All ASNs

Autonomous System details for AS16246

AS16246
O2 Czech Republic, a.s. • nej.cz

AS16246 — O2 Czech Republic, a.s.

AS Name
AS16246
Country
Czechia (CZ)
Website
Number of IPv4
133,120
Number of IPv6
7.13 × 1029
ASN type
ISP
Status
Allocated
Registry
RIPE
Allocated
October 21, 2003
Last updated
June 20, 2024

IP Ranges

13 IPv4 prefixes, 2 IPv6 prefixes
Prefix Company Number of IPs
77.87.232.0/21 O2 Czech Republic, a.s. 2,048
78.108.152.0/21 Nej.cz s.r.o. 2,048
82.150.160.0/19 O2 Czech Republic, a.s. 8,192
86.63.192.0/19 O2 Czech Republic, a.s. 8,192
91.197.116.0/22 O2 Czech Republic, a.s. 1,024
92.240.160.0/19 O2 Czech Republic, a.s. 8,192
94.74.192.0/18 BackBone 16,384
95.143.128.0/20 LTnet.cz infrastructure 4,096
176.98.96.0/20 O2 Czech Republic, a.s. 4,096
178.17.96.0/20 Nej.cz s.r.o. 4,096
185.15.252.0/22 SporkNeT s.r.o. 1,024
188.175.0.0/16 O2 Czech Republic, a.s. 65,536
213.180.32.0/19 O2 Czech Republic, a.s. 8,192
2a02:350::/29 O2 Czech Republic, a.s. 6.34 × 1029
2a03:b4c0::/32 O2 Czech Republic, a.s. 7.92 × 1028

IP ranges are the different blocks of IP addresses advertised by an Autonomous System (AS). These ranges can be used by the same organization operating the AS, or by different organizations.

Peers of AS16246

0 peers

AS16246 has no peers recorded.

Peering is a direct, often free, traffic exchange between Autonomous Systems (ASNs). They share routes only to their own networks and customers, making connections faster and cheaper for that specific traffic, without providing full internet access to each other.

Upstreams of AS16246

1 upstreams

AS16246 uses these Autonomous Systems as its upstreams.

An upstream (or transit provider) is another AS that AS16246 pays for full internet connectivity, allowing it to reach all global destinations and be reachable by them.

Downstreams of AS16246

13 downstreams

AS16246 provides internet connectivity to these downstream Autonomous Systems.

A downstream is a customer Autonomous System that pays another AS (its provider) for internet access. The provider AS carries the downstream's traffic and makes its network reachable.

Our IP address tools

Explore all tools

What is my IP?

Discover your public IP address and detailed information about your connection.

CIDR to IP Range Converter (IPv4 and IPv6)

Convert CIDR notation to IP address ranges and vice versa. Useful for network configuration and security.

IP to Hostname/rDNS Lookup

Perform a reverse DNS (rDNS) lookup to get the hostname for an IP address.

IPv6 Expander/Collapser

Expand or collapse IPv6 addresses to their full or shortened forms for better readability and usage.