CTCSCI TECH LIMITED

Data as of 2026-08-16
BGP inherited
Cluster stats
Netblocks61 · 132,873 IPv4 addresses
IPv6 15 prefixes (largest 2401:3620::/32)
Registered in Hong Kong (40) · Japan (3) · Singapore (2) · AG (1) · United States (1)
Cluster ID222393150
RegistryAPNIC
Customersfind customers using this network →
Evidence & provenance ?
Attribution BGP parent (inherited)
Shared handles clustered on 13 shared RIR contact/maintainer handles
Registry names 3 distinct registrant names across these blocks
full provenance (JSON) → · how attribution works · report an issue

Footprint over time

8 weekly snapshots · JSON
62 -4 netblocks since 2026-07-05
2026-07-05 peak 66 2026-08-16

IP Ranges (61)

showing 50 of 61 — see all — ⬇ export CSV
CIDR Org name Registry Status Confidence
27.111.230.241/32 CTCSCI TECH LIMITED PEERINGDB ASSIGNED ● high
36.255.57.144/32 CTCSCI TECH LIMITED PEERINGDB ASSIGNED ● high
101.203.90.117/32 CTCSCI TECH LIMITED PEERINGDB ASSIGNED ● high
103.16.103.76/32 CTCSCI TECH LIMITED PEERINGDB ASSIGNED ● high
103.77.210.0/23 CTCSCI TECH LIMITED BGP ANNOUNCED ● high
103.77.210.0/24 CTCSCI TECH LIMITED BGP ANNOUNCED ● high
103.77.211.0/24 CTCSCI TECH LIMITED BGP ANNOUNCED ● high
123.255.91.72/32 CTCSCI TECH LIMITED PEERINGDB ASSIGNED ● high
163.61.161.18/32 CTCSCI TECH LIMITED PEERINGDB ASSIGNED ● high
178.18.234.17/32 CTCSCI TECH LIMITED PEERINGDB ASSIGNED ● high
203.190.231.12/32 CTCSCI TECH LIMITED PEERINGDB ASSIGNED ● high
206.54.42.0/24 CTCSCI TECH LIMITED BGP ANNOUNCED ● high
210.173.177.151/32 CTCSCI TECH LIMITED PEERINGDB ASSIGNED ● high
2001:7fa:0:1::ca28:a148/128 CTCSCI TECH LIMITED PEERINGDB ASSIGNED ● high
2001:7fa:7:1::9886:1/128 CTCSCI TECH LIMITED PEERINGDB ASSIGNED ● high
2001:de8:4::9886:1/128 CTCSCI TECH LIMITED PEERINGDB ASSIGNED ● high
2001:de8:5::9886:1/128 CTCSCI TECH LIMITED PEERINGDB ASSIGNED ● high
2001:de8:7::14:9886:1/128 CTCSCI TECH LIMITED PEERINGDB ASSIGNED ● high
2001:de8:c::9886:1/128 CTCSCI TECH LIMITED PEERINGDB ASSIGNED ● high
2001:de8:12:100::103:76/128 CTCSCI TECH LIMITED PEERINGDB ASSIGNED ● high
2401:3620:211::/48 CTCSCI TECH LIMITED BGP ANNOUNCED ● high
2401:3620:221::/48 CTCSCI TECH LIMITED BGP ANNOUNCED ● high
2401:3620:231::/48 CTCSCI TECH LIMITED BGP ANNOUNCED ● high
2401:3620:2201::/48 CTCSCI TECH LIMITED BGP ANNOUNCED ● high
2401:3620:2301::/48 CTCSCI TECH LIMITED BGP ANNOUNCED ● high
2401:f460:210::9886:1/128 CTCSCI TECH LIMITED PEERINGDB ASSIGNED ● high
2a03:5f80:4:3::234:17/128 CTCSCI TECH LIMITED PEERINGDB ASSIGNED ● high
103.122.20.0/22 CTCSCI TECH LIMITED APNIC ALLOCATED PORTABLE ● medium
2401:3620::/32 CTCSCI TECH LIMITED APNIC ALLOCATED PORTABLE ● medium
177.0.128.0/20 CTCSCI TECH LIMITED APNIC ALLOCATED PORTABLE ● low
177.2.16.0/20 CTCSCI TECH LIMITED APNIC ALLOCATED PORTABLE ● low
177.2.176.0/20 CTCSCI TECH LIMITED APNIC ALLOCATED PORTABLE ● low
177.3.32.0/20 CTCSCI TECH LIMITED APNIC ALLOCATED PORTABLE ● low
177.3.80.0/20 CTCSCI TECH LIMITED APNIC ALLOCATED PORTABLE ● low
177.4.0.0/20 CTCSCI TECH LIMITED APNIC ALLOCATED PORTABLE ● low
177.4.32.0/20 CTCSCI TECH LIMITED APNIC ALLOCATED PORTABLE ● low
177.4.80.0/20 CTCSCI TECH LIMITED APNIC ALLOCATED PORTABLE ● low
177.5.48.0/20 CTCSCI TECH LIMITED APNIC ALLOCATED PORTABLE ● low
177.5.64.0/20 CTCSCI TECH LIMITED APNIC ALLOCATED PORTABLE ● low
177.5.112.0/20 CTCSCI TECH LIMITED APNIC ALLOCATED PORTABLE ● low
177.5.176.0/20 CTCSCI TECH LIMITED APNIC ALLOCATED PORTABLE ● low
177.6.176.0/20 CTCSCI TECH LIMITED APNIC ALLOCATED PORTABLE ● low
177.7.128.0/20 CTCSCI TECH LIMITED APNIC ALLOCATED PORTABLE ● low
177.201.224.0/20 CTCSCI TECH LIMITED APNIC ALLOCATED PORTABLE ● low
179.236.96.0/20 CTCSCI TECH LIMITED APNIC ALLOCATED PORTABLE ● low
187.53.80.0/20 CTCSCI TECH LIMITED APNIC ALLOCATED PORTABLE ● low
187.53.192.0/20 CTCSCI TECH LIMITED APNIC ALLOCATED PORTABLE ● low
187.54.48.0/20 CTCSCI TECH LIMITED APNIC ALLOCATED PORTABLE ● low
187.55.112.0/20 CTCSCI TECH LIMITED APNIC ALLOCATED PORTABLE ● low
187.126.64.0/20 CTCSCI TECH LIMITED APNIC ALLOCATED PORTABLE ● low

