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AS9583Sify Limited

IndiaRegistryAPNICTypeContent

As of 27th September 2026, AS9583 (Sify Limited), a content network registered in India with APNIC, originates 2,193 IPv4 prefixes covering 1.1M addresses and 36 IPv6 prefixes. By IPv4 address space that makes it the 445th-largest of the 79,523 networks we see originating IPv4, and the 10th-largest of 2,922 in India. It is seen behind 61 upstream networks, most often AS55836 (Reliance Jio Infocomm Limited) and AS6453 (TATA Communications (America) Inc), and in front of 225 downstream networks. 92% of its announcements have a valid RPKI ROA; 7 are RPKI-invalid. 94% 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

2,193

IPv6 prefixes

36

IPv4 addresses

1.1M

IPv6 /64s

4.3B

Upstream graph

The networks AS9583 is seen behind, one and two hops out, drawn from real AS paths.

AS9583Toward the internet core
Upstream graph for AS9583: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS9583Sify LimitedThis networkAS1299Arelion (fka. Tel…AS4755TATA Communicatio…AS6453TATA Communicatio…AS7473Singapore Telecom…AS55836Reliance Jio Info…AS13030Init7 (Switzerlan…AS35280F5 Networks SARLAS8220COLTAS32590Valve CorporationAS6461Zayo BandwidthAS6939Hurricane Electri…AS64049Reliance Jio Info…

Networks observed one and two hops upstream of AS9583 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

1,198

adjacent networks

Upstreams
615%
Peers
91276%
Downstreams
22519%

Networks carrying this one's traffic toward the rest of the internet. Listing the 40 seen on the most AS paths, of 61.

Upstreams of AS9583
NetworkCountryRelationshipPathsVantage pts
AS55836Reliance Jio Infocomm LimitedINPeer97,060130
AS6453TATA Communications (America) IncUSPeer39,17396
AS4755TATA Communications (formerly VSNL)INPeer34,727145
AS7473Singapore Telecommunications LtdSGPeer30,212115
AS1299Arelion (fka. Telia Carrier)SEPeer28,684139
AS2914NTT America, Inc.USPeer21,100119
AS3320Deutsche Telekom AGDEPeer19,04071
AS6939Hurricane Electric LLCUSPeer5,78329
AS7713PT Telkom Indonesia TbkIDPeer4,4804
AS38880Micron21 Datacentre Pty LtdAUPeer3,8422

Prefixes

All 2,229

The largest blocks AS9583 originates, widest first.

Largest prefixes originated by AS9583
PrefixAddressesVisibility
223.30.0.0/15131k80/81
118.94.0.0/204.1k81/81
118.94.16.0/204.1k81/81
118.94.32.0/204.1k81/81
118.94.48.0/204.1k81/81
118.94.64.0/204.1k81/81
118.94.80.0/204.1k81/81
118.94.96.0/204.1k81/81
118.94.112.0/204.1k81/81
118.94.128.0/204.1k81/81

Routing health

How AS9583'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

  • Valid92.0%2,050
  • Invalid0.3%7
  • No ROA7.7%172

Propagation

  • Globally propagated90% of full-feed peers or more94.2%2,099
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%5.8%130

Prefix sizes

IPv4 — 2,193 prefixes

IPv6 — 36 prefixes

  • /324.3B × /642.8%1
  • /4865.5k × /6491.7%33
  • /49 and longerAggregated5.6%2

Recent changes

Announcements that started or stopped since 28th Aug 2026.

Routing data derived from RouteViews MRT archives, BGPKIT relationship inference and public registry data.