AS10199 — TATA-AS - Tata Communications Ltd

AS10199 announces 62 IPv4 prefixes covering 150,272 addresses and 0 IPv6 prefixes.

About this network

TATA-AS is held by Tata Communications Ltd — the company that grew out of VSNL, India's former international-gateway monopoly. Despite the famous name, this particular ASN is not the global backbone; it carries Indian end-user access space.

What it's used for

• Subscriber and customer connectivity inside India. The reverse DNS is unambiguous about what lives here: pools like mum-cdma.dialup.vsnl.net.in, cdma-delhi.vsnl.net.in and del-cdma.dialup.vsnl.net.in, alongside static customer assignments named static-pune, static-delhi, static-kolkata and static-ttsl-hyderabad (TTSL being Tata Teleservices).

Notable

This is an eyeball access network, not a carrier, and two things settle it. First the naming: dialup and cdma pools are dynamic subscriber address space, and the static-<city> blocks are fixed assignments to broadband and small business customers — both are customer-facing, not backbone. Second the topology: RIS sees 47 announced IPv4 prefixes totalling 180,480 addresses, no IPv6, and only 1 observed neighbour. A wholesale carrier peers with hundreds to thousands of ASes; a single observed neighbour means this AS sits behind Tata's transit, as an access network hanging off the group's backbone rather than being it.

Note that cdma here names the access technology, not the customer type — it was Tata's wireless-broadband last mile (the Indicom/Photon EVDO dongles and fixed wireless terminals), which served ordinary homes and small offices.

Interesting

Addresses in this AS geolocate to specific Indian metros, and the PTRs say which: Mumbai, Delhi, Pune, Hyderabad and Kolkata all appear by name in the hostnames.

This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy.

Announced prefixes

• 14.141.140.0/24
• 59.161.0.0/18
• 59.161.80.0/21
• 59.161.88.0/22
• 59.161.96.0/21
• 59.161.120.0/21
• 59.161.161.0/24
• 59.161.162.0/23
• 59.161.168.0/21
• 59.161.176.0/20
• 59.161.192.0/18
• 115.117.0.0/23
• 115.117.2.0/24
• 115.117.4.0/22
• 115.117.8.0/21
• 115.117.16.0/20
• 115.117.32.0/22
• 115.117.36.0/23
• 115.117.39.0/24
• 115.117.40.0/21
• 115.117.48.0/21
• 115.117.56.0/22
• 115.117.60.0/23
• 115.117.64.0/22
• 115.117.68.0/24
• 115.117.72.0/21
• 115.117.80.0/21
• 115.117.88.0/23
• 115.117.91.0/24
• 115.117.92.0/22
• 115.117.96.0/23
• 115.117.112.0/23
• 115.117.128.0/19
• 115.117.160.0/20
• 115.117.176.0/22
• 115.117.192.0/19
• 115.117.225.0/24
• 115.117.226.0/23
• 115.117.228.0/22
• 115.117.232.0/21
• 115.117.240.0/20
• 115.118.10.0/23
• 115.118.39.0/24
• 115.118.67.0/24
• 115.118.79.0/24
• 115.118.101.0/24
• 115.118.102.0/23
• 115.118.112.0/20
• 115.118.140.0/22
• 115.118.172.0/22
• 115.118.200.0/21
• 115.118.240.0/20
• 121.244.10.0/23
• 121.244.12.0/22
• 121.244.16.0/22
• 121.244.20.0/23
• 121.245.32.0/20
• 121.245.64.0/19
• 121.245.96.0/20
• 121.245.144.0/20
• 121.245.160.0/19
• 219.64.160.0/20

Upstream networks

• AS4755 TATA Communications formerly VSNL is Leading ISP

Adjacent networks

• AS4755 TATA Communications formerly VSNL is Leading ISP

Routing security

• RPKI: 25 valid, 3 invalid and 21 not-found announcements; 40 ROAs.
• ASPA: none published.
• IRR: 53% of announcements registered; 107 route objects.
• Listed in as-sets: AS-VSNL, AS-VSNL-IN, AS7473:AS-CUSTOMERS:AS10199, AS9583:AS-SIFY, AS9583:AS-SIFY.