AS133111 CERNET New Technology Co., Ltd

CNT-northChina - CERNET New Technology Co., Ltd · registered in China

IPv4 addresses25,85613 prefixes · <0.001% of announced IPv4

Rank in China#183largest network in CN by IPv4 space, of 601 · <0.01% of CN

Rank worldwide#5,346of 79,396 networks with IPv4

IPv62,055 x /32 (134,741,761 x /48)13 prefixes

CountryChina5,117 ASNs registered there

Open AS133111 in ASN lookup Look up an IP in this network (42.201.32.1) All networks in China

IPv4 prefixes

All 13 prefixes, in address order.

42.201.32.0/23
42.201.34.0/23
42.201.36.0/22
42.201.40.0/21
42.201.48.0/20
42.245.192.0/20
42.245.208.0/21
42.245.216.0/22
42.245.220.0/23
42.245.222.0/23
42.245.224.0/19
43.252.48.0/24
103.81.200.0/22

IPv6 prefixes

All 13 prefixes.

2400:a980::/34
2400:a980:4100::/40
2400:a980:4200::/39
2400:a980:4400::/38
2400:a980:4800::/37
2400:a980:5000::/36
2400:a980:6000::/35
2400:a980:8000::/33
2400:a981::/32
2400:a982::/31
2400:a984::/30
2403:a200:9999::/48
240d:4000::/21

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AS136959#185 UNICOM-FuoShan-IDC - China Unicom Guangdong IP network23,552

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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