FASTNET DATA INC
BGP inherited
Cluster stats
| Netblocks | 365 |
| Cluster ID | 204409368 |
| Registry | AFRINIC |
| Customers | find customers using this network → |
Evidence & provenance ?
| Attribution | BGP parent (inherited) |
| Shared handles | clustered on 23 shared RIR contact/maintainer handles |
| Registry names | 12 distinct registrant names across these blocks |
| full provenance (JSON) → · how attribution works | |
Footprint over time
4 weekly snapshots · JSON
365
-61 netblocks since 2026-07-05
2026-07-05
peak 426
2026-07-13
IP Ranges (365)
showing 50 of 365 — see all — ⬇ export CSV| CIDR | Org name | Registry | Status | Confidence |
|---|---|---|---|---|
| 98.158.28.0/24 | FASTNET DATA INC | ARIN | ● high | |
| 23.135.56.0/24 | FASTNET DATA INC | BGP | ANNOUNCED | ● low |
| 23.138.148.0/24 | FASTNET DATA INC | BGP | ANNOUNCED | ● low |
| 23.159.248.0/24 | FASTNET DATA INC | BGP | ANNOUNCED | ● low |
| 23.165.40.0/24 | FASTNET DATA INC | BGP | ANNOUNCED | ● low |
| 23.165.248.0/24 | FASTNET DATA INC | BGP | ANNOUNCED | ● low |
| 23.166.168.0/24 | FASTNET DATA INC | BGP | ANNOUNCED | ● low |
| 23.169.184.0/24 | FASTNET DATA INC | BGP | ANNOUNCED | ● low |
| 23.170.48.0/24 | FASTNET DATA INC | BGP | ANNOUNCED | ● low |
| 23.170.49.0/24 | FASTNET DATA INC | BGP | ANNOUNCED | ● low |
| 23.185.168.0/24 | FASTNET DATA INC | BGP | ANNOUNCED | ● low |
| 23.185.200.0/24 | FASTNET DATA INC | BGP | ANNOUNCED | ● low |
| 23.186.88.0/24 | FASTNET DATA INC | BGP | ANNOUNCED | ● low |
| 38.47.236.0/22 | FASTNET DATA INC | BGP | ANNOUNCED | ● low |
| 38.47.248.0/21 | FASTNET DATA INC | BGP | ANNOUNCED | ● low |
| 38.49.0.0/21 | FASTNET DATA INC | BGP | ANNOUNCED | ● low |
| 38.49.8.0/21 | FASTNET DATA INC | BGP | ANNOUNCED | ● low |
| 38.49.16.0/21 | FASTNET DATA INC | BGP | ANNOUNCED | ● low |
| 38.49.24.0/22 | FASTNET DATA INC | BGP | ANNOUNCED | ● low |
| 38.49.28.0/22 | FASTNET DATA INC | BGP | ANNOUNCED | ● low |
| 38.49.28.0/24 | FASTNET DATA INC | BGP | ANNOUNCED | ● low |
| 38.49.29.0/24 | FASTNET DATA INC | BGP | ANNOUNCED | ● low |
| 38.49.30.0/24 | FASTNET DATA INC | BGP | ANNOUNCED | ● low |
| 38.49.31.0/24 | FASTNET DATA INC | BGP | ANNOUNCED | ● low |
| 38.49.32.0/22 | FASTNET DATA INC | BGP | ANNOUNCED | ● low |
| 38.49.37.0/24 | FASTNET DATA INC | BGP | ANNOUNCED | ● low |
| 38.49.38.0/24 | FASTNET DATA INC | BGP | ANNOUNCED | ● low |
| 38.49.39.0/24 | FASTNET DATA INC | BGP | ANNOUNCED | ● low |
| 38.49.40.0/24 | FASTNET DATA INC | BGP | ANNOUNCED | ● low |
| 38.49.41.0/24 | FASTNET DATA INC | BGP | ANNOUNCED | ● low |
| 38.49.42.0/24 | FASTNET DATA INC | BGP | ANNOUNCED | ● low |
| 38.49.43.0/24 | FASTNET DATA INC | BGP | ANNOUNCED | ● low |
| 38.49.44.0/24 | FASTNET DATA INC | BGP | ANNOUNCED | ● low |
| 38.49.45.0/24 | FASTNET DATA INC | BGP | ANNOUNCED | ● low |
