CNT Fiber
Cluster stats
Netblocks71
All fragments 160 blocks across 49 clusters
Cluster ID191584643
RegistryAPNIC
Customersfind customers using this network →
Evidence & provenance ?
Attribution unresolved
Shared handles clustered on 18 shared RIR contact/maintainer handles
Registry names 18 distinct registrant names across these blocks
full provenance (JSON) → · how attribution works

Footprint over time

2 weekly snapshots · JSON
71 0 netblocks since 2026-07-05
2026-07-05 peak 71 2026-07-06

IP Ranges (71)

showing 50 of 71 — see all — ⬇ export CSV
CIDR Org name Registry Status Confidence
58.185.52.16/30 CNT-SG APNIC ASSIGNED NON-PORTABLE ● high
58.185.156.212/30 CNT-SG APNIC ASSIGNED NON-PORTABLE ● high
58.185.201.200/29 CNT-SG APNIC ASSIGNED NON-PORTABLE ● high
191.37.72.0/21 CNT Fiber BGP ANNOUNCED ● high
191.37.72.0/23 CNT Fiber BGP ANNOUNCED ● high
191.37.72.0/22 CNT Fiber BGP ANNOUNCED ● high
191.37.72.0/24 CNT Fiber BGP ANNOUNCED ● high
191.37.73.0/24 CNT Fiber BGP ANNOUNCED ● high
191.37.74.0/23 CNT Fiber BGP ANNOUNCED ● high
191.37.74.0/24 CNT Fiber BGP ANNOUNCED ● high
191.37.75.0/24 CNT Fiber BGP ANNOUNCED ● high
191.37.76.0/22 CNT Fiber BGP ANNOUNCED ● high
191.37.76.0/23 CNT Fiber BGP ANNOUNCED ● high
191.37.76.0/24 CNT Fiber BGP ANNOUNCED ● high
191.37.77.0/24 CNT Fiber BGP ANNOUNCED ● high
191.37.78.0/24 CNT Fiber BGP ANNOUNCED ● high
191.37.78.0/23 CNT Fiber BGP ANNOUNCED ● high
191.37.79.0/24 CNT Fiber BGP ANNOUNCED ● high
203.93.142.0/24 CNT-CN APNIC ASSIGNED NON-PORTABLE ● high
2804:14e0::/34 CNT Fiber BGP ANNOUNCED ● high
2804:14e0::/33 CNT Fiber BGP ANNOUNCED ● high
2804:14e0::/36 CNT Fiber BGP ANNOUNCED ● high
2804:14e0::/32 CNT Fiber BGP ANNOUNCED ● high
2804:14e0:1000::/36 CNT Fiber BGP ANNOUNCED ● high
2804:14e0:2000::/36 CNT Fiber BGP ANNOUNCED ● high
2804:14e0:3000::/36 CNT Fiber BGP ANNOUNCED ● high
2804:14e0:4000::/34 CNT Fiber BGP ANNOUNCED ● high
2804:14e0:4000::/36 CNT Fiber BGP ANNOUNCED ● high
2804:14e0:5000::/36 CNT Fiber BGP ANNOUNCED ● high
2804:14e0:6000::/36 CNT Fiber BGP ANNOUNCED ● high
2804:14e0:7000::/36 CNT Fiber BGP ANNOUNCED ● high
2804:14e0:8000::/34 CNT Fiber BGP ANNOUNCED ● high
2804:14e0:8000::/36 CNT Fiber BGP ANNOUNCED ● high
2804:14e0:8000::/33 CNT Fiber BGP ANNOUNCED ● high
2804:14e0:9000::/36 CNT Fiber BGP ANNOUNCED ● high
2804:14e0:a000::/36 CNT Fiber BGP ANNOUNCED ● high
2804:14e0:b000::/36 CNT Fiber BGP ANNOUNCED ● high
2804:14e0:c000::/34 CNT Fiber BGP ANNOUNCED ● high
2804:14e0:c000::/36 CNT Fiber BGP ANNOUNCED ● high
2804:14e0:d000::/36 CNT Fiber BGP ANNOUNCED ● high
2804:14e0:e000::/36 CNT Fiber BGP ANNOUNCED ● high
2804:14e0:f000::/36 CNT Fiber BGP ANNOUNCED ● high
2804:14e0::/32 UNKNOWN LACNIC allocated ● medium
124.162.58.80/30 cnt-com APNIC ASSIGNED NON-PORTABLE ● low
202.82.6.0/28 CNT-HK APNIC ASSIGNED NON-PORTABLE ● low
212.13.120.0/24 CNT-PNP RIPE ASSIGNED PA ● low
212.15.117.0/24 CNT-PNP RIPE ASSIGNED PA ● low
212.15.123.0 – 212.15.124.255 CNT-PNP RIPE ASSIGNED PA ● low
212.15.125.0 – 212.15.126.255 CNT-LAN RIPE ASSIGNED PA ● low
212.78.199.96/29 CNT-NET1 RIPE ASSIGNED PA ● low

Network trust

what's this?
RPKI hygiene: C how networks compare →
64.8% of checked blocks have valid RPKI ROA coverage (46 of 71)
Possible discrepancies (1)

These blocks are registered to CNT Fiber but cryptographically authorized for a different, unrelated network (1 distinct holder) — often M&A history, multi-homing, or outsourced/managed hosting, occasionally worth a closer look.

203.93.142.0/24 /24 authorized for AS9929 — CNCGROUP IP network of ShangHai IDC

NIC Handles

AP706-AP AS263356 BNA2-AP CNT-MNT DH19-AP DUMY-RIPE DUMY-RIPE HL1135-AP HL1135-AP MAINT-CHINAGBN-AP MAINT-CNCGROUP-CQ MAINT-HK-PCCW-BIA-CS +6 more