AS137538 Caldawin Software Technology Company Limited

CSTCL-AS-AP - Caldawin Software Technology Company Limited · registered in Macao

IPv4 addresses5121 prefixes · <0.001% of announced IPv4

Rank in Macao#9largest network in MO by IPv4 space, of 9 · 0.14% of MO

Rank worldwide#46,580of 79,396 networks with IPv4

IPv61 x /32 (65,536 x /48)1 prefixes

CountryMacao10 ASNs registered there

Open AS137538 in ASN lookup Look up an IP in this network (103.5.218.1) All networks in Macao

IPv4 prefixes

All 1 prefix, in address order.

103.5.218.0/23

IPv6 prefixes

All 1 prefix.

2400:aae0::/32

Similar-sized networks in Macao

ASNNameIPv4 addresses

AS136793#6 MCN-AS-AP - MACAU COMMUNICATION NETWORKS COMPANY LIMITED2,048

AS134550#7 CITM-NGIA-MRC-MO - Centro de Informacoes Tecnologia de Macau2,048

AS138164#8 MUST-AS-AP - Macau University of Science and Technology1,536

IP-to-ASN data: iptoasn.com (public domain). Snapshot downloaded 2026-11-11, refreshed daily. Ranges are what each network announces in BGP, not registry allocations. Data sources