| 38.49.46.0/24 | FASTNET DATA INC | BGP | ANNOUNCED | ● low |
| 38.49.47.0/24 | FASTNET DATA INC | BGP | ANNOUNCED | ● low |
| 38.49.48.0/22 | FASTNET DATA INC | BGP | ANNOUNCED | ● low |
| 38.49.52.0/24 | FASTNET DATA INC | BGP | ANNOUNCED | ● low |
| 38.49.52.0/22 | FASTNET DATA INC | BGP | ANNOUNCED | ● low |
| 38.49.53.0/24 | FASTNET DATA INC | BGP | ANNOUNCED | ● low |
| 38.49.54.0/24 | FASTNET DATA INC | BGP | ANNOUNCED | ● low |
| 38.49.55.0/24 | FASTNET DATA INC | BGP | ANNOUNCED | ● low |
| 38.49.56.0/24 | FASTNET DATA INC | BGP | ANNOUNCED | ● low |
| 38.49.57.0/24 | FASTNET DATA INC | BGP | ANNOUNCED | ● low |
| 38.49.58.0/24 | FASTNET DATA INC | BGP | ANNOUNCED | ● low |
| 38.49.59.0/24 | FASTNET DATA INC | BGP | ANNOUNCED | ● low |
| 38.49.60.0/22 | FASTNET DATA INC | BGP | ANNOUNCED | ● low |
| 38.55.0.0/21 | FASTNET DATA INC | BGP | ANNOUNCED | ● low |
| 38.55.8.0/21 | FASTNET DATA INC | BGP | ANNOUNCED | ● low |
| 38.55.16.0/24 | FASTNET DATA INC | BGP | ANNOUNCED | ● low |
Network trust
what's this?
RPKI hygiene: D
how networks compare →
24.4%
of checked blocks have valid RPKI ROA coverage
(89 of 365)
Wholesale/transit re-announcements (16)
These blocks are registered to FASTNET DATA INC but cryptographically authorized across 6 different networks — typical for a large wholesale or transit carrier whose address space is substantially re-announced by downstream customers under their own ASNs, not individually noteworthy.
| 154.205.192.0/20 /20 | authorized for AS140227 — Hong Kong Communications International Co., Limited |
| 154.205.208.0/20 /20 | authorized for AS140227 — Hong Kong Communications International Co., Limited |
| 38.47.248.0/21 /21 | authorized for AS7607 — JT TELECOM INTERNATIONAL PTE.LTD. |
| 38.181.40.0/21 /21 | authorized for AS7607 — JT TELECOM INTERNATIONAL PTE.LTD. |
| 38.181.56.0/21 /21 | authorized for AS7607 — JT TELECOM INTERNATIONAL PTE.LTD. |
| 154.19.112.0/21 /21 | authorized for AS7607 — JT TELECOM INTERNATIONAL PTE.LTD. |
| 154.19.120.0/21 /21 | authorized for AS7607 — JT TELECOM INTERNATIONAL PTE.LTD. |
| 38.47.236.0/22 /22 | authorized for AS7607 — JT TELECOM INTERNATIONAL PTE.LTD. |
| 154.19.88.0/22 /22 | authorized for AS7607 — JT TELECOM INTERNATIONAL PTE.LTD. |
| 154.19.100.0/22 /22 | authorized for AS7607 — JT TELECOM INTERNATIONAL PTE.LTD. |
| 177.2.20.0/22 /22 | authorized for AS400618 — Prime Security Corp. |
| 177.5.52.0/22 /22 | authorized for AS400618 — Prime Security Corp. |
| 125.252.80.0/24 /24 | authorized for AS4637 — Telstra International Limited |
| 45.205.7.0/24 /24 | authorized for AS17561 — Larus Limited |
| 45.205.7.0/24 /24 | authorized for AS17561 — Larus Limited |
+1 more — see the REST API
NIC Handles
ABUSE8399-ARIN
AS140227
AS702-MNT
AS8796
AT940-AP
CIL1-MNT
CIS1-AFRINIC
CIS1-AFRINIC
DUMY-RIPE
DUMY-RIPE
FD-298
FN-RIPE
+11 more