Data as of Nov 6, 2026
121.54.0.0/18
No anonymizer space · no proxy exits in 30 daysSmart Broadband, Inc.
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 |
|---|---|---|---|---|
| 121.54.16.0/20 since Aug 2010 | AS10139 | Mobile | Smart Broadband, Inc. | |
| 121.54.16.0/21 since Aug 2010 | AS10139 | Mobile | Smart Broadband, Inc. | |
| 121.54.28.0/22 since Apr 2025 | AS10139 | Mobile | Smart Broadband, Inc. | |
| 121.54.32.0/20 since Aug 2010 | AS10139 | Mobile | Smart Broadband, Inc. | |
| 121.54.32.0/21 since Aug 2010 | AS10139 | Mobile | Smart Broadband, Inc. | |
| 121.54.40.0/21 since Aug 2010 | AS10139 | Mobile | Smart Broadband, Inc. | |
| 121.54.40.0/22 since Apr 2025 | AS10139 | Mobile | Smart Broadband, Inc. | |
| 121.54.48.0/22 since Nov 2024 | AS10139 | Mobile | Smart Broadband, Inc. |
Registrations in this block
The registry's network records over this block, widest first, each under its parent.
| Range | Addresses | Netname | Holder | Type | Created | Abuse contact |
|---|---|---|---|---|---|---|
| 121.54.0.0/17 | 32,768 | SMARTBRO-PH | Smart Broadband, Inc. (ORG-SBI2-AP) · PH | ALLOCATED PORTABLE | — | allsmarttscipbb@ |
| └ 121.54.22.192/29 | 8 | Carmen-Copper-Corp | Carmen Copper Corp | ASSIGNED NON-PORTABLE | — | allsmarttscipbb@ |
| └ 121.54.24.240/28 | 16 | MTU-Citiland10-Tower | MTU Citiland10 Tower | ASSIGNED NON-PORTABLE | — | allsmarttscipbb@ |
| └ 121.54.32.104/29 | 8 | PLDT | Philippine Long Distance Tel Co. | ASSIGNED NON-PORTABLE | — | allsmarttscipbb@ |
| └ 121.54.32.252/30 | 4 | PLDT | Philippine Long Distance Tel Co. | ASSIGNED NON-PORTABLE | — | allsmarttscipbb@ |
Composition
The types across the prefix's announced space, by addresses.
Announced space
Address share
Announced space
Types across the prefix
16,384 addresses
| Type | Addresses | Share | Ranges | |
|---|---|---|---|---|
| Mobile | 16,348 | >99% | 13 | |
| Business | 36 | 0.22% | 4 |
Network & registry
Announced by
Covering announcement 121.54.0.0/17
- Prefix
- 121.54.0.0/17
- Announced by
- AS10139 Smart Broadband, Inc.
- Type
- Mobile
- RPKI
- RPKI valid
- Netname
- SMARTBRO-PH
- Registrant
- Smart Broadband, Inc.
- RIR
- APNIC
Origin network
AS10139
PH
- Name
- Smart Broadband, Inc.
- Type
- Internet provider
- Registered
- Nov 21, 2006
- Domain
- smart.com.ph
- Spamhaus ASN-DROP
- not listed
Routing timeline
Who has announced 121.54.0.0/17
121.54.0.0/17
Routing history
- Pattern
- Stable
- First seen
- Nov 2006
- Current origin since
- Nov 2006 · 20 yr
- Origin networks
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 121.54.0.0/17 | AS10139 | /24 | APNIC | RPKI valid |
IRR
Route objects on 121.54.0.0/17
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS10139 | NTTCOM | Weroam Meridian | MAINT-PLDT | Jun 21, 2006 |
Whois
Registration for this announcement
- Range
- 121.
54. 0. 0/ 17 - Netname
- SMARTBRO-PH
- Registrant
- Smart Broadband, Inc.
- Registrant country
- PH
- Organization
- Not stated by the registry
- Type
- ALLOCATED PORTABLE
- Created
- Not stated by the registry
- Updated
- Oct 20, 2020
- Maintainer
- APNIC-HM
- RIR
- APNIC
- Country
- PH
- Delegated
- Jun 19, 2006
- Status
- assigned
Report abuse
Abuse contact
- allsmarttscipbb@
smart. com. ph - Name
- ABUSE SMARTBROPH
- Handle
- AS2810-AP