4755 17903 + Announce - aggregate of 203.99.210.0/24 (3257 6453 4755 17903) and 203.99.211.0/24 (3257 6453 4755 17903) 203.99.210.0/24 3257 6453 4755 17903 - Withdrawn - aggregated with 203.99.211.0/24 (3257 6453 4755 17903) 203.99.211.0/24 3257 6453 4755 17903 - Withdrawn - aggregated with 203.99.210.0/24 (3257 6453 4755 17903) 203.99.212.0/24 3257 6453 4755 17903 203.99.213.0/24 6939 9498 17903 203.99.214.0/23 6939 9498 17903 203.99.214.0/23 57866 6453 4755 17903 + Announce - aggregate of 203.99.214.0/24 (57866 6453 4755 17903) and 203.99.215.0/24 (57866 6453 4755 17903) 203.99.214.0/24 57866 6453 4755 17903 - Withdrawn - aggregated with 203.99.215.0/24 (57866 6453 4755 17903) 203.99.215.0/24 57866 6453 4755 17903 - Withdrawn - aggregated with 203.99.214.0/24 (57866 6453 4755 17903) 203.99.216.0/23 6939 9498 17903 203.99.216.0/23 57866 6453 4755 17903 + Announce - aggregate of 203.99.216.0/24 (57866 6453 4755 17903) and 203.99.217.0/24 (57866 6453 4755 17903) 203.99.216.0/24 57866 6453 4755 17903 - Withdrawn - aggregated with 203.99.217.0/24 (57866 6453 4755 17903) 203.99.217.0/24 57866 6453 4755 17903 - Withdrawn - aggregated with 203.99.216.0/24 (57866 6453 4755 17903) 203.99.218.0/24 57866 6453 4755 17903 203.99.219.0/24 6939 9498 17903 203.99.221.0/24 57866 6453 4755 17903 203.132.208.0/23 6939 9498 9730 17903 203.132.208.0/23 3257 6453 4755 17903 + Announce - aggregate of 203.132.208.0/24 (3257 6453 4755 17903) and 203.132.209.0/24 (3257 6453 4755 17903) 203.132.208.0/24 3257 6453 4755 17903 - Withdrawn - aggregated with 203.132.209.0/24 (3257 6453 4755 17903) 203.132.209.0/24 3257 6453 4755 17903 - Withdrawn - aggregated with 203.132.208.0/24 (3257 6453 4755 17903) 203.132.214.0/24 2914 64049 55836 17903 208.177.44.0/24 6939 3356 17903
Advertisements that are fragments of the original RIR allocation (more specifics) originated by this AS.
AS17903 100 More Specifics 100 Total Advertisements COGNIZANT-IN-AP Cognizant Technology Solutions India Pvt Ltd, IN
8.5.252.0/24 8.0.0.0/13
8.5.253.0/24 8.0.0.0/13
8.33.202.0/24 8.32.0.0/11
8.47.80.0/24 8.32.0.0/11
27.118.32.0/24 27.118.32.0/19
27.118.34.0/24 27.118.32.0/19
27.118.35.0/24 27.118.32.0/19
27.118.36.0/22 27.118.32.0/19
27.118.36.0/24 27.118.32.0/19
27.118.37.0/24 27.118.32.0/19
27.118.38.0/24 27.118.32.0/19
27.118.39.0/24 27.118.32.0/19
27.118.40.0/22 27.118.32.0/19
27.118.40.0/24 27.118.32.0/19
27.118.41.0/24 27.118.32.0/19
27.118.42.0/24 27.118.32.0/19
27.118.43.0/24 27.118.32.0/19
50.206.255.0/24 50.128.0.0/9
116.66.130.0/24 116.66.128.0/19
116.66.136.0/24 116.66.128.0/19
116.66.137.0/24 116.66.128.0/19
