17903 COGNIZANT-IN-AP Cognizant Technology Solutions India Pvt Ltd,
Adjacency: 3 Upstream: 3 Downstream: 0
Upstream Adjacent AS list
AS18101 RIL-IDC Reliance Infocom Ltd Internet Data Centre,
AS4755 VSNL-AS Videsh Sanchar Nigam Ltd. Autonomous System
AS9498 BBIL-AP BHARTI BT INTERNET LTD.
Rank AS Type Originate Addr Space (pfx) Transit Addr space (pfx) Description 6304 AS17903 ORIGIN Originate: 9728 /18.75 Transit: 0 /0.00 COGNIZANT-IN-AP Cognizant Technology Solutions India Pvt Ltd,
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 % 1414 AS17903 COGNIZANT-IN-AP Cognizant Technology Sol 29 12 3 20 9 31.03% Prefix AS Path Aggregation Suggestion 203.99.192.0/22 4637 7473 9498 17903 203.99.192.0/24 4637 6453 4755 17903 203.99.193.0/24 4637 7473 9498 17903 - Withdrawn - matching aggregate 203.99.192.0/22 4637 7473 9498 17903 203.99.194.0/24 4637 6453 4755 17903 203.99.195.0/24 4637 7473 9498 17903 - Withdrawn - matching aggregate 203.99.192.0/22 4637 7473 9498 17903 203.99.196.0/24 4637 6453 4755 17903 203.99.197.0/24 4637 7473 9498 17903 203.99.198.0/23 4637 7473 9498 17903 203.99.198.0/24 4637 6453 4755 17903 203.99.199.0/24 4637 7473 9498 17903 - Withdrawn - matching aggregate 203.99.198.0/23 4637 7473 9498 17903 203.99.204.0/22 4637 7473 9498 17903 203.99.206.0/23 4637 6453 4755 17903 + Announce - aggregate of 203.99.206.0/24 (4637 6453 4755 17903) and 203.99.207.0/24 (4637 6453 4755 17903) 203.99.206.0/24 4637 6453 4755 17903 - Withdrawn - aggregated with 203.99.207.0/24 (4637 6453 4755 17903) 203.99.207.0/24 4637 6453 4755 17903 - Withdrawn - aggregated with 203.99.206.0/24 (4637 6453 4755 17903) 203.99.208.0/23 4637 7473 9498 17903 203.99.208.0/24 4637 7473 9498 17903 - Withdrawn - matching aggregate 203.99.208.0/23 4637 7473 9498 17903 203.99.209.0/24 4637 6453 4755 17903 203.99.210.0/23 4637 6453 4755 17903 + Announce - aggregate of 203.99.210.0/24 (4637 6453 4755 17903) and 203.99.211.0/24 (4637 6453 4755 17903) 203.99.210.0/24 4637 6453 4755 17903 - Withdrawn - aggregated with 203.99.211.0/24 (4637 6453 4755 17903) 203.99.211.0/24 4637 6453 4755 17903 - Withdrawn - aggregated with 203.99.210.0/24 (4637 6453 4755 17903) 203.99.212.0/22 4637 7473 9498 17903 + Announce - aggregate of 203.99.212.0/23 (4637 7473 9498 17903) and 203.99.214.0/23 (4637 7473 9498 17903) 203.99.212.0/24 4637 7473 9498 17903 - Withdrawn - aggregated with 203.99.213.0/24 (4637 7473 9498 17903) 203.99.213.0/24 4637 7473 9498 17903 - Withdrawn - aggregated with 203.99.212.0/24 (4637 7473 9498 17903) 203.99.214.0/24 4637 7473 9498 17903 - Withdrawn - aggregated with 203.99.215.0/24 (4637 7473 9498 17903) 203.99.215.0/24 4637 7473 9498 17903 - Withdrawn - aggregated with 203.99.214.0/24 (4637 7473 9498 17903) 203.99.216.0/24 4637 7473 9498 17903 203.99.218.0/24 4637 6453 4755 17903 203.99.219.0/24 4637 7473 9498 17903 203.99.221.0/24 4637 7473 9498 17903 203.132.208.0/23 4637 15412 18101 17903 17903 17903 17903 17903 17903 203.132.208.0/24 4637 6453 4755 17903 203.132.209.0/24 4637 15412 18101 17903
Advertisements that are fragments of the original RIR allocation (more specifics) originated by this AS.
AS17903 31 More Specifics 31 Total Advertisements COGNIZANT-IN-AP Cognizant Technology Solutions India Pvt Ltd,
203.99.192.0/22 203.99.192.0/19
203.99.192.0/24 203.99.192.0/19
203.99.193.0/24 203.99.192.0/19
203.99.194.0/24 203.99.192.0/19
203.99.195.0/24 203.99.192.0/19
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
203.99.204.0/22 203.99.192.0/19
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
203.99.210.0/24 203.99.192.0/19
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
203.99.214.0/24 203.99.192.0/19
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
Prefixes added and withdrawn by this origin AS in the past 7 days.
+ 203.132.208.0/23 Announced
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
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