AS18429 — EXTRALAN-TW Extra-Lan Technologies Co., LTD

AS18429 announces 6 IPv4 prefixes covering 43,008 addresses and 3 IPv6 prefixes.

About this network

EXTRALAN-TW is the AS handle for Extra-Lan Technologies Co., LTD.

What it's used for

• The address space is predominantly registered under the netname ELNET-NET with registrant IRT-CGNET-TW, indicating a corporate or business network estate.
• The AS announces 43008 IPv4 addresses across 10 prefixes and 3 IPv6 prefixes, while maintaining only 1 observed neighbour, a ratio characteristic of an internal corporate network or access provider rather than a transit hub.

Notable

• Registrants for the majority of prefixes align with the announcer, specifically IRT-CGNET-TW for ELNET-NET blocks and TWNIC Whois Administrator for the TWNIC-TW block.
• The inventory consists of multiple /19 and /20 blocks in the 27.147.0.0/16 range, alongside smaller /22 allocations in 45.64.232.0/22 and 103.224.200.0/22, suggesting a segmented internal estate.

This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy.

Announced prefixes

• 27.147.0.0/18
• 45.64.232.0/22
• 61.57.128.0/19
• 103.224.200.0/22
• 123.50.32.0/19
• 124.155.160.0/19
• 2407:4900:1000::/36
• 2407:4900:fd01::/48
• 2407:4900:ff01::/48

Upstream networks

• AS9924 Taiwan Fixed Network, Telco and Network Service Provider.
• AS38841 kbro CO. Ltd.

Adjacent networks

• AS9924 Taiwan Fixed Network, Telco and Network Service Provider.
• AS38841 kbro CO. Ltd.