subnet.im

AS2571DHL Information Services (Europe) s.r.o

CzechiaRegistryARIN

As of 11th November 2026, AS2571 (DHL Information Services (Europe) s.r.o), a network registered in Czechia with ARIN, originates 55 IPv4 prefixes covering 439k addresses and 47 IPv6 prefixes. By IPv4 address space that makes it the 785th-largest of the 80,747 networks we see originating IPv4, and the 6th-largest of 576 in Czechia. It is seen behind 9 upstream networks, most often AS55002 (F5, Inc.) and AS16019 (Vodafone Czech Republic a.s.). 13% of its announcements have a valid RPKI ROA; 1 is RPKI-invalid. 97% of its routes reach at least 90% of full-feed peers.

At a glance

IPv4 prefixes

55

IPv6 prefixes

47

IPv4 addresses

439k

IPv6 /64s

6M

Upstream graph

The networks AS2571 is seen behind, one and two hops out, drawn from real AS paths.

AS2571Toward the internet core
Upstream graph for AS2571: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS2571DHL Information S…This networkAS3356Lumen (Level 3)AS4788TM Technology Ser…AS16019Vodafone Czech Re…AS32787Akamai (Prolexic)AS55002F5, Inc.AS3549Lumen (fka. Globa…AS2914NTT America, Inc.AS6939Hurricane Electri…AS1273Vodafone Group PLCAS6453TATA Communicatio…AS11404Astound (fka. Wav…AS35280F5 Networks SARL

Networks observed one and two hops upstream of AS2571 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

18

adjacent networks

Upstreams
950%
Peers
950%
Downstreams
00%

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

Upstreams of AS2571
NetworkCountryRelationshipPathsVantage pts
AS55002F5, Inc.USPeer4,670138
AS16019Vodafone Czech Republic a.s.CZPeer1,114137
AS3356Lumen (Level 3)USPeer366138
AS32787Akamai (Prolexic)USPeer30476
AS4788TM Technology Services Sdn. Bhd.MYPeer216138
AS10204Arcnet NTT MSC ISPMYPeer15276
AS6855Slovak Telekom, a.s.SKPeer5141
AS5610O2 Czech Republic, a.s.CZPeer55
AS3257GTT Communications Inc.USPeer33

Prefixes

All 102

The largest blocks AS2571 originates, widest first.

Largest prefixes originated by AS2571
PrefixAddressesVisibility
165.72.0.0/1665.5k76/76
199.40.0.0/1665.5k76/76
165.72.0.0/1732.8k76/76
165.72.128.0/1732.8k76/76
199.40.0.0/1732.8k1/76
199.40.128.0/1732.8k1/76
165.72.0.0/1816.4k76/76
165.72.64.0/1816.4k76/76
165.72.128.0/1816.4k76/76
165.72.192.0/1816.4k76/76

Routing health

How AS2571'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

  • Valid12.7%13
  • Invalid1.0%1
  • No ROA86.3%88

Propagation

  • Globally propagated90% of full-feed peers or more97.1%99
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%2.9%3

Prefix sizes

IPv4 — 55 prefixes

IPv6 — 47 prefixes

  • /441M × /646.4%3
  • /4865.5k × /6491.5%43
  • /49 and longerAggregated2.1%1

Recent changes

Announcements that started or stopped since 12th Oct 2026.

  • Announced165.72.0.0/1720th Oct 2026
  • Announced165.72.128.0/1720th Oct 2026
  • Withdrawn165.72.0.0/1719th Oct 2026
  • Withdrawn165.72.128.0/1719th Oct 2026

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