IPv6 ranges (15)

CIDR
2401:3620::/32
2401:3620:211::/48
2401:3620:2201::/48
2401:3620:221::/48
2401:3620:2301::/48
2401:3620:231::/48
2001:7fa:0:1::ca28:a148/128
2001:7fa:7:1::9886:1/128
2001:de8:12:100::103:76/128
2001:de8:4::9886:1/128
2001:de8:5::9886:1/128
2001:de8:7::14:9886:1/128
2001:de8:c::9886:1/128
2401:f460:210::9886:1/128
2a03:5f80:4:3::234:17/128

Domains hosted in this network

what's this?
vivoglobal.com vivo.com vivo.com.cn biqushu8.org gnmjapp.cn eepe.net 999txt.org x33xsc.com chenxia.org bookbenxs.com yueguang.org

Network trust

what's this?
RPKI hygiene: C how networks compare →
64.5% of checked blocks have valid RPKI ROA coverage (40 of 62)
Possible discrepancies (17)

These blocks are registered to CTCSCI TECH LIMITED but cryptographically authorized for a different, unrelated network (4 distinct holders) — often M&A history, multi-homing, or outsourced/managed hosting, occasionally worth a closer look.

177.0.128.0/20 /20 authorized for AS400618 — Prime Security Corp.
177.2.16.0/20 /20 authorized for AS8796 — FASTNET DATA INC
177.3.32.0/20 /20 authorized for AS8796 — FASTNET DATA INC
177.4.0.0/20 /20 authorized for AS18186 — Nebula Global LLC
177.4.32.0/20 /20 authorized for AS18186 — Nebula Global LLC
177.4.80.0/20 /20 authorized for AS8796 — FASTNET DATA INC
177.5.48.0/20 /20 authorized for AS8796 — FASTNET DATA INC
177.5.64.0/20 /20 authorized for AS18186 — Nebula Global LLC
177.5.112.0/20 /20 authorized for AS18186 — Nebula Global LLC
177.5.176.0/20 /20 authorized for AS18186 — Nebula Global LLC
177.6.176.0/20 /20 authorized for AS18186 — Nebula Global LLC
177.7.128.0/20 /20 authorized for AS8796 — FASTNET DATA INC
177.201.224.0/20 /20 authorized for AS8796 — FASTNET DATA INC
187.53.192.0/20 /20 authorized for AS400618 — Prime Security Corp.
191.223.32.0/20 /20 authorized for AS18186 — Nebula Global LLC
+2 more — see the REST API

NIC Handles

AC2739-AP AH1111-AP APNIC-HM AS151797 AS152111 AS152112 AS9886 CTLA8-AP CTLA8-AP HKCI1-AP HKCI1-AP MAINT-CTCSCITECHLIMITED-HK +1 more