All ASNs

Autonomous System details for AS49033

AS49033
Critical Core BV • criticalcore.nl

AS49033 — Critical Core BV

AS Name
CRITICALCORE
Country
The Netherlands (NL)
Website
Number of IPv4
14,848
Number of IPv6
1.27 × 1030
ASN type
ISP
Status
Allocated
Registry
RIPE
Allocated
October 04, 2016
Last updated
December 03, 2025

IP Ranges

16 IPv4 prefixes, 2 IPv6 prefixes
Prefix Company Number of IPs
45.8.236.0/22 Scalia B.V. 1,024
68.64.204.0/22 Ritesim.com Limited 1,024
94.46.216.0/22 Critical Core BV 1,024
95.143.97.0/24 Ritesim.com Limited 256
103.66.56.0/22 Ritesim.com Limited 1,024
103.104.60.0/22 Critical Core BV 1,024
113.212.72.0/22 Critical Core BV 1,024
185.91.92.0/22 Critical Core BV 1,024
185.116.144.0/22 WanScale B.V. 1,024
185.166.88.0/22 Critical Core BV 1,024
185.171.48.0/22 Critical Core BV 1,024
185.232.160.0/22 Critical Core BV 1,024
185.232.163.0/24 Critical Core BV 256
185.238.108.0/22 WANSCALE 02 1,024
204.8.80.0/22 Critical Core BV 1,024
216.152.64.0/22 Ritesim.com Limited 1,024
2a0f:dcc0::/29 Critical Core BV 6.34 × 1029
2a0f:ddc0::/29 Critical Core BV 6.34 × 1029

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.

Upstreams of AS49033

5 upstreams

AS49033 uses these Autonomous Systems as its upstreams.

An upstream (or transit provider) is another AS that AS49033 pays for full internet connectivity, allowing it to reach all global destinations and be reachable by them.

Downstreams of AS49033

1 downstreams

AS49033 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.