subnet.im

AS20940Akamai International B.V.

NetherlandsRegistryRIPE NCCTypeContent

As of 26th September 2026, AS20940 (Akamai International B.V.), a content network registered in the Netherlands with RIPE NCC, originates 3,954 IPv4 prefixes covering 15.6M addresses and 773 IPv6 prefixes. By IPv4 address space that makes it the 46th-largest of the 79,480 networks we see originating IPv4, and the largest of 1,023 in the Netherlands. It is seen behind 194 upstream networks, most often AS2914 (NTT America, Inc.) and AS1299 (Arelion (fka. Telia Carrier)), and in front of 14 downstream networks. Over 99% of its announcements have a valid RPKI ROA; 5 are RPKI-invalid. 96% 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

3,954

IPv6 prefixes

773

IPv4 addresses

15.6M

IPv6 /64s

1.1T

Upstream graph

The networks AS20940 is seen behind, one and two hops out, drawn from real AS paths.

AS20940Toward the internet core
Upstream graph for AS20940: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS20940Akamai Internatio…This networkAS174Cogent Communicat…AS1299Arelion (fka. Tel…AS2914NTT America, Inc.AS6453TATA Communicatio…AS6762Telecom Italia Sp…AS151326DCConnect Communi…AS8888xTom Pty LtdAS13030Init7 (Switzerlan…AS3130RGnet OUAS49544i3D.net B.VAS8220COLTAS35280F5 Networks SARL

Networks observed one and two hops upstream of AS20940 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

862

adjacent networks

Upstreams
19423%
Peers
65476%
Downstreams
142%

Networks carrying this one's traffic toward the rest of the internet. Listing the 40 seen on the most AS paths, of 194.

Upstreams of AS20940
NetworkCountryRelationshipPathsVantage pts
AS2914NTT America, Inc.USPeer94,985145
AS1299Arelion (fka. Telia Carrier)SEPeer86,002145
AS6453TATA Communications (America) IncUSPeer66,912145
AS174Cogent Communications, LLCUSPeer50,556139
AS6762Telecom Italia Sparkle (Seabone)ITPeer40,740109
AS3356Lumen (Level 3)USPeer36,424144
AS3257GTT Communications Inc.USPeer34,179144
AS3491PCCW Global (HK) Ltd.HKPeer33,11479
AS6461Zayo BandwidthUSPeer22,633114
AS6939Hurricane Electric LLCUSPeer19,48337

Prefixes

All 4,727

The largest blocks AS20940 originates, widest first.

Largest prefixes originated by AS20940
PrefixAddressesVisibility
104.64.0.0/104.2M80/81
23.32.0.0/112.1M80/81
23.192.0.0/112.1M80/81
23.0.0.0/121M80/81
172.224.0.0/121M80/81
2.16.0.0/13524k80/81
23.72.0.0/13524k80/81
172.232.0.0/13524k80/81
184.24.0.0/13524k80/81
23.64.0.0/14262k81/81

Routing health

How AS20940'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

  • Valid99.5%4,702
  • Invalid0.1%5
  • No ROA0.4%20

Propagation

  • Globally propagated90% of full-feed peers or more96.3%4,551
  • Partially propagated40% to 90%2.8%132
  • Seen by few peersUnder 40%0.9%44

Prefix sizes

IPv4 — 3,954 prefixes

IPv6 — 773 prefixes

  • /241.1T × /640.1%1
  • /324.3B × /640.4%3
  • /4016.8M × /640.1%1
  • /4865.5k × /6497.3%752
  • /49 and longerAggregated2.1%16

Recent changes

Announcements that started or stopped since 27th Aug 2026.

77 announced and 59 withdrawn in all; the most recent are shown.

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