asn.dev

Autonomous system

AS17903 COGNIZANT-IN-AP Cognizant Technology Solutions India Pvt Ltd

Unclassified APNIC

IPv4 addresses 18.18K 24 prefixes
IPv6 prefixes 0 counted as prefixes, not addresses
Countries 1 mostly IN
Exchanges 0 recorded by PCH
Upstreams 13 0 downstream
Flagged prefixes 0 none

Summary

Cognizant

India · AI-generated

business it-services corporate

COGNIZANT-IN-AP is held by Cognizant Technology Solutions India Pvt Ltd.

What it's used for

  • The address space carries corporate IT infrastructure, evidenced by netnames consistently set to COGNIZANT across the majority of prefixes.
  • The AS announces 18176 IPv4 addresses across 24 prefixes while maintaining 13 observed neighbours, a ratio indicative of an internal corporate estate rather than a transit or access network.

Notable

  • Registrants align with the announcer for most blocks, listing Cognizant Technology Solutions India Pvt Ltd and IRT-COGNIZANT-IN, though one prefix (8.5.252.0/23) is registered to Level 3 Parent, LLC under netname LVLT-ORG-8-8.
  • The inventory is finely subdivided into 24 prefixes, including a mix of /20, /21, /22, /23, and /24 blocks, reflecting site-by-site segmentation typical of a large multinational enterprise.

This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy. Source, and how to suggest an edit.

Interconnection

Peering at a glance

Full topology · Graph

Internet exchanges

No exchange port on file. Many exchanges publish no participant list, so this is not proof of absence.

Transit providers

13 upstream, 0 downstream and 13 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS4755TATA Communications formerly VSNL is Leading ISP2,121
AS9498BHARTI Airtel Ltd.1,425
AS3356Level 3 Parent, LLC701
AS9299Philippine Long Distance Telephone Company319
AS8220COLT Technology Services Group Limited228
AS55836Reliance Jio Infocomm Limited211
AS9730Bharti Telesonic Ltd177
AS701Verizon Business134

All 13 upstreams →

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-16, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.

Address space

Summary

Shape and geography

IPv4 24 prefixes · 18.18K addresses IPv6 0 prefixes

CountryNamePrefixes
INIndia24

Registry

Allocation record

APNIC · via Atlas (registry + RDAP)
Registry
APNIC
Handle
AS17903
Registry name
COGNIZANT-IN-AP
Registrant
Cognizant Technology Solutions India Pvt Ltd
Abuse contact
abuse@cognizant.com
Registered
2008-09-04
Last changed
2020-06-22
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
2% valid · 2 valid, 95 with no ROA
ROAs
3 authorising AS17903
ASPA
no ASPA record
IRR
95% registered · 92 of 97 announcements
Route objects
45 naming AS17903

Reputation

Classification and threat

Unclassified Not in the curated lists. Most of the ~80,000 allocated ASNs are not.

Spamhaus DROP

Not on ASN-DROP The network as a whole is not listed.

No DROP prefixes None of its announced space is on the DROP prefix list.

Spamhaus DROP ("Don't Route Or Peer") lists space and networks run by, or hijacked for, spam and cybercrime operations: 442 networks and 1,783 prefixes, as published 2026-10-17. A short, high-confidence list, so a match is worth taking seriously, and absence from it says little on its own.

FBI IC3

No IC3 indicators Nothing from the FBI IC3 feed.

IC3 threat data is alpha. Absence of an indicator is not evidence of good behaviour, only of absence from this one feed.

Elsewhere

Cross-check