AS17645 ASN - NTT SINGAPORE PTE LTD

NTT-SG-AP - ASN - NTT SINGAPORE PTE LTD · registered in Singapore

IPv4 addresses76,54427 prefixes · 0.002% of announced IPv4

Rank in Singapore#14largest network in SG by IPv4 space, of 443 · 0.90% of SG

Rank worldwide#2,262of 79,396 networks with IPv4

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

CountrySingapore457 ASNs registered there

Open AS17645 in ASN lookup Look up an IP in this network (58.65.0.1) All networks in Singapore

IPv4 prefixes

All 27 prefixes, in address order.

58.65.0.0/21
58.65.8.0/22
58.65.12.0/24
58.65.14.0/23
58.65.16.0/22
58.65.20.0/22
58.65.24.0/23
58.65.26.0/23
58.65.28.0/22
116.51.0.0/22
116.51.4.0/24
116.51.5.0/24
116.51.6.0/23
116.51.8.0/23
116.51.10.0/23
116.51.12.0/22
116.51.32.0/21
116.51.48.0/20
116.51.64.0/18
116.51.128.0/17
175.28.8.0/22
202.136.160.0/22
202.136.164.0/23
202.136.166.0/24
202.136.167.0/24
202.136.168.0/21
202.136.176.0/20

IPv6 prefixes

All 1 prefix.

2402:2c00::/32

Similar-sized networks in Singapore

ASNNameIPv4 addresses

AS138345#11 STARHUB-MOBILE2 - StarHub Ltd154,624

AS45143#12 SINGTELMOBILE-AS-AP - SINGTEL MOBILE INTERNET SERVICE PROVIDER Singapore109,568

AS4628#13 PACIFICINTERNET-AS-AP - Pacific Internet Pte Ltd104,704

AS140666#15 ADPL-AS-AP - ANY DIGITAL PTE. LTD.75,264

AS4817#16 STPL-SG-AP - Simba Telecom Pte Ltd71,680

AS140928#17 STARHUB-T20025A - T2002569,632

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