subnet.im

AS17813Mahanagar Telephone Nigam Limited

IndiaRegistryAPNICTypeEyeball

As of 12th November 2026, AS17813 (Mahanagar Telephone Nigam Limited), an access network registered in India with APNIC, originates 66 IPv4 prefixes covering 1.3M addresses and 3 IPv6 prefixes. By IPv4 address space that makes it the 393rd-largest of the 80,772 networks we see originating IPv4, and the 7th-largest of 2,965 in India. It is seen behind 1 upstream network, most often AS9829 (BSNL (Bharat Sanchar Nigam Ltd)), and in front of 2 downstream networks. 86% of its announcements have a valid RPKI ROA; 1 is RPKI-invalid. 99% of its routes reach at least 90% of full-feed peers.

At a glance

IPv4 prefixes

66

IPv6 prefixes

3

IPv4 addresses

1.3M

IPv6 /64s

4.3B

Upstream graph

The networks AS17813 is seen behind, one and two hops out, drawn from real AS paths.

AS17813Toward the internet core
Upstream graph for AS17813: 3 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS17813Mahanagar Telepho…This networkAS9829BSNL (Bharat Sanc…AS4755TATA Communicatio…AS9498Bharti Airtel Ltd.

Networks observed one and two hops upstream of AS17813 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

7

adjacent networks

Upstreams
114%
Peers
457%
Downstreams
229%

Networks carrying this one's traffic toward the rest of the internet.

Upstreams of AS17813
NetworkCountryRelationshipPathsVantage pts
AS9829BSNL (Bharat Sanchar Nigam Ltd)INPeer5,317142

Prefixes

All 69

The largest blocks AS17813 originates, widest first.

Largest prefixes originated by AS17813
PrefixAddressesVisibility
182.56.0.0/14262k77/78
59.181.0.0/1665.5k77/78
59.185.0.0/1665.5k77/78
120.57.0.0/1665.5k78/78
120.63.0.0/1665.5k77/78
182.56.0.0/1665.5k77/78
182.57.0.0/1665.5k77/78
182.58.0.0/1665.5k77/78
182.59.0.0/1665.5k77/78
59.176.128.0/1732.8k78/78

Routing health

How AS17813'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

  • Valid85.5%59
  • Invalid1.4%1
  • No ROA13.0%9

Propagation

  • Globally propagated90% of full-feed peers or more98.6%68
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%1.4%1

Prefix sizes

IPv4 — 66 prefixes

IPv6 — 3 prefixes

  • /332.1B × /6466.7%2
  • /4865.5k × /6433.3%1

Recent changes

Announcements that started or stopped since 13th Oct 2026.

  • Announced120.63.0.0/1727th Oct 2026
  • Withdrawn120.63.0.0/1726th Oct 2026

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