Data as of Nov 8, 2026
66.33.128.0/19
No anonymizer space · no proxy exits in 30 daysIDT Corporation
Announcement
this exact prefix
RPKI valid
Announced by
Type
Business
Recent change
New origin Sep 18, 2026
from AS7270 IDT Corporation, after 2.3 years unannounced
Announcements
Nesting
More-specifics by size
Sized by addresses, colored by each announcement's type. Click a tile with children to zoom in, a leaf to open it.
More specific
Announcements inside
| Prefix | Origin | Type | Holder | RPKI |
|---|---|---|---|---|
| 66.33.132.0/24 since Mar 2025 | AS7270 | Business | IDT Corporation | |
| 66.33.137.0/24 since Sep 2022 | AS7270 | Business | IDT Corporation | |
| 66.33.141.0/24 since Sep 2022 | AS7270 | Business | IDT Corporation | |
| 66.33.144.0/24 since Sep 2022 | AS7270 | Business | IDT Corporation | |
| 66.33.146.0/24 since May 2022 | AS7270 | Business | IDT Corporation | |
| 66.33.147.0/24 since May 2024 | AS7270 | Business | IDT Corporation | |
| 66.33.155.0/24 since May 2024 | AS7270 | Business | IDT Corporation | |
| 66.33.157.0/24 since Oct 2023 | AS7270 | Business | IDT Corporation | |
| 66.33.158.0/24 since Sep 2022 | AS7270 | Business | IDT Corporation |
Registrations in this block
The registry's network records over the announcement: those covering it, widest first, then every record inside it, under its parent.
| Range | Addresses | Netname | Holder | Type | Created | Abuse contact |
|---|---|---|---|---|---|---|
| 66.33.128.0/18 | 16,384 | N2P-1 | IDT Corporation (IDTCO) · US | Direct Allocation | Oct 23, 2000 | gnoc@ |
| └ 66. | 1,536 | N2P-LON | net2phone (C00165506) · US | Reassigned | Apr 5, 2001 | gnoc@ via N2P-1 |
| └ 66.33.134.0/23 | 512 | N2P-LON-1 | unknown | — | — | — |
| └ 66.33.136.0/22 | 1,024 | N2P-EWH1 | Net2phone (C00165027) · US | Reassigned | Apr 4, 2001 | gnoc@ via N2P-1 |
| └ 66.33.140.0/22 | 1,024 | N2P-NWB1 | net2phone (C00165028) · US | Reassigned | Apr 4, 2001 | gnoc@ via N2P-1 |
| └ 66.33.144.0/22 | 1,024 | N2P-HAC1 | net2phone (C00165029) · US | Reassigned | Apr 4, 2001 | gnoc@ via N2P-1 |
| └ 66.33.148.0/22 | 1,024 | N2P-NWB2 | unknown | — | — | — |
| └ 66. | 768 | N2P-6 | unknown | — | — | — |
| └ 66.33.156.0/24 | 256 | GCS-66-33-156-0 | unknown | — | — | — |
A contact marked “via” is the registry's: the record names none of its own, so the registry hands down its parent's.
Network & registry
Origin network
AS7270
US
- Name
- IDT Corporation
- Type
- Business
- Registered
- Oct 30, 1996
- Domain
- idt.net
- Website
- www.idt.net
- Industry
- Retail Stores, Wholesale, and E-commerce Sites
- Spamhaus ASN-DROP
- not listed
Routing timeline
Who has announced this prefix
Summary
Routing history
- Pattern
- Stable
- First seen
- May 2005
- Current origin since
- Sep 18, 2026 · 2 mo
- Origin networks
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 66.33.128.0/19 | AS7270 | /19 | ARIN | RPKI valid |
| 66.33.128.0/18 | AS7270 | /18 | ARIN | Too specific |
IRR
Route objects on the exact prefix
IRR inside
Route objects inside
| Prefix | Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|---|
| 66.33.129.0/24 | AS7270 | ARIN | IDT Corporation | MNT-IDTCO | Sep 24, 2026 |
| 66.33.131.0/24 | AS7270 | ARIN | IDT Corporation | MNT-IDTCO | Sep 24, 2026 |
| 66.33.136.0/24 | AS7270 | ARIN | IDT Corporation | MNT-IDTCO | Sep 24, 2026 |
| 66.33.143.0/24 | AS7270 | RADB | IDT Corp | MAINT-AS7270 | Nov 13, 2023 |
| 66.33.143.0/24 | AS7270 | ARIN | IDT Corporation | MNT-IDTCO | Sep 24, 2026 |
| 66.33.148.0/24 | AS7270 | RADB | IDT Corp | MAINT-AS7270 | Nov 13, 2023 |
| 66.33.148.0/24 | AS7270 | ARIN | IDT Corporation | MNT-IDTCO | Sep 24, 2026 |
| 66.33.156.0/24 | AS7270 | RADB | IDT Corp | MAINT-AS7270 | Nov 13, 2023 |
| 66.33.156.0/24 | AS7270 | ARIN | IDT Corporation | MNT-IDTCO | Sep 24, 2026 |
Whois
Registration for this announcement
- Range
- 66.
33. 128. 0/ 18 - Netname
- N2P-1
- Registrant
- IDT Corporation
- Organization
- IDT Corporation (IDTCO)
- Org address
- 520 Broad St, Newark, NJ, 07102
- Org country
- US
- Type
- Direct Allocation
- Handle
- NET-66-33-128-0-1
- Parent
- NET-66-0-0-0-0
- Created
- Oct 23, 2000
- RIR
- ARIN
- Country
- US
- Delegated
- Oct 23, 2000
- Status
- assigned
Report abuse
Abuse contact
- gnoc@
idt. net - Name
- GNOC
- Phone
- +1-973-438-4662
- Handle
- GNOC8-ARIN