128.121.0.0/22

AS3949 · NTT America, Inc.

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Summary

Country	unknown
Domain
ASN	AS3949
Parent Range	128.121.0.0/16
Registry	RWHOIS
ID	USV4-128-121-0-0.127.0.0.1/32,USV4-128-121-0-0

WHOIS Details

No whois details available for this network

Overlapping Ranges

BGP prefixes that contain 128.121.0.0/22

Range	ASN	Company	Num of IPs
128.121.0.0/16	AS2914	NTT America, Inc.	65,536

Nearby Ranges

BGP prefixes that overlap with 128.121.0.0/16

Range	ASN	Company	Num of IPs
128.121.0.0/16	AS2914	NTT America, Inc.	65,536
128.121.128.0/17	AS203020	NTT DATA	32,768
128.121.64.0/18	AS6079	RACKDOG	16,384
128.121.64.0/18	AS7029	RACKDOG	16,384
128.121.44.0/23	AS3949	NTT America	512
128.121.15.0/24	AS204670	Quinstreet Inc	256
128.121.11.0/24	AS204670	NTT Com - Mitsubishi Corporation	256
128.121.32.0/24	AS204670	NTT DATA	256

Hosted domains

There are 17 domain names hosted across 15 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
128.121.3.66	nttnet.com.br	2
128.121.2.170	windowsphoneconnection.com	2
128.121.0.240	shuats.net	1
128.121.2.164	windowsmobiletraining.com	1
128.121.3.131	rda-jsc.org	1
128.121.3.153	sagecorporatedev.com	1
128.121.2.169	pellaexperience.com	1
128.121.2.167	windowsmobilesales.com	1
128.121.2.174	windowsphonevip.com	1
128.121.3.154	nfpa70e.com	1
128.121.2.163	windowsphoneexpert.com	1
128.121.2.160	comcasttraining.net	1
128.121.2.104	gpilearnconnect.com	1
128.121.2.100	apielearning.org	1
128.121.2.127	qwesttuition.com	1

Hosted domains API

Our Hosted Domains API, or Reverse IP API returns a full list of domains that are hosted on a single IP address.

Useful for Cybersecurity

Read more

Pingable IPs

1,016 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address	ASN	Details
128.121.2.137	AS3949 NTT America, Inc.	`33.94ms` from Amsterdam, NL
128.121.0.127	AS3949 NTT America, Inc.	`33.92ms` from Amsterdam, NL
128.121.1.244	AS3949 NTT America, Inc.	`33.93ms` from Amsterdam, NL
128.121.3.192	AS3949 NTT America, Inc.	`33.93ms` from Amsterdam, NL

Other Pingable IPs

Below is a random selection of 25 IPs that replied to an ICMP ping during our most recent internet scan.

IP Address	ASN	Details
59.96.63.198	AS9829 National Internet Backbone	`13.12ms` from Bengaluru, IN
87.177.22.230	AS3320 Deutsche Telekom AG	`6.43ms` from Duesseldorf, DE
103.239.67.22	AS135918 VIET DIGITAL TECHNOLOGY LIABILITY COMPANY	`0.34ms` from Ho Chi Minh City, VN
43.154.41.198	AS132203 Tencent Building, Kejizhongyi Avenue	`0.39ms` from Hong Kong, HK
162.193.180.6	AS7018 AT&T Enterprises, LLC	`2.42ms` from Houston, US
124.149.249.134	AS7545 TPG Telecom Limited	`1.45ms` from Melbourne, AU
50.73.150.198	AS7922 Comcast Cable Communications, LLC	`5.50ms` from Miami, US
80.139.104.118	AS3320 Deutsche Telekom AG	`5.65ms` from Nuernberg, DE
85.167.139.70	AS2119 Telenor Norge AS	`6.41ms` from Oslo, NO
20.19.15.182	AS8075 Microsoft Corporation	`0.18ms` from Paris, FR
108.2.129.102	AS701 Verizon Business	`1.23ms` from Philadelphia, US
201.124.143.38	AS8151 UNINET	`3.76ms` from Santiago de Queretaro, MX
20.70.201.230	AS8075 Microsoft Corporation	`0.74ms` from Sydney, AU
96.82.26.182	AS7922 Comcast Cable Communications, LLC	`8.17ms` from Washington, US
79.127.118.182	AS43754 Asiatech Data Transmission company	`17.14ms` from Yerevan, AM
179.15.229.198	AS27831 Colombia Móvil	`15.70ms` from Bogotá, CO
18.219.122.22	AS16509 Amazon.com, Inc.	`0.16ms` from Columbus, US
34.41.43.198	AS396982 Google LLC	`0.10ms` from Council Bluffs, US
160.3.87.86	AS11492 CABLE ONE, INC.	`18.69ms` from Dallas, US
107.140.220.54	AS7018 AT&T Enterprises, LLC	`3.62ms` from Dallas, US
96.90.166.54	AS7922 Comcast Cable Communications, LLC	`5.44ms` from Denver, US
40.172.49.150	AS16509 Amazon.com, Inc.	`0.15ms` from Dubai, AE
50.185.150.166	AS7922 Comcast Cable Communications, LLC	`5.46ms` from Miami, US
79.58.204.150	AS3269 Telecom Italia S.p.A.	`4.18ms` from Milan, IT
188.170.22.166	AS25159 PJSC MegaFon	`1.43ms` from Moscow, RU

Traceroute

Below is a recent traceroute taken from the IPinfo ProbeNet to an IP in this range. Learn more.

traceroute -a -n -q1 -f2 128.121.1.24

traceroute to 128.121.1.24 (128.121.1.24): 64 hops max, 52 byte packets

2 [] 84.17.33.138 0.196 ms

3 *

4 *

5 *

6 [AS2914] 129.250.5.245 5.372 ms

7 *

8 *

9 *

10 *

11 [AS3949] 128.121.1.24 33.966 ms

Measurement taken from

IPinfo ProbeNet in Amsterdam, NL

On December 20th 2025

What are IP address ranges?

IP address ranges, or netblocks, are groups of related IP addresses. They are usually represented as a base IP address, followed by a slash, and then a netmask which represents how many IP addresses are contained within the netblock. This format is known as CIDR. You'll also sometimes see netblocks given as a start ip address, and an end ip address, or an ip address range.

Traffic works its way around the internet based on the routing table, which contains a list of networks and their associated netblocks.

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