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WorldIP.io
Autonomous System

AS43513

Sia Nano IT

Announced IPs
63,744
CIDR prefixes
45
ASN
AS43513

Reputation · trust score

A transparent 0–100 signal. Every entity starts at a neutral baseline of 65; threat-intel blocklists, exposure, reverse-DNS, routing and allocation each adjust it up or down. Higher is more trustworthy.

53/100
Caution
How this score is built

Experimental · trust-vectors model v1.3.0 — a transparent heuristic, not a definitive verdict. How it works →

⚠ 1 MOAS prefix — multiple origin ASNs detected

All MOAS anomalies →

A previously stable prefix originated by AS43513 is now also announced by another ASN (MOAS — Multiple-Origin AS), detected from our RIPE RIS collectors. Often benign (anycast, multi-homing, or a recent transfer) — but it can signal a route leak or prefix hijack, so it's worth inspecting.

PrefixOrigin ASNsLast detected (UTC)
185.81.128.218/32 AS43513, AS52173 2026-11-13 16:24:10

Network profile

Source: PeeringDB →
Network type NSP
Traffic level 20-50Gbps
Geographic scope Europe
Traffic ratio Mostly Inbound
Peering policy Open
IRR record AS-NANOIT

Present at 1 internet exchange: SMILE-IXP: VLAN333

Web3 footprint

AS43513 hosts 2 observed decentralized-network nodes across 1 network. It’s a neutral signal — it does not affect the reputation score. See the full web3 node map.

Top CIDR ranges

CIDRIPsPTR DensityOrganizationCountryStateCity
86.63.160.0/19 8.2K
0.2%
Sia Nano IT LV Riga Riga
80.250.48.0/20 4.1K
0.0%
Sia Nano IT LV Riga Riga
87.246.128.0/20 4.1K
0.1%
Sia Nano IT LV Riga Riga
89.248.80.0/20 4.1K
3.2%
Sia Nano IT LV Riga Riga
91.135.80.0/20 4.1K
0.4%
Sia Nano IT LV Tukums Municipality Tukums
5.44.216.0/21 2.0K
99.6%
Sia Nano IT LV — —
31.170.16.0/21 2.0K
0.7%
Sia Nano IT LV Saldus novads Saldus
46.19.144.0/21 2.0K
0.1%
Sia Nano IT LV — —
85.31.96.0/21 2.0K
9.8%
Sia Nano IT LV Riga Riga
85.254.32.0/21 2.0K
0.0%
Sia Nano IT LV Jūrmala Jūrmala
94.140.96.0/21 2.0K
0.0%
Sia Nano IT LV Ventspils Ventspils
94.140.112.0/21 2.0K
8.1%
Sia Nano IT LV — —
141.136.0.0/21 2.0K
0.1%
Sia Nano IT LV — —
178.249.32.0/21 2.0K
0.0%
Sia Nano IT LV — —
188.92.72.0/21 2.0K
3.6%
Sia Nano IT LV — —
45.131.100.0/22 1.0K
0.0%
Sia Nano IT IN — —
85.254.16.0/22 1.0K
0.9%
Sia Nano IT LV Riga Riga
85.254.24.0/22 1.0K
0.1%
Sia Nano IT LV — —
91.203.68.0/22 1.0K
18.9%
Sia Nano IT LV — —
94.140.120.0/22 1.0K
10.5%
Sia Nano IT LV Riga Riga
185.61.148.0/22 1.0K
22.5%
Sia Nano IT LV Riga Riga
185.71.128.0/22 1.0K
0.5%
Sia Nano IT LV Tukums Municipality Tukums
185.72.84.0/22 1.0K
3.1%
Sia Nano IT LV Riga Riga
185.72.204.0/22 1.0K
0.0%
Sia Nano IT LV Liepaja Liepāja
185.80.236.0/22 1.0K
0.1%
Sia Nano IT LV — —
185.81.128.0/22 1.0K
50.0%
Sia Nano IT LV Riga Riga
85.254.142.0/23 512
1.6%
Sia Nano IT LV — —
91.224.12.0/23 512
35.4%
Sia Nano IT LV Riga Riga
91.237.98.0/23 512
25.0%
Sia Nano IT LV — —
94.140.106.0/23 512
0.0%
Sia Nano IT LV Ventspils Ventspils
94.140.108.0/23 512
0.0%
Sia Nano IT LV Ventspils Ventspils
150.107.202.0/23 512
0.0%
Sia Nano IT IN — —
159.148.198.0/23 512
0.0%
Sia Nano IT LV — —
185.81.48.0/23 512
0.4%
Sia Nano IT LV — —
185.82.124.0/23 512
26.0%
Sia Nano IT LV — —
195.43.82.0/23 512
100.0%
Sia Nano IT LV — —
80.246.31.0/24 256
0.0%
Sia Nano IT IN — —
85.254.5.0/24 256
0.4%
Sia Nano IT LV Ķekava Rāmava
85.254.145.0/24 256
0.0%
Sia Nano IT LV — —
94.140.111.0/24 256
0.0%
Sia Nano IT LV — —
159.148.102.0/24 256
0.8%
Sia Nano IT LV — —
159.148.200.0/24 256
0.0%
Sia Nano IT LV — —
185.81.51.0/24 256
0.4%
Sia Nano IT LV — —
185.86.151.0/24 256
34.0%
Sia Nano IT LV — —
193.46.236.0/24 256
25.0%
Sia Nano IT LV — —

BGP Announced Prefixes

Live BGP anomalies →

Prefixes AS43513 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.

