AS6453TATA Communications (America) Inc
United StatesRegistryARINTypeT1As of 26th September 2026, AS6453 (TATA Communications (America) Inc), a tier-1 transit network registered in the United States with ARIN, originates 126 IPv4 prefixes covering 561k addresses and 18 IPv6 prefixes. By IPv4 address space that makes it the 662nd-largest of the 79,480 networks we see originating IPv4, and the 158th-largest of 18,421 in the United States. It is seen behind 63 upstream networks, most often AS8220 (COLT) and AS35280 (F5 Networks SARL), and in front of 655 downstream networks. 76% of its announcements have a valid RPKI ROA; 8 are RPKI-invalid. 92% of its routes reach at least 90% of full-feed peers, and 2 prefixes are also originated by another network.
At a glance
IPv4 prefixes
IPv6 prefixes
IPv4 addresses
IPv6 /64s
Upstream graph
The networks AS6453 is seen behind, one and two hops out, drawn from real AS paths.
Networks observed one and two hops upstream of AS6453 in real AS paths. A thicker line means more vantage points saw that adjacency, so weight tracks how well attested it is — not how much traffic it carries. Adjacency is an observation; whether it is a transit purchase or a settlement-free peering is an inference, and is labelled as one wherever we show it.
Neighbouring networks
1,378
adjacent networks
- Upstreams
- 635%
- Peers
- 66048%
- Downstreams
- 65548%
Networks carrying this one's traffic toward the rest of the internet. Listing the 40 seen on the most AS paths, of 63.
| Network | Country | Relationship | Paths | Vantage pts |
|---|---|---|---|---|
| AS8220COLT |  GB | Peer | 964,627 | 6 |
| AS35280F5 Networks SARL |  FR | Peer | 666,707 | 6 |
| AS32590Valve Corporation | US | Peer | 651,427 | 6 |
| AS17660DrukNet ISP |  BT | Peer | 617,369 | 2 |
| AS4775Globe Telecoms |  PH | Peer | 587,819 | 2 |
| AS34984Superonline Iletisim Hizmetleri A.S. |  TR | Peer | 437,382 | 3 |
| AS2914NTT America, Inc. | US | Peer | 340,961 | 61 |
| AS1299Arelion (fka. Telia Carrier) |  SE | Peer | 338,712 | 60 |
| AS2497Internet Initiative Japan Inc. |  JP | Peer | 239,567 | 6 |
| AS9002RETN Limited | GB | Peer | 231,492 | 29 |
Prefixes
All 144The largest blocks AS6453 originates, widest first.
| Prefix | Addresses | Visibility |
|---|---|---|
| 64.86.0.0/16 | 65.5k | 81/81 |
| 80.231.0.0/16 | 65.5k | 81/81 |
| 195.219.0.0/16 | 65.5k | 80/81 |
| 63.243.128.0/17 | 32.8k | 81/81 |
| 66.110.0.0/17 | 32.8k | 81/81 |
| 180.87.0.0/17 | 32.8k | 81/81 |
| 209.58.0.0/17 | 32.8k | 81/81 |
| 216.6.0.0/17 | 32.8k | 81/81 |
| 66.110.0.0/18 | 16.4k | 81/81 |
| 66.198.128.0/18 | 16.4k | 81/81 |
Routing health
How AS6453's own announcements validate against RPKI and how far they propagate. The same measures for the whole routing table are on the routing table in numbers.
RPKI origin validation
- Valid75.7%109
- Invalid5.6%8
- No ROA18.8%27
Propagation
- Globally propagated90% of full-feed peers or more92.4%133
- Partially propagated40% to 90%0.7%1
- Seen by few peersUnder 40%6.9%10
Prefix sizes
IPv4 — 126 prefixes
IPv6 — 18 prefixes
- /2934.4B × /645.6%1
- /318.6B × /645.6%1
- /324.3B × /6427.8%5
- /36268M × /645.6%1
- /3867.1M × /6422.2%4
- /4016.8M × /645.6%1
- /4865.5k × /6427.8%5
Recent changes
Announcements that started or stopped since 27th Aug 2026.
- Announced103.48.2.0/2426th Sept 2026
- Announced163.52.47.0/2426th Sept 2026
- Withdrawn109.161.208.0/2425th Sept 2026
- Announced109.161.208.0/2425th Sept 2026
- Withdrawn84.255.184.0/2425th Sept 2026
- Announced84.255.184.0/2425th Sept 2026
- Withdrawn109.161.214.0/2425th Sept 2026
- Announced109.161.214.0/2425th Sept 2026
- Withdrawn203.199.243.0/2425th Sept 2026
- Announced203.199.243.0/2425th Sept 2026
- Withdrawn203.199.243.0/2424th Sept 2026
- Withdrawn109.161.230.0/2422nd Sept 2026
8 announced and 8 withdrawn in all; the most recent are shown.
Routing data derived from RouteViews MRT archives, BGPKIT relationship inference and public registry data.