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Autonomous System details for AS18183

AS18183

National Center for Research on Earthquake Engineering • narlabs.org.tw

AS18183 — National Center for Research on Earthquake Engineering

AS Name

NCREE

Country

Taiwan (TW)

Website

narlabs.org.tw

Number of IPv4

7,936

Number of IPv6

1.59 × 10²⁹

ASN type

Business

Status

Allocated

Registry

APNIC

Allocated

April 05, 2002

Last updated

January 08, 2026

IP Ranges

5 IPv4 prefixes, 5 IPv6 prefixes

Prefix	Company	Number of IPs
61.56.0.0/20	Government Service Network (GSN)	4,096
61.56.4.0/24	Government Service Network (GSN)	256
61.56.8.0/21	Government Service Network (GSN)	2,048
103.189.132.0/23	National Center for Research on Earthquake Engineering	512
202.5.12.0/22	National Center for Research on Earthquake Engineering	1,024
2001:4500::/32	National Applied Research Laboratories	7.92 × 10²⁸
2001:4500:1100::/40	National Applied Research Laboratories	3.09 × 10²⁶
2001:4500:1100::/41	National Applied Research Laboratories	1.55 × 10²⁶
2001:4500:1180::/41	National Applied Research Laboratories	1.55 × 10²⁶
2400:85a0::/32	National Center for Research on Earthquake Engineering	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 AS18183

0 peers

AS18183 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 AS18183

4 upstreams

AS7539 AS9264 AS9505 AS9681

AS18183 uses these Autonomous Systems as its upstreams.

An upstream (or transit provider) is another AS that AS18183 pays for full internet connectivity, allowing it to reach all global destinations and be reachable by them.

Downstreams of AS18183

1 downstreams

AS18426

AS18183 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.