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Autonomous System

AS51248

Host-Telecom.com s.r.o.

Announced IPs
13,056
CIDR prefixes
16
ASN
AS51248

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.

70/100
Moderate
How this score is built

Experimental · trust-vectors model v1.2.0 — a transparent heuristic, not a definitive verdict. How it works →

Network profile

Source: PeeringDB →
Network type Content
Geographic scope Not Disclosed
Traffic ratio Mostly Outbound
Peering policy Open
IRR record AS-HOST-TELECOM-CZ

Present at 1 internet exchange: NIX.CZ: Public peering VLAN

Web3 footprint

AS51248 hosts 1 observed decentralized-network node 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
5.43.224.0/21 2.0K
96.0%
Host-Telecom.com s.r.o. CZ South Bohemian Region Veselí nad Lužnicí
158.255.32.0/21 2.0K
99.1%
Host-Telecom.com s.r.o. CZ
176.74.216.0/21 2.0K
98.3%
Host-Telecom.com s.r.o. CZ South Bohemian Region České Budějovice
188.124.56.0/21 2.0K
97.7%
Host-Telecom.com s.r.o. CZ Prague Prague
185.8.56.0/22 1.0K
99.1%
Host-Telecom.com s.r.o. CZ
193.161.84.0/22 1.0K
98.7%
Host-Telecom.com s.r.o. CZ
135.106.134.0/23 512
0.0%
Host-Telecom.com s.r.o. SC
185.8.58.0/23 512
0.0%
Host-Telecom.com s.r.o. CZ
13.143.234.0/24 256
0.0%
Host-Telecom.com s.r.o. US
45.10.191.0/24 256
0.0%
Host-Telecom.com s.r.o. BG
45.129.142.0/24 256
96.9%
Host-Telecom.com s.r.o. RU
85.137.25.0/24 256
0.0%
Host-Telecom.com s.r.o. AE
91.209.77.0/24 256
99.6%
Host-Telecom.com s.r.o. RU
185.8.56.0/24 256
0.0%
Host-Telecom.com s.r.o. CZ
194.87.52.0/24 256
0.4%
Host-Telecom.com s.r.o. CZ Prague Prague
194.87.126.0/24 256
0.0%
Host-Telecom.com s.r.o. CZ Prague Prague
195.133.35.0/24 256
3.1%
Host-Telecom.com s.r.o. CZ Prague Prague
212.192.210.0/24 256
0.0%
Host-Telecom.com s.r.o. CZ Prague Prague
185.8.57.128/25 128
0.0%
Host-Telecom.com s.r.o. CZ
185.8.57.64/26 64
0.0%
Host-Telecom.com s.r.o. CZ
185.8.57.32/27 32
0.0%
Host-Telecom.com s.r.o. CZ
185.8.57.16/28 16
0.0%
Host-Telecom.com s.r.o. CZ
185.8.57.0/29 8
0.0%
Host-Telecom.com s.r.o. CZ
185.8.57.12/30 4
0.0%
Host-Telecom.com s.r.o. CZ
185.8.57.10/31 2
0.0%
Host-Telecom.com s.r.o. CZ
185.8.57.8 1
0.0%
Host-Telecom.com s.r.o. CZ
185.8.57.9 1
0.0%
Host-Telecom.com s.r.o. RU

BGP Announced Prefixes

Live BGP anomalies →

Prefixes AS51248 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.

PrefixAnnouncement samplesLast seen
176.74.216.0/21 179,154 2026-09-18 09:50:13
158.255.39.0/24 60,414 2026-09-18 09:47:32
5.43.224.0/21 48,234 2026-09-18 09:51:42
185.8.56.0/22 47,042 2026-09-18 09:51:42
135.106.134.0/23 44,207 2026-09-18 09:50:13
45.10.191.0/24 36,216 2026-09-18 09:51:42
188.124.56.0/21 35,355 2026-09-18 09:51:42
158.255.32.0/21 34,382 2026-09-18 09:50:13
193.161.84.0/22 33,545 2026-09-18 09:51:42
91.209.77.0/24 32,773 2026-09-18 09:47:32
45.129.142.0/24 16,084 2026-09-18 09:28:42
85.137.25.0/24 15,399 2026-09-18 09:28:42
195.133.35.0/24 12,231 2026-09-18 09:46:25
194.87.126.0/24 11,885 2026-09-18 09:46:25
194.87.52.0/24 11,876 2026-09-18 09:46:25
212.192.210.0/24 11,812 2026-09-18 09:46:25
13.143.234.0/24 5,492 2026-09-18 09:28:42
91.199.154.10/32 583 2026-09-18 08:55:47
91.199.137.167/32 582 2026-09-18 08:55:47
160.20.109.0/24 152 2026-08-03 11:12:55
160.20.109.112/32 135 2026-09-18 08:55:47
160.20.109.40/32 134 2026-09-18 08:55:47
160.20.109.169/32 134 2026-09-18 08:55:47
160.20.109.187/32 134 2026-09-18 08:55:47
160.20.109.156/32 134 2026-09-18 08:55:47
141.133.175.11/32 48 2026-09-18 08:55:47
141.133.172.134/32 46 2026-09-18 08:55:47
188.130.208.87/32 27 2026-09-18 08:55:47
91.184.249.83/32 1 2026-09-15 10:46:13
193.124.56.196/32 1 2026-09-15 10:58:44

Frequently Asked Questions

What is AS51248?

AS51248 is an Autonomous System Number assigned to Host-Telecom.com s.r.o.. 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 AS51248 announce?

AS51248 announces 13.1K IPv4 addresses distributed across 16 routed CIDR prefixes. The network is registered in Czechia.

Who operates AS51248?

AS51248 is operated by Host-Telecom.com s.r.o.. The organization is based in Czechia. You can view all IP ranges and related ASNs on the organization page.

What country is AS51248 registered in?

AS51248 is registered in Czechia. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.

Last updated: 2026-09-18 09:54:06 UTC
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