PrefixAnnouncement samplesLast seen
159.148.200.0/24 40,408 2026-11-13 15:51:30
159.148.198.0/23 40,095 2026-11-13 15:51:30
85.254.145.0/24 37,696 2026-11-13 15:51:30
85.254.142.0/23 37,647 2026-11-13 15:51:30
5.44.216.0/21 34,428 2026-11-13 15:57:01
85.254.16.0/22 29,881 2026-11-13 15:51:30
195.43.82.0/23 28,153 2026-11-13 15:51:11
185.81.130.0/23 26,793 2026-11-13 15:51:11
85.254.32.0/21 26,265 2026-11-13 15:51:30
91.135.80.0/20 26,058 2026-11-13 15:51:11
85.254.24.0/22 25,910 2026-11-13 15:51:30
91.135.86.0/24 25,530 2026-11-13 15:51:15
185.72.84.0/22 24,701 2026-11-13 15:51:11
188.92.72.0/21 24,654 2026-11-13 15:51:11
185.81.128.0/23 24,276 2026-11-13 15:51:11
185.71.128.0/22 24,245 2026-11-13 15:51:11
185.72.204.0/22 24,186 2026-11-13 15:51:11
185.80.236.0/22 24,172 2026-11-13 15:51:11
185.61.148.0/23 24,115 2026-11-13 15:51:11
185.86.151.0/24 24,103 2026-11-13 15:51:11
80.250.48.0/20 24,088 2026-11-13 15:51:11
159.148.102.0/24 23,991 2026-11-13 15:51:30
178.249.32.0/21 23,937 2026-11-13 15:51:11
185.61.150.0/24 23,884 2026-11-13 15:51:15
185.61.148.0/22 23,870 2026-11-13 15:51:11
185.81.48.0/22 23,859 2026-11-13 15:51:11
185.82.124.0/22 23,774 2026-11-13 15:51:11
141.136.0.0/21 23,499 2026-11-13 15:51:11
94.140.123.0/24 23,202 2026-11-13 15:51:11
94.140.96.0/19 23,117 2026-11-13 15:51:11
87.246.128.0/20 23,094 2026-11-13 15:51:30
94.140.112.0/23 22,940 2026-11-13 15:51:11
94.140.114.0/23 22,934 2026-11-13 15:51:11
45.131.100.0/22 22,911 2026-11-13 15:51:11
94.140.120.0/23 22,907 2026-11-13 15:51:11
94.140.116.0/22 22,890 2026-11-13 15:51:11
94.140.120.0/22 22,877 2026-11-13 15:51:11
91.224.12.0/23 22,823 2026-11-13 15:51:11
31.170.16.0/21 22,815 2026-11-13 15:51:15
91.237.98.0/23 22,315 2026-11-13 15:51:30
85.254.5.0/24 22,135 2026-11-13 15:51:30
193.46.236.0/24 21,369 2026-11-13 15:51:30
89.248.80.0/20 20,635 2026-11-13 15:51:30
91.203.68.0/22 20,293 2026-11-13 15:51:30
85.31.96.0/21 20,184 2026-11-13 15:51:30
86.63.160.0/19 20,142 2026-11-13 15:51:30
46.19.144.0/21 20,100 2026-11-13 15:51:30
150.107.202.0/23 17,554 2026-11-13 15:51:11
80.246.31.0/24 17,501 2026-11-13 15:51:11
94.140.102.0/24 17,170 2026-11-13 15:51:11

Showing top 50 of 181 announced prefixes by sample volume.

Frequently Asked Questions

What is AS43513?

AS43513 is an Autonomous System Number assigned to Sia Nano IT. An ASN identifies a network that controls a specific set of IP addresses and determines how traffic is routed across the internet via BGP (Border Gateway Protocol).

How many IP addresses does AS43513 announce?

AS43513 announces 63.7K IPv4 addresses distributed across 45 routed CIDR prefixes. The network is registered in Latvia.

Who operates AS43513?

AS43513 is operated by Sia Nano IT. The organization is based in Latvia. You can view all IP ranges and related ASNs on the organization page.

What country is AS43513 registered in?

AS43513 is registered in Latvia. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.

Last updated: 2026-11-13 16:24:05 UTC
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