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AS4213Krypt Technologies

United StatesRegistryARIN

As of 26th September 2026, AS4213 (Krypt Technologies), a network registered in the United States with ARIN, originates 105 IPv4 prefixes covering 77.1k addresses and 17 IPv6 prefixes. By IPv4 address space that makes it the 2,849th-largest of the 79,516 networks we see originating IPv4, and the 914th-largest of 18,424 in the United States. It is seen behind 20 upstream networks, most often AS1299 (Arelion (fka. Telia Carrier)) and AS3257 (GTT Communications Inc.), and in front of 36 downstream networks. 97% of its announcements have a valid RPKI ROA, and none are RPKI-invalid. Over 99% 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

105

IPv6 prefixes

17

IPv4 addresses

77.1k

IPv6 /64s

10.9B

Upstream graph

The networks AS4213 is seen behind, one and two hops out, drawn from real AS paths.

AS4213Toward the internet core
Upstream graph for AS4213: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS4213Krypt TechnologiesThis networkAS174Cogent Communicat…AS1299Arelion (fka. Tel…AS3257GTT Communication…AS6461Zayo BandwidthAS6939Hurricane Electri…AS151326DCConnect Communi…AS8888xTom Pty LtdAS13030Init7 (Switzerlan…AS6667Elisa OyjAS398465Rackdog LLCAS18106Viewqwest Pte LtdAS20130Depaul University

Networks observed one and two hops upstream of AS4213 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

152

adjacent networks

Upstreams
2013%
Peers
9663%
Downstreams
3624%

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

Upstreams of AS4213
NetworkCountryRelationshipPathsVantage pts
AS1299Arelion (fka. Telia Carrier)SEPeer12,134130
AS3257GTT Communications Inc.USPeer10,344126
AS174Cogent Communications, LLCUSPeer7,707139
AS6939Hurricane Electric LLCUSPeer2,32824
AS6461Zayo BandwidthUSPeer63783
AS38880Micron21 Datacentre Pty LtdAUPeer3762
AS14537Continent 8 LLCUSPeer3384
AS49544i3D.net B.VNLPeer2992
AS24482SG.GSSGPeer2602
AS58511Swoop (Anycast Global Backbone)AUPeer2482

Prefixes

All 122

The largest blocks AS4213 originates, widest first.

Largest prefixes originated by AS4213
PrefixAddressesVisibility
66.172.0.0/1816.4k81/81
209.151.224.0/198.2k81/81
66.180.192.0/204.1k81/81
66.211.96.0/204.1k80/81
76.8.16.0/204.1k80/81
216.176.192.0/204.1k80/81
66.186.32.0/212k80/81
209.131.72.0/212k80/81
64.113.24.0/221k1/81
209.131.72.0/221k80/81

Routing health

How AS4213'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

  • Valid96.7%118
  • Invalid0.0%0
  • No ROA3.3%4

Propagation

  • Globally propagated90% of full-feed peers or more99.2%121
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.8%1

Prefix sizes

IPv4 — 105 prefixes

IPv6 — 17 prefixes

  • /324.3B × /6411.8%2
  • /35537M × /6423.5%4
  • /4016.8M × /6447.1%8
  • /4865.5k × /6417.6%3

Recent changes

Announcements that started or stopped since 27th Aug 2026.

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