CTCSCI TECH LIMITED
Cluster stats
| Netblocks | 66 |
| Cluster ID | 191610993 |
| Registry | APNIC |
| Customers | find customers using this network → |
Evidence & provenance ?
| Attribution | unresolved |
| Shared handles | clustered on 15 shared RIR contact/maintainer handles |
| Registry names | 5 distinct registrant names across these blocks |
| full provenance (JSON) → · how attribution works | |
IP Ranges (66)
showing 50 of 66 — 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 |
| 103.77.210.0/23 | CTCSCI TECH LIMITED | APNIC | ALLOCATED PORTABLE | ● medium |
| 103.122.20.0/22 | CTCSCI TECH LIMITED | APNIC | ALLOCATED PORTABLE | ● medium |
| 2401:3620::/32 | CTCSCI TECH LIMITED | APNIC | ALLOCATED PORTABLE | ● medium |
| 103.77.210.0/24 | CTCSCI | APNIC | ALLOCATED NON-PORTABLE | ● low |
| 103.77.211.0/24 | CTCSCI | APNIC | ALLOCATED NON-PORTABLE | ● low |
| 103.147.200.0/24 | CTCSCI-HK | APNIC | ALLOCATED NON-PORTABLE | ● low |
| 103.147.201.0/24 | CTCSCI-HK | APNIC | ASSIGNED NON-PORTABLE | ● low |
| 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 |
Network trust
what's this?
RPKI hygiene: C
how networks compare →
60.6%
of checked blocks have valid RPKI ROA coverage
(40 of 66)
Possible discrepancies (15)
These blocks are registered to CTCSCI TECH LIMITED but cryptographically authorized for a different, unrelated network (5 distinct holders) — often M&A history, multi-homing, or outsourced/managed hosting, occasionally worth a closer look.
| 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 |
| 177.5.48.0/20 /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 |
| 187.53.192.0/20 /20 | authorized for AS400618 — Prime Security Corp. |
| 191.223.32.0/20 /20 | authorized for AS18186 — Nebula Global LLC |
| 103.122.20.0/22 /22 | authorized for AS154561 — CEX Limited |
| 103.147.200.0/24 /24 | authorized for AS140042 — Zhipinshang (Hongkong) Electron Communication Technology Limited |
| 103.147.201.0/24 /24 | authorized for AS140042 — Zhipinshang (Hongkong) Electron Communication Technology Limited |
NIC Handles
AC2739-AP
AI608-AP
APNIC-HM
AS151797
AS152111
AS152112
AS9886
CTLA8-AP
CTLA8-AP
MAINT-CTCSCITECHLIMITED-HK
MAINT-CTCSCITECHLIMITED-HK
MAINT-IZEC-HK
+3 more