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AS4213Krypt Technologies

United StatesRegistryARIN

As of 10th November 2026, AS4213 (Krypt Technologies), a network registered in the United States with ARIN, originates 111 IPv4 prefixes covering 80.1k addresses and 18 IPv6 prefixes. By IPv4 address space that makes it the 2,828th-largest of the 80,733 networks we see originating IPv4, and the 911th-largest of 18,751 in the United States. It is seen behind 19 upstream networks, most often AS1299 (Arelion (fka. Telia Carrier)) and AS3257 (GTT Communications Inc.), and in front of 33 downstream networks. 91% of its announcements have a valid RPKI ROA; 1 is RPKI-invalid. 91% 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

111

IPv6 prefixes

18

IPv4 addresses

80.1k

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…AS13030Init7 (Switzerlan…AS16552Tiggee LLCAS6667Elisa OyjAS398465Rackdog LLCAS20130Depaul UniversityAS132337Axclusive

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

146

adjacent networks

Upstreams
1913%
Peers
9464%
Downstreams
3323%

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

Upstreams of AS4213
NetworkCountryRelationshipPathsVantage pts
AS1299Arelion (fka. Telia Carrier)SEPeer11,778111
AS3257GTT Communications Inc.USPeer8,481118
AS174Cogent Communications, LLCUSPeer5,942132
AS6939Hurricane Electric LLCUSPeer1,89919
AS6461Zayo BandwidthUSPeer62681
AS14537Continent 8 LLCUSPeer3534
AS49544i3D.net B.VNLPeer2982
AS24482SG.GSSGPeer2642
AS58511Swoop (Anycast Global Backbone)AUPeer2502
AS24516Virtutel Pty LtdAUPeer2022

Prefixes

All 129

The largest blocks AS4213 originates, widest first.

Largest prefixes originated by AS4213
PrefixAddressesVisibility
66.172.0.0/1816.4k76/76
209.151.224.0/198.2k76/76
66.180.192.0/204.1k76/76
66.211.96.0/204.1k75/76
76.8.16.0/204.1k75/76
216.176.192.0/204.1k75/76
66.186.32.0/212k75/76
209.131.72.0/212k75/76
64.113.24.0/221k1/76
69.194.0.0/221k75/76

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

  • Valid91.5%118
  • Invalid0.8%1
  • No ROA7.8%10

Propagation

  • Globally propagated90% of full-feed peers or more91.5%118
  • Partially propagated40% to 90%0.8%1
  • Seen by few peersUnder 40%7.8%10

Prefix sizes

IPv4 — 111 prefixes

IPv6 — 18 prefixes

  • /324.3B × /6411.1%2
  • /35537M × /6422.2%4
  • /4016.8M × /6444.4%8
  • /4865.5k × /6422.2%4

Recent changes

Announcements that started or stopped since 12th Oct 2026.

13 announced and 9 withdrawn in all; the most recent are shown.

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