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Data as of Nov 6, 2026

121.54.0.0/17

No anonymizer space · no proxy exits in 30 days

Smart Broadband, Inc.

Announcement
this exact prefix
RPKI valid
Announced by
AS10139
Type
Mobile
>99% of it

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

PrefixOriginTypeHolderRPKI
121.54.16.0/20
since Aug 2010
AS10139MobileSmart Broadband, Inc.
121.54.16.0/21
since Aug 2010
AS10139MobileSmart Broadband, Inc.
121.54.28.0/22
since Apr 2025
AS10139MobileSmart Broadband, Inc.
121.54.32.0/20
since Aug 2010
AS10139MobileSmart Broadband, Inc.
121.54.32.0/21
since Aug 2010
AS10139MobileSmart Broadband, Inc.
121.54.40.0/21
since Aug 2010
AS10139MobileSmart Broadband, Inc.
121.54.40.0/22
since Apr 2025
AS10139MobileSmart Broadband, Inc.
121.54.48.0/22
since Nov 2024
AS10139MobileSmart Broadband, Inc.
121.54.64.0/20
since Nov 2024
AS10139MobileSmart Broadband, Inc.
121.54.80.0/20
since Sep 2010
AS10139MobileSmart Broadband, Inc.
121.54.80.0/21
since Jun 2011
AS10139MobileSmart Broadband, Inc.
121.54.96.0/20
since Apr 2025
AS10139MobileSmart Broadband, Inc.
121.54.104.0/21
since Jun 2025
AS10139MobileSmart Broadband, Inc.
121.54.112.0/20
since Sep 2010
AS10139MobileSmart Broadband, Inc.
121.54.112.0/21
since Jun 2011
AS10139MobileSmart Broadband, Inc.

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.

RangeAddressesNetnameHolderTypeCreatedAbuse contact
121.54.0.0/1732,768SMARTBRO-PHSmart Broadband, Inc. (ORG-SBI2-AP) · PHALLOCATED PORTABLE—allsmarttscipbb@smart.com.ph
└ 121.54.22.192/298Carmen-Copper-CorpCarmen Copper CorpASSIGNED NON-PORTABLE—allsmarttscipbb@smart.com.ph
└ 121.54.24.240/2816MTU-Citiland10-TowerMTU Citiland10 TowerASSIGNED NON-PORTABLE—allsmarttscipbb@smart.com.ph
└ 121.54.32.104/298PLDTPhilippine Long Distance Tel Co.ASSIGNED NON-PORTABLE—allsmarttscipbb@smart.com.ph
└ 121.54.32.252/304PLDTPhilippine Long Distance Tel Co.ASSIGNED NON-PORTABLE—allsmarttscipbb@smart.com.ph
└ 121.54.66.128/298Aboitiz-One-Inc-BacolodAboitiz One Inc BacolodASSIGNED NON-PORTABLE—allsmarttscipbb@smart.com.ph
└ 121.54.69.128/298Camiguin-Tel-CoopCamiguin Tel CoopASSIGNED NON-PORTABLE—allsmarttscipbb@smart.com.ph
└ 121.54.69.136/298Sam-Lim-CorpSam Lim CorpASSIGNED NON-PORTABLE—allsmarttscipbb@smart.com.ph
└ 121.54.76.192/298Eagle-ExpressEagle ExpressASSIGNED NON-PORTABLE—allsmarttscipbb@smart.com.ph
└ 121.54.76.240/298One-Commerce-Baclaran1One Commerce Baclaran1ASSIGNED NON-PORTABLE—allsmarttscipbb@smart.com.ph
└ 121.54.85.96 - 121.54.85.11318SAPPHIRE-CARGO-MOVERSSapphire Cargo MoverASSIGNED NON-PORTABLE—allsmarttscipbb@smart.com.ph
└ 121.54.101.192/298Marsman-KasilakMarsman KasilakASSIGNED NON-PORTABLE—allsmarttscipbb@smart.com.ph
└ 121.54.102.200/298Wilmar-Edible-OilWilmar Edible OilASSIGNED NON-PORTABLE—allsmarttscipbb@smart.com.ph
└ 121.54.116.192/298Phil-Resins-IncPhil Resins IncASSIGNED NON-PORTABLE—allsmarttscipbb@smart.com.ph

Composition

The types across the prefix's announced space, by addresses.

Announced space

Address share

Announced space

Types across the prefix

32,768 addresses
TypeAddressesShareRanges
Mobile32,650>99%28
Business1180.36%13

Network & registry

AnnouncementRouting historyRPKI & IRRWhois & abuse
Origin network

AS10139

PH
Name
Smart Broadband, Inc.
Type
Internet provider
Registered
Nov 21, 2006
Domain
smart.com.ph
Spamhaus ASN-DROP
not listed