subnet.im

AS49683MASSIVEGRID LTD

United KingdomRegistryRIPE NCC

As of 10th November 2026, AS49683 (MASSIVEGRID LTD), a network registered in the United Kingdom with RIPE NCC, originates 42 IPv4 prefixes covering 11.5k addresses and 1 IPv6 prefix. By IPv4 address space that makes it the 9,939th-largest of the 80,723 networks we see originating IPv4, and the 305th-largest of 2,122 in the United Kingdom. It is seen behind 4 upstream networks, most often AS174 (Cogent Communications, LLC) and AS12703 (Pulsant (Scotland) Ltd). 98% of its announcements have a valid RPKI ROA; 1 is RPKI-invalid. 98% of its routes reach at least 90% of full-feed peers, and 1 prefix is also originated by another network.

At a glance

IPv4 prefixes

42

IPv6 prefixes

1

IPv4 addresses

11.5k

IPv6 /64s

65.5k

Upstream graph

The networks AS49683 is seen behind, one and two hops out, drawn from real AS paths.

AS49683Toward the internet core
Upstream graph for AS49683: 11 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS49683MASSIVEGRID LTDThis networkAS174Cogent Communicat…AS3257GTT Communication…AS12703Pulsant (Scotland…AS54004Cablevision Light…AS1299Arelion (fka. Tel…AS151326DCConnect Communi…AS6667Elisa OyjAS398465Rackdog LLCAS6461Zayo BandwidthAS6128Cablevision Syste…AS6939Hurricane Electri…

Networks observed one and two hops upstream of AS49683 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

11

adjacent networks

Upstreams
436%
Peers
764%
Downstreams
00%

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

Upstreams of AS49683
NetworkCountryRelationshipPathsVantage pts
AS174Cogent Communications, LLCUSPeer1,58975
AS12703Pulsant (Scotland) LtdGBPeer975138
AS3257GTT Communications Inc.USPeer55659
AS54004Cablevision Lightpath LLCUSPeer3131

Prefixes

All 43

The largest blocks AS49683 originates, widest first.

Largest prefixes originated by AS49683
PrefixAddressesVisibility
89.33.68.0/221k1/76
31.25.235.0/2425676/76
31.25.236.0/2425675/76
31.25.237.0/2425676/76
31.25.238.0/2425675/76
31.25.239.0/2425675/76
171.22.172.0/2425675/76
171.22.173.0/2425675/76
171.22.174.0/2425675/76
171.22.175.0/2425676/76

Routing health

How AS49683'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

  • Valid97.7%42
  • Invalid2.3%1
  • No ROA0.0%0

Propagation

  • Globally propagated90% of full-feed peers or more97.7%42
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%2.3%1

Prefix sizes

IPv4 — 42 prefixes

IPv6 — 1 prefixes

  • /4865.5k × /64100.0%1

Recent changes

Announcements that started or stopped since 11th Oct 2026.

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