IDT CORPORATION
IDT Corporation
Data as of 2026-11-01
GLEIF verified
LEI
549300JNTN7ZMJDFCL56
Registered name
IDT CORPORATION
Jurisdiction
Ultimate parent
No parent on file in GLEIF
This organisation
| Netblocks | 144 · 279,933 IPv4 addresses |
| IPv6 | 2 prefixes (largest 2406:2fc0::/32) |
| Registered in | United States (129) · Argentina (5) · Portugal (4) · Germany (3) · Taiwan (3) · Israel (2) |
| Also registered under this name | 209 netblocks across 44 separate records |
| Record ID | 259533974 |
| Registry | APNIC |
| Owner jurisdiction | US-DE |
| Customers | see who runs inside this network → |
Evidence & provenance ?
| Attribution | GLEIF legal-entity match |
| Legal identity | LEI 549300JNTN7ZMJDFCL56 |
| Shared handles | clustered on 35 shared RIR contact/maintainer handles |
| Registry names | 10 distinct registrant names across these blocks |
| full provenance (JSON) → · how attribution works · report an issue | |
IP Ranges (144)
⬇ export CSV| CIDR | Org name | Registry | Status | Confidence |
|---|---|---|---|---|
| 66.33.128.0/19 | IDT Corporation | BGP | ANNOUNCED | ● high |
| 66.33.132.0/24 | IDT Corporation | BGP | ANNOUNCED | ● high |
| 66.33.137.0/24 | IDT Corporation | BGP | ANNOUNCED | ● high |
| 66.33.141.0/24 | IDT Corporation | BGP | ANNOUNCED | ● high |
| 66.33.144.0/24 | IDT Corporation | BGP | ANNOUNCED | ● high |
| 66.33.146.0/24 | IDT Corporation | BGP | ANNOUNCED | ● high |
| 66.33.147.0/24 | IDT Corporation | BGP | ANNOUNCED | ● high |
| 66.33.155.0/24 | IDT Corporation | BGP | ANNOUNCED | ● high |
| 66.33.157.0/24 | IDT Corporation | BGP | ANNOUNCED | ● high |
| 66.33.158.0/24 | IDT Corporation | BGP | ANNOUNCED | ● high |
| 66.33.160.0/19 | IDT Corporation | BGP | ANNOUNCED | ● high |
| 66.33.166.0/24 | IDT Corporation | BGP | ANNOUNCED | ● high |
| 66.33.169.0/24 | IDT Corporation | BGP | ANNOUNCED | ● high |
| 66.33.176.0/24 | IDT Corporation | BGP | ANNOUNCED | ● high |
| 111.235.152.0/24 | IDT Corporation | BGP | ANNOUNCED | ● high |
| 169.132.0.0/16 | IDT Corporation | BGP | ANNOUNCED | ● high |
| 169.132.18.0/24 | IDT Corporation | BGP | ANNOUNCED | ● high |
| 169.132.52.0/24 | IDT Corporation | BGP | ANNOUNCED | ● high |
| 169.132.60.0/24 | IDT Corporation | BGP | ANNOUNCED | ● high |
| 169.132.90.0/24 | IDT Corporation | BGP | ANNOUNCED | ● high |
| 169.132.91.0/24 | IDT Corporation | BGP | ANNOUNCED | ● high |
| 169.132.116.0/23 | IDT Corporation | BGP | ANNOUNCED | ● high |
| 169.132.170.0/24 | IDT Corporation | BGP | ANNOUNCED | ● high |
| 169.132.196.0/23 | IDT Corporation | BGP | ANNOUNCED | ● high |
| 169.132.209.0/24 | IDT Corporation | BGP | ANNOUNCED | ● high |
| 169.132.219.0/24 | IDT Corporation | BGP | ANNOUNCED | ● high |
| 198.32.160.85/32 | IDT | PEERINGDB | ASSIGNED | ● high |
| 200.9.226.0/24 | IDT CORPORATION DE ARGENTINA S.A. | BGP | ANNOUNCED | ● high |