116.66.138.0/23 116.66.128.0/19
116.66.138.0/24 116.66.128.0/19
116.66.139.0/24 116.66.128.0/19
116.66.140.0/23 116.66.128.0/19
116.66.140.0/24 116.66.128.0/19
116.66.141.0/24 116.66.128.0/19
116.66.144.0/23 116.66.128.0/19
116.66.144.0/24 116.66.128.0/19
116.66.145.0/24 116.66.128.0/19
116.66.146.0/23 116.66.128.0/19
116.66.146.0/24 116.66.128.0/19
116.66.147.0/24 116.66.128.0/19
116.66.148.0/22 116.66.128.0/19
116.66.148.0/24 116.66.128.0/19
116.66.149.0/24 116.66.128.0/19
116.66.150.0/23 116.66.128.0/19
116.66.150.0/24 116.66.128.0/19
116.66.151.0/24 116.66.128.0/19
116.66.152.0/22 116.66.128.0/19
116.66.152.0/24 116.66.128.0/19
116.66.153.0/24 116.66.128.0/19
116.66.154.0/23 116.66.128.0/19
116.66.154.0/24 116.66.128.0/19
116.66.155.0/24 116.66.128.0/19
116.66.156.0/24 116.66.128.0/19
116.66.157.0/24 116.66.128.0/19
116.66.158.0/23 116.66.128.0/19
116.66.158.0/24 116.66.128.0/19
116.66.159.0/24 116.66.128.0/19
174.70.203.0/24 174.64.0.0/12
203.99.192.0/21 203.99.192.0/19
203.99.192.0/22 203.99.192.0/19
203.99.192.0/23 203.99.192.0/19
203.99.192.0/24 203.99.192.0/19
203.99.193.0/24 203.99.192.0/19
203.99.194.0/23 203.99.192.0/19
203.99.194.0/24 203.99.192.0/19
203.99.195.0/24 203.99.192.0/19
203.99.196.0/22 203.99.192.0/19
203.99.196.0/23 203.99.192.0/19
203.99.196.0/24 203.99.192.0/19
203.99.197.0/24 203.99.192.0/19
203.99.198.0/23 203.99.192.0/19
203.99.198.0/24 203.99.192.0/19
203.99.199.0/24 203.99.192.0/19
203.99.200.0/23 203.99.192.0/19
203.99.200.0/24 203.99.192.0/19
203.99.201.0/24 203.99.192.0/19
203.99.202.0/24 203.99.192.0/19
203.99.203.0/24 203.99.192.0/19
203.99.204.0/22 203.99.192.0/19
203.99.204.0/23 203.99.192.0/19
203.99.204.0/24 203.99.192.0/19
203.99.205.0/24 203.99.192.0/19
203.99.206.0/24 203.99.192.0/19
203.99.207.0/24 203.99.192.0/19
203.99.208.0/23 203.99.192.0/19
203.99.208.0/24 203.99.192.0/19
203.99.209.0/24 203.99.192.0/19
203.99.210.0/23 203.99.192.0/19
203.99.210.0/24 203.99.192.0/19
203.99.211.0/24 203.99.192.0/19
203.99.212.0/24 203.99.192.0/19
203.99.213.0/24 203.99.192.0/19
203.99.214.0/23 203.99.192.0/19
203.99.214.0/24 203.99.192.0/19
203.99.215.0/24 203.99.192.0/19
203.99.216.0/23 203.99.192.0/19
203.99.216.0/24 203.99.192.0/19
203.99.217.0/24 203.99.192.0/19
203.99.218.0/24 203.99.192.0/19
203.99.219.0/24 203.99.192.0/19
203.99.221.0/24 203.99.192.0/19
203.132.208.0/23 203.132.208.0/20
203.132.208.0/24 203.132.208.0/20
203.132.209.0/24 203.132.208.0/20
203.132.214.0/24 203.132.208.0/20
207.243.5.0/24 207.242.0.0/15
208.177.44.0/24 208.176.0.0/15
27.118.56.0/24 27.118.32.0/19
Prefixes added and withdrawn by this origin AS in the past 7 days.
