Data as of Nov 10, 2026
121.243.76.0/23
No anonymizer space · no proxy exits in 30 daysTATA Communications formerly VSNL is Leading ISP · space held by Tata Communications Limited
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Proxy exits | Holder | RPKI |
|---|---|---|---|---|---|
| 121.243.0.0/17 since Jun 2009 | AS4755 | Business | 11 | Tata Communications Limited |
More specific
Announcements inside
| Prefix | Origin | Type | Holder | RPKI |
|---|---|---|---|---|
| 121.243.76.0/24 since Sep 2007 | AS4755 | Internet provider | Tata Communications Limited |
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 |
|---|---|---|---|---|---|---|
| 121.240.0.0/13 | 524,288 | TATACOMM-IN | Tata Communications Limited (ORG-TCL6-AP) · IN | ALLOCATED PORTABLE | — | 4755abuse@ |
| └ 121.243.77.0/28 | 16 | DECISION_ | NASIK- Leased line DECISION SOFTWARE PVT.LTD. | ASSIGNED NON-PORTABLE | — | 4755abuse@ via TATACOMM-IN |
A contact marked “via” is the registry's: the record names none of its own, so the registry hands down its parent's.
Composition
The types across the prefix's announced space, by addresses.
Announced space
Address share
Announced space
Types across the prefix
512 addresses
| Type | Addresses | Share | Ranges | |
|---|---|---|---|---|
| Internet provider | 496 | 97% | 2 | |
| Business | 16 | 3.1% | 1 |
Network & registry
Origin network
AS4755
IN
- Name
- TATA Communications formerly VSNL is Leading ISP
- Type
- Internet provider
- Registered
- May 13, 1996
- Domain
- tatacommunications.com
- Website
- www.tatacommunications.com
- Industry
- Internet Service Provider (ISP)
- Spamhaus ASN-DROP
- not listed
Routing timeline
Covering aggregate above, the prefix's own history below
Summary
Routing history
- Pattern
- Stable
- First seen
- Jul 2007
- Current origin since
- Jul 2007 · 19 yr
- Origin networks
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 121.243.76.0/23 | AS4755 | /23 | APNIC | RPKI valid |
| 121.243.0.0/17 | AS4755 | /17 | APNIC | Too specific |
IRR
Route objects on the exact prefix
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS4755 | RADB | VSNL Route Object | MAINT-VSNL-IN | Nov 13, 2023 |
Whois
Registration for this announcement
- Range
- 121.
240. 0. 0/ 13 - Netname
- TATACOMM-IN
- Registrant
- Tata Communications Limited
- Registrant country
- IN
- Organization
- Not stated by the registry
- Type
- ALLOCATED PORTABLE
- Created
- Not stated by the registry
- Updated
- Dec 8, 2020
- Maintainer
- APNIC-HM
- RIR
- APNIC
- Country
- IN
- Delegated
- Aug 14, 2006
- Status
- assigned
Report abuse
Abuse contact
- 4755abuse@
tatacommunications. com - Name
- ABUSE TATACOMMIN
- Handle
- AT1356-AP