| 200.115.186.0/23 | IDT CORPORATION DE ARGENTINA S.A. | ARIN | ASSIGNED | ● high |
| 204.13.143.0/24 | IDT Corporation | BGP | ANNOUNCED | ● high |
| 204.235.80.0/24 | IDT Corporation | BGP | ANNOUNCED | ● high |
| 204.235.81.0/24 | IDT Corporation | BGP | ANNOUNCED | ● high |
| 205.228.245.0/24 | IDT Corporation | BGP | ANNOUNCED | ● high |
| 206.20.0.0/17 | IDT Corporation | BGP | ANNOUNCED | ● high |
| 206.20.0.0/16 | IDT Corporation | BGP | ANNOUNCED | ● high |
| 206.20.196.0/23 | IDT Corporation | BGP | ANNOUNCED | ● high |
| 206.20.201.0/24 | IDT Corporation | BGP | ANNOUNCED | ● high |
| 206.20.208.0/24 | IDT Corporation | BGP | ANNOUNCED | ● high |
| 206.20.219.0/24 | IDT Corporation | BGP | ANNOUNCED | ● high |
| 207.113.10.0/24 | IDT Corporation | BGP | ANNOUNCED | ● high |
| 207.202.0.0/17 | IDT Corporation | BGP | ANNOUNCED | ● high |
| 207.202.8.0/24 | IDT Corporation | BGP | ANNOUNCED | ● high |
| 207.202.9.0/24 | IDT Corporation | BGP | ANNOUNCED | ● high |
| 213.166.103.0/24 | IDT Corporation | BGP | ANNOUNCED | ● high |
| 216.53.0.0/18 | IDT Corporation | BGP | ANNOUNCED | ● high |
| 216.53.0.0/24 | IDT Corporation | BGP | ANNOUNCED | ● high |
| 216.53.2.0/24 | IDT Corporation | BGP | ANNOUNCED | ● high |
| 216.53.4.0/24 | IDT Corporation | BGP | ANNOUNCED | ● high |
| 216.53.5.0/24 | IDT Corporation | BGP | ANNOUNCED | ● high |
| 216.53.7.0/24 | IDT Corporation | BGP | ANNOUNCED | ● high |
| 216.53.14.0/24 | IDT Corporation | BGP | ANNOUNCED | ● high |
| 216.53.20.0/24 | IDT Corporation | BGP | ANNOUNCED | ● high |
| 216.53.64.0/24 | IDT Corporation | BGP | ANNOUNCED | ● high |
| 216.53.65.0/24 | IDT Corporation | BGP | ANNOUNCED | ● high |
| 216.53.66.0/24 | IDT Corporation | BGP | ANNOUNCED | ● high |
| 216.53.67.0/24 | IDT Corporation | BGP | ANNOUNCED | ● high |
| 216.53.68.0/24 | IDT Corporation | BGP | ANNOUNCED | ● high |
| 216.53.69.0/24 | IDT Corporation | BGP | ANNOUNCED | ● high |
| 216.53.70.0/24 | IDT Corporation | BGP | ANNOUNCED | ● high |
| 216.53.71.0/24 | IDT Corporation | BGP | ANNOUNCED | ● high |
| 216.53.72.0/24 | IDT Corporation | BGP | ANNOUNCED | ● high |
| 216.53.73.0/24 | IDT Corporation | BGP | ANNOUNCED | ● high |
| 216.53.74.0/24 | IDT Corporation | BGP | ANNOUNCED | ● high |
| 216.53.75.0/24 | IDT Corporation | BGP | ANNOUNCED | ● high |
| 216.53.76.0/24 | IDT Corporation | BGP | ANNOUNCED | ● high |
| 216.53.77.0/24 | IDT Corporation | BGP | ANNOUNCED | ● high |
| 216.53.78.0/24 | IDT Corporation | BGP | ANNOUNCED | ● high |
| 216.53.79.0/24 | IDT Corporation | BGP | ANNOUNCED | ● high |
| 216.53.80.0/24 | IDT Corporation | BGP | ANNOUNCED | ● high |
| 216.53.81.0/24 | IDT Corporation | BGP | ANNOUNCED | ● high |
| 216.53.82.0/24 | IDT Corporation | BGP | ANNOUNCED | ● high |
| 216.53.83.0/24 | IDT Corporation | BGP | ANNOUNCED | ● high |
