subnet.im

AS44558Netonline Bilisim Sirketi LTD

TürkiyeRegistryRIPE NCCTypeEyeball

As of 10th November 2026, AS44558 (Netonline Bilisim Sirketi LTD), an access network registered in Türkiye with RIPE NCC, originates 240 IPv4 prefixes covering 64k addresses and 1 IPv6 prefix. By IPv4 address space that makes it the 4,068th-largest of the 80,723 networks we see originating IPv4, and the 18th-largest of 871 in Türkiye. It is seen behind 1 upstream network, most often AS9121 (Turk Telekom), 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

240

IPv6 prefixes

1

IPv4 addresses

64k

IPv6 /64s

34.4B

Upstream graph

The networks AS44558 is seen behind, one and two hops out, drawn from real AS paths.

AS44558Toward the internet core
Upstream graph for AS44558: 3 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS44558Netonline Bilisim…This networkAS9121Turk TelekomAS1299Arelion (fka. Tel…AS2914NTT America, Inc.

Networks observed one and two hops upstream of AS44558 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

8

adjacent networks

Upstreams
113%
Peers
450%
Downstreams
338%

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

Upstreams of AS44558
NetworkCountryRelationshipPathsVantage pts
AS9121Turk TelekomTRPeer18,592138

Prefixes

All 241

The largest blocks AS44558 originates, widest first.

Largest prefixes originated by AS44558
PrefixAddressesVisibility
159.255.40.0/212k76/76
185.37.184.0/221k76/76
45.130.156.0/2425676/76
46.30.176.0/2425676/76
46.30.177.0/2425676/76
46.30.178.0/2425676/76
46.30.179.0/2425676/76
46.30.180.0/2425676/76
46.30.181.0/2425676/76
46.30.182.0/2425676/76

Routing health

How AS44558'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%241
  • Invalid0.0%0
  • No ROA0.0%0

Propagation

  • Globally propagated90% of full-feed peers or more100.0%241
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 240 prefixes

IPv6 — 1 prefixes

  • /2934.4B × /64100.0%1

Recent changes

Announcements that started or stopped since 11th Oct 2026.

No announcement by AS44558 started or stopped in this period.

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