subnet.im

AS44066firstcolo GmbH

GermanyRegistryRIPE NCCTypeEyeball

As of 26th September 2026, AS44066 (firstcolo GmbH), an access network registered in Germany with RIPE NCC, originates 54 IPv4 prefixes covering 165k addresses and 16 IPv6 prefixes. By IPv4 address space that makes it the 1,552nd-largest of the 79,516 networks we see originating IPv4, and the 38th-largest of 2,288 in Germany. It is seen behind 38 upstream networks, most often AS1299 (Arelion (fka. Telia Carrier)) and AS2914 (NTT America, Inc.), and in front of 22 downstream networks. 74% of its announcements have 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

54

IPv6 prefixes

16

IPv4 addresses

165k

IPv6 /64s

94.8B

Upstream graph

The networks AS44066 is seen behind, one and two hops out, drawn from real AS paths.

AS44066Toward the internet core
Upstream graph for AS44066: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS44066firstcolo GmbHThis networkAS174Cogent Communicat…AS1299Arelion (fka. Tel…AS2914NTT America, Inc.AS3257GTT Communication…AS42708Glesys ABAS8888xTom Pty LtdAS13030Init7 (Switzerlan…AS3130RGnet OUAS49544i3D.net B.VAS6667Elisa OyjAS398465Rackdog LLCAS6939Hurricane Electri…

Networks observed one and two hops upstream of AS44066 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

331

adjacent networks

Upstreams
3811%
Peers
27182%
Downstreams
227%

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

Upstreams of AS44066
NetworkCountryRelationshipPathsVantage pts
AS1299Arelion (fka. Telia Carrier)SEPeer2,48642
AS2914NTT America, Inc.USPeer2,30043
AS3257GTT Communications Inc.USPeer1,46556
AS42708Glesys ABSEPeer81018
AS174Cogent Communications, LLCUSPeer75215
AS3320Deutsche Telekom AGDEPeer58133
AS13030Init7 (Switzerland) Ltd.CHPeer4964
AS6939Hurricane Electric LLCUSPeer4159
AS38880Micron21 Datacentre Pty LtdAUPeer4132
AS18106Viewqwest Pte LtdSGPeer4082

Prefixes

All 70

The largest blocks AS44066 originates, widest first.

Largest prefixes originated by AS44066
PrefixAddressesVisibility
84.200.0.0/1665.5k81/81
82.211.0.0/1816.4k81/81
84.201.0.0/1816.4k81/81
212.224.64.0/1816.4k81/81
37.114.96.0/198.2k81/81
79.133.32.0/198.2k81/81
159.100.0.0/198.2k81/81
31.172.80.0/204.1k81/81
62.223.44.0/221k81/81
91.222.176.0/221k81/81

Routing health

How AS44066'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

  • Valid74.3%52
  • Invalid0.0%0
  • No ROA25.7%18

Propagation

  • Globally propagated90% of full-feed peers or more100.0%70
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 54 prefixes

IPv6 — 16 prefixes

  • /2934.4B × /6412.5%2
  • /324.3B × /6437.5%6
  • /36268M × /646.3%1
  • /3867.1M × /646.3%1
  • /4016.8M × /646.3%1
  • /4865.5k × /6431.3%5

Recent changes

Announcements that started or stopped since 28th Aug 2026.

No announcement by AS44066 started or stopped in this period.

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