| 216.53.84.0/24 | IDT Corporation | BGP | ANNOUNCED | ● high |
| 216.53.85.0/24 | IDT Corporation | BGP | ANNOUNCED | ● high |
| 216.53.86.0/24 | IDT Corporation | BGP | ANNOUNCED | ● high |
| 216.53.87.0/24 | IDT Corporation | BGP | ANNOUNCED | ● high |
| 216.53.88.0/24 | IDT Corporation | BGP | ANNOUNCED | ● high |
| 216.53.89.0/24 | IDT Corporation | BGP | ANNOUNCED | ● high |
| 216.53.90.0/24 | IDT Corporation | BGP | ANNOUNCED | ● high |
| 216.53.91.0/24 | IDT Corporation | BGP | ANNOUNCED | ● high |
| 216.53.92.0/24 | IDT Corporation | BGP | ANNOUNCED | ● high |
| 216.53.93.0/24 | IDT Corporation | BGP | ANNOUNCED | ● high |
| 216.53.94.0/24 | IDT Corporation | BGP | ANNOUNCED | ● high |
| 216.53.95.0/24 | IDT Corporation | BGP | ANNOUNCED | ● high |
| 216.53.96.0/24 | IDT Corporation | BGP | ANNOUNCED | ● high |
| 216.53.98.0/24 | IDT Corporation | BGP | ANNOUNCED | ● high |
| 216.53.99.0/24 | IDT Corporation | BGP | ANNOUNCED | ● high |
| 216.53.100.0/24 | IDT Corporation | BGP | ANNOUNCED | ● high |
| 216.53.101.0/24 | IDT Corporation | BGP | ANNOUNCED | ● high |
| 216.53.102.0/24 | IDT Corporation | BGP | ANNOUNCED | ● high |
| 216.53.103.0/24 | IDT Corporation | BGP | ANNOUNCED | ● high |
| 216.53.104.0/24 | IDT Corporation | BGP | ANNOUNCED | ● high |
| 216.53.105.0/24 | IDT Corporation | BGP | ANNOUNCED | ● high |
| 216.53.106.0/24 | IDT Corporation | BGP | ANNOUNCED | ● high |
| 216.53.107.0/24 | IDT Corporation | BGP | ANNOUNCED | ● high |
| 216.53.108.0/24 | IDT Corporation | BGP | ANNOUNCED | ● high |
| 216.53.109.0/24 | IDT Corporation | BGP | ANNOUNCED | ● high |
| 216.53.110.0/24 | IDT Corporation | BGP | ANNOUNCED | ● high |
| 216.53.111.0/24 | IDT Corporation | BGP | ANNOUNCED | ● high |
| 216.53.112.0/24 | IDT Corporation | BGP | ANNOUNCED | ● high |
| 216.53.113.0/24 | IDT Corporation | BGP | ANNOUNCED | ● high |
| 216.53.115.0/24 | IDT Corporation | BGP | ANNOUNCED | ● high |
| 216.53.116.0/24 | IDT Corporation | BGP | ANNOUNCED | ● high |
| 216.53.117.0/24 | IDT Corporation | BGP | ANNOUNCED | ● high |
| 216.53.118.0/24 | IDT Corporation | BGP | ANNOUNCED | ● high |
| 216.53.119.0/24 | IDT Corporation | BGP | ANNOUNCED | ● high |
| 216.53.120.0/24 | IDT Corporation | BGP | ANNOUNCED | ● high |
| 216.53.120.0/22 | IDT Corporation | BGP | ANNOUNCED | ● high |
| 216.53.121.0/24 | IDT Corporation | BGP | ANNOUNCED | ● high |
| 216.53.122.0/24 | IDT Corporation | BGP | ANNOUNCED | ● high |
| 216.53.123.0/24 | IDT Corporation | BGP | ANNOUNCED | ● high |
| 216.53.124.0/24 | IDT Corporation | BGP | ANNOUNCED | ● high |
| 216.53.125.0/24 | IDT Corporation | BGP | ANNOUNCED | ● high |
| 216.53.126.0/24 | IDT Corporation | BGP | ANNOUNCED | ● high |
| 216.53.127.0/24 | IDT Corporation | BGP | ANNOUNCED | ● high |
| 216.97.144.0/22 | IDT Corporation | BGP | ANNOUNCED | ● high |
