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AS59711HZ Hosting Ltd

BulgariaRegistryRIPE NCC

As of 27th September 2026, AS59711 (HZ Hosting Ltd), a network registered in Bulgaria with RIPE NCC, originates 159 IPv4 prefixes covering 53.5k addresses and 17 IPv6 prefixes. By IPv4 address space that makes it the 4,306th-largest of the 79,525 networks we see originating IPv4, and the 14th-largest of 669 in Bulgaria. It is seen behind 36 upstream networks, most often AS174 (Cogent Communications, LLC) and AS3356 (Lumen (Level 3)), and in front of 3 downstream networks. Every one of its announcements has a valid RPKI ROA, and none are RPKI-invalid. 100% of its routes reach at least 90% of full-feed peers.

At a glance

IPv4 prefixes

159

IPv6 prefixes

17

IPv4 addresses

53.5k

IPv6 /64s

1.1M

Upstream graph

The networks AS59711 is seen behind, one and two hops out, drawn from real AS paths.

AS59711Toward the internet core
Upstream graph for AS59711: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS59711HZ Hosting LtdThis networkAS174Cogent Communicat…AS2914NTT America, Inc.AS3356Lumen (Level 3)AS6681GIVEME CLOUD SP Z…AS42708Glesys ABAS151326DCConnect Communi…AS3130RGnet OUAS49544i3D.net B.VAS1299Arelion (fka. Tel…AS3549Lumen (fka. Globa…AS9002RETN LimitedAS35320Eurotranstelecom …

Networks observed one and two hops upstream of AS59711 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

200

adjacent networks

Upstreams
3618%
Peers
16181%
Downstreams
32%

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

Upstreams of AS59711
NetworkCountryRelationshipPathsVantage pts
AS174Cogent Communications, LLCUSPeer3,998100
AS3356Lumen (Level 3)USPeer3,58687
AS2914NTT America, Inc.USPeer1,58894
AS6681GIVEME CLOUD SP Z O OPLPeer97349
AS42708Glesys ABSEPeer853143
AS9002RETN LimitedGBPeer79499
AS6939Hurricane Electric LLCUSPeer46818
AS6762Telecom Italia Sparkle (Seabone)ITPeer45212
AS208566GIVEME CLOUD SP Z O OPLPeer26438
AS25091IP-Max SACHPeer2475

Prefixes

All 176

The largest blocks AS59711 originates, widest first.

Largest prefixes originated by AS59711
PrefixAddressesVisibility
205.188.80.0/221k81/81
205.188.224.0/221k81/81
212.180.16.0/221k80/81
212.180.32.0/221k80/81
212.180.60.0/221k80/81
213.232.116.0/221k81/81
5.149.248.0/2351281/81
5.149.254.0/2351281/81
62.192.96.0/2351281/81
66.167.70.0/2351281/81

Routing health

How AS59711'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

  • Valid100.0%176
  • Invalid0.0%0
  • No ROA0.0%0

Propagation

  • Globally propagated90% of full-feed peers or more100.0%176
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 159 prefixes

IPv6 — 17 prefixes

  • /4865.5k × /64100.0%17

Recent changes

Announcements that started or stopped since 28th Aug 2026.

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