+ 50.206.255.0/24 Announced
+ 203.99.210.0/24 Announced
+ 203.99.211.0/24 Announced
- 27.118.56.0/24 Withdrawn
whois: 402603
IANA has recorded AS17903 as originally allocated by
/usr/bin/whois -h jwhois.apnic.netr "AS17903\n % [whois.apnic.net]
% Whois data copyright terms http://www.apnic.net/db/dbcopyright.html
% Information related to 'AS17653 - AS18431'
as-block: AS17653 - AS18431
descr: APNIC ASN block
remarks: These AS numbers are further assigned by APNIC
remarks: to APNIC members and end-users in the APNIC region
admin-c: HM20-AP
tech-c: HM20-AP
mnt-by: APNIC-HM
mnt-lower: APNIC-HM
last-modified: 2019-01-08T23:19:07Z
source: APNIC
role: APNIC Hostmaster
address: 6 Cordelia Street
address: South Brisbane
address: QLD 4101
country: AU
phone: +61 7 3858 3100
fax-no: +61 7 3858 3199
e-mail: helpdesk@apnic.net
admin-c: AMS11-AP
tech-c: AH256-AP
nic-hdl: HM20-AP
remarks: Administrator for APNIC
notify: hostmaster@apnic.net
mnt-by: MAINT-APNIC-AP
last-modified: 2013-10-23T04:06:51Z
source: APNIC
% Information related to 'AS17903'
% Abuse contact for 'AS17903' is 'abuse@cognizant.com'
aut-num: AS17903
as-name: COGNIZANT-IN-AP
descr: Cognizant Technology Solutions India Pvt Ltd,
country: IN
import: from AS4755 action pref=10; accept ANY
import: from AS9498 action pref=10; accept ANY
import: from AS3356 action pref =20; accept ANY
export: to AS4755 announce AS17903
export: to AS9498 announce AS17903
default: to AS9498 action pref=100; networks ANY
default: to AS4755 action pref=10; networks ANY
org: ORG-CTSI2-AP
admin-c: NA108-AP
tech-c: NA108-AP
abuse-c: AC1821-AP
notify: connect@chn.cognizant.com
mnt-lower: MAINT-IN-COGNIZANT
mnt-routes: MAINT-IN-COGNIZANT
mnt-by: APNIC-HM
mnt-irt: IRT-COGNIZANT-IN
last-modified: 2020-06-22T06:43:32Z
source: APNIC
irt: IRT-COGNIZANT-IN
address: Cognizant Technology Solutions
address: India.
e-mail: abuse@cognizant.com
abuse-mailbox: abuse@cognizant.com
admin-c: NA108-AP
tech-c: NA108-AP
auth: # Filtered
remarks: abuse@cognizant.com was validated on 2025-12-09
mnt-by: MAINT-IN-COGNIZANT
last-modified: 2025-12-09T15:28:36Z
source: APNIC
organisation: ORG-CTSI2-AP
org-name: Cognizant Technology Solutions India Pvt Ltd
org-type: LIR
country: IN
address: 5/535, Old Mahabalipuram Road
address: Okkiyam, Thoraipakkam
phone: +91-44-5209-6000
fax-no: +91-44-5209-6060
e-mail: connect@cognizant.com
mnt-ref: APNIC-HM
mnt-by: APNIC-HM
last-modified: 2023-09-05T02:14:59Z
source: APNIC
role: ABUSE COGNIZANTIN
country: ZZ
address: Cognizant Technology Solutions
address: India.
phone: +000000000
e-mail: abuse@cognizant.com
admin-c: NA108-AP
tech-c: NA108-AP
nic-hdl: AC1821-AP
remarks: Generated from irt object IRT-COGNIZANT-IN
remarks: abuse@cognizant.com was validated on 2025-12-09
abuse-mailbox: abuse@cognizant.com
mnt-by: APNIC-ABUSE
last-modified: 2025-12-09T15:29:02Z
source: APNIC
person: Network Administrator
nic-hdl: NA108-AP
e-mail: connect@cognizant.com
address: Cognizant Technology Solutions
address: India.
phone: +91-44-42096000
fax-no: +91-44-42096060
country: IN
mnt-by: MAINT-IN-COGNIZANT
last-modified: 2008-10-29T06:30:55Z
source: APNIC
% This query was served by the APNIC Whois Service version 1.88.48 (WHOIS-AU5)