| 66.33.128.0/18 | IDT Corporation | ARIN | DIRECT ALLOCATION | ● low |
| 79.99.195.128/28 | IDT | RIPE | ASSIGNED PA | ● low |
| 103.152.220.0/23 | IDT-NET | APNIC | ALLOCATED PORTABLE | ● low |
| 145.253.234.32/28 | IDT-NET | RIPE | ASSIGNED PA | ● low |
| 195.23.47.224/29 | IDT | RIPE | ASSIGNED PA | ● low |
| 195.23.47.248/29 | IDT | RIPE | ASSIGNED PA | ● low |
| 195.23.69.176/28 | IDT | RIPE | ASSIGNED PA | ● low |
| 195.23.120.24/29 | IDT | RIPE | ASSIGNED PA | ● low |
| 195.29.45.8/30 | IDT | RIPE | ASSIGNED PA | ● low |
| 199.248.148.0 – 199.248.153.255 | IDT Corporation | ARIN | DIRECT ALLOCATION | ● low |
| 202.148.210.0/23 | IDT-NET | APNIC | ALLOCATED PORTABLE | ● low |
| 204.13.140.0/22 | IDT Corporation | ARIN | DIRECT ALLOCATION | ● low |
| 204.235.80.0/20 | IDT Corporation | ARIN | DIRECT ALLOCATION | ● low |
| 205.147.128.0/19 | IDT Corporation | ARIN | DIRECT ALLOCATION | ● low |
| 207.113.0.0/17 | IDT Corporation | ARIN | DIRECT ALLOCATION | ● low |
| 207.202.71.0/24 | IDT Corporation | ARIN | ASSIGNMENT | ● low |
| 212.199.113.80/28 | IDT | RIPE | ASSIGNED PA | ● low |
| 212.199.174.160/28 | IDT | RIPE | ASSIGNED PA | ● low |
| 212.211.205.208/29 | IDT-NET | RIPE | ASSIGNED PA | ● low |
| 212.211.206.120/29 | IDT-NET | RIPE | ASSIGNED PA | ● low |
| 213.166.96.0/19 | IDT Corporation | RIPE | ALLOCATED PA | ● low |
| 216.53.0.0/17 | IDT Corporation | ARIN | DIRECT ALLOCATION | ● low |
| 216.53.118.0/23 | IDT Corporation | ARIN | ASSIGNMENT | ● low |
| 216.53.120.0/21 | IDT Corporation | ARIN | ASSIGNMENT | ● low |
| 216.97.128.0/19 | IDT Corporation | ARIN | DIRECT ALLOCATION | ● low |
| 223.26.4.0/23 | IDT-NET | APNIC | ALLOCATED NON-PORTABLE | ● low |
| 2406:2fc0::/32 | IDT-NET | APNIC | ALLOCATED PORTABLE | ● low |
| 2606:dc00::/32 | IDT Corporation | ARIN | DIRECT ALLOCATION | ● low |
IPv6 ranges (2)
Footprint over time
19 weekly snapshots · JSON
151
-15 netblocks since 2026-07-05
2026-07-05
peak 167
2026-11-01
Domains this organisation publishes
what's this?Network trust
what's this?
RPKI hygiene: B
how networks compare →
94.7%
of checked blocks have valid RPKI ROA coverage
(143 of 151)
Possible discrepancies (5)
These blocks are registered to IDT Corporation 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.
| 2406:2fc0::/32 /32 | authorized for AS134823 — Sky Digital Co., Ltd. |
| 216.97.144.0/22 /22 | authorized for AS6128 — Cablevision Systems Corp. |
| 103.152.220.0/23 /23 | authorized for AS138997 — UBITECH ASIA LIMITED |
| 202.148.210.0/23 /23 | authorized for AS152179 — GLOBAL COMMUNICATION NETWORK LIMITED |
| 223.26.4.0/23 /23 | authorized for AS152179 — GLOBAL COMMUNICATION NETWORK LIMITED |
NIC Handles
AR-ICAS-LACNIC
ARCOR-MNT
AS30428
AS4361
AS52410
AS7270
AS7270
AS9116-MNT
AT939-AP
DUMY-RIPE
DUMY-RIPE
Epsilon-MTN
+23 more