121.91.144.0/21

AS16509 · Amazon.com, Inc.

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Summary

Country	United States
Domain	amazon.com
ASN	AS16509
Registry	ARIN
ID	AMAZO-4

WHOIS Details

NetHandle:      NET-121-91-144-0-1
OrgID:          AMAZO-4
Parent:         NET-121-0-0-0-1
NetName:        AMAZO-4
NetRange:       121.91.144.0 - 121.91.151.255
NetType:        allocation
RegDate:        2025-01-13
Updated:        2025-01-13
Source:         ARIN


OrgID:          AMAZO-4
OrgName:        Amazon.com, Inc.
CanAllocate:    
Street:         Amazon Web Services, Inc.
Street:         P.O. Box 81226
City:           Seattle
State/Prov:     WA
Country:        US
PostalCode:     98108-1226
Comment:        For details of this service please see
Comment:        http://ec2.amazonaws.com
RegDate:        2005-09-29
Updated:        2022-09-30
OrgAdminHandle: IPMAN40-ARIN
OrgTechHandle:  ANO24-ARIN
OrgAbuseHandle: AEA8-ARIN
OrgNOCHandle:   AANO1-ARIN
OrgRoutingHandle:   ARMP-ARIN
OrgRoutingHandle:   IPROU3-ARIN
Source:         ARIN


POCHandle:      ANO24-ARIN
IsRole:         Y
LastName:       Amazon EC2 Network Operations
FirstName:      
Street:         PO BOX 81226
City:           Seattle
State/Prov:     WA
Country:        US
PostalCode:     98108-1226
RegDate:        2005-09-19
Updated:        2025-08-28
OfficePhone:    +1-206-555-0000
Mailbox:        [email protected]
Source:         ARIN


POCHandle:      AEA8-ARIN
IsRole:         Y
LastName:       Amazon EC2 Abuse
FirstName:      
Street:         Amazon Web Services Elastic Compute Cloud, EC2
Street:         410 Terry Avenue North
City:           Seattle
State/Prov:     WA
Country:        US
PostalCode:     98109-5210
RegDate:        2008-03-24
Updated:        2025-08-28
OfficePhone:    +1-206-555-0000
Mailbox:        [email protected]
Source:         ARIN


POCHandle:      IPMAN40-ARIN
IsRole:         Y
LastName:       IP Management
FirstName:      
Street:         1918 8th Ave
City:           Seattle
State/Prov:     WA
Country:        US
PostalCode:     98109
RegDate:        2013-11-12
Updated:        2025-03-24
OfficePhone:    +1-703-464-1336
Mailbox:        [email protected]
Source:         ARIN


POCHandle:      AANO1-ARIN
IsRole:         Y
LastName:       Amazon AWS Network Operations
FirstName:      
Street:         410 Terry Ave N
City:           Seattle
State/Prov:     WA
Country:        US
PostalCode:     98109
RegDate:        2010-03-04
Updated:        2025-08-28
OfficePhone:    +1-206-555-0000
Mailbox:        [email protected]
Source:         ARIN

Nearby Ranges

BGP prefixes that overlap with 121.91.0.0/16

Range	ASN	Company	Num of IPs
121.91.64.0/20	AS14374	Agri-Valley Services Corporation	4,096
121.91.176.0/20	AS133499	cleardocks LLC	4,096
121.91.16.0/20	AS16509	Amazon.com, Inc.	4,096
121.91.200.0/21	AS136907	HUAWEI INTERNATIONAL PTE. LTD.	2,048
121.91.104.0/21	AS146842	China Datacom Corporation Limited	2,048
121.91.160.0/21	AS16509	Amazon.com, Inc.	2,048
121.91.152.0/21	AS136907	HUAWEI INTERNATIONAL PTE. LTD.	2,048
121.91.168.0/21	AS136907	HUAWEI INTERNATIONAL PTE. LTD.	2,048
121.91.96.0/23	AS9723	iseek Communications	512
121.91.104.0/23	AS146842	CDC SAP CCEE AP CN 1 SHA	512
121.91.106.0/23	AS146842	CDC SAP CCEE AP CN 1A SHA3	512
121.91.108.0/23	AS146842	CDC SAP CCEE AP CN 1B SHA4	512
121.91.110.0/23	AS146842	CDC SAP CCEE AP CN 1 SHA	512
121.91.57.0/24	AS138423	CMPak Public IPs	256
121.91.56.0/24	AS138423	CMPak Public IPs	256
121.91.42.0/24	AS59257	CMPak Public IPs	256
121.91.43.0/24	AS59257	CMPak Public IPs	256
121.91.199.0/24	AS9723	iseek Communications	256
121.91.200.0/24	AS136907	Huawei Cloud Thailand POP	256
121.91.205.0/24	AS136907	Huawei Cloud Thailand POP	256
121.91.204.0/24	AS136907	Huawei Cloud Thailand POP	256
121.91.201.0/24	AS136907	Huawei Cloud Thailand POP	256
121.91.32.0/24	AS59257	CMPak Public IPs	256
121.91.33.0/24	AS59257	CMPak Public IPs	256
121.91.34.0/24	AS59257	CMPak Public IPs	256
121.91.35.0/24	AS59257	CMPak Public IPs	256
121.91.36.0/24	AS59257	CMPak Public IPs	256
121.91.37.0/24	AS59257	CMPak Public IPs	256
121.91.38.0/24	AS59257	CMPak Public IPs	256
121.91.39.0/24	AS59257	CMPak Public IPs	256
121.91.40.0/24	AS59257	CMPak Public IPs	256
121.91.41.0/24	AS59257	CMPak Public IPs	256
121.91.60.0/24	AS138423	CMPak Public IPs	256
121.91.61.0/24	AS138423	CMPak Public IPs	256
121.91.62.0/24	AS138423	CMPak Public IPs	256
121.91.63.0/24	AS138423	CMPak Public IPs	256

Hosted domains

There are no domains currently hosted on this ASN.

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

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Pingable IPs

No IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

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
109.123.102.213	AS13213 UK-2 Limited	`0.21ms` from Amsterdam, NL
212.23.221.101	AS204601 Zomro B.V.	`0.53ms` from Amsterdam, NL
44.217.97.149	AS14618 Amazon.com, Inc.	`0.55ms` from Ashburn, US
20.62.141.149	AS8075 Microsoft Corporation	`0.41ms` from Ashburn, US
14.194.73.101	AS45820 Tata Teleservices ISP AS	`1.14ms` from Bengaluru, IN
96.127.109.85	AS8987 Amazon Data Services Ireland Ltd	`0.33ms` from Boardman, US
81.237.184.165	AS3301 Telia Company AB	`3.27ms` from Copenhagen, DK
201.48.29.229	AS16735 ALGAR TELECOM S/A	`0.40ms` from Curitiba, BR
103.197.77.245	AS151109 LUCID IT SERVICES	`1.14ms` from Delhi, IN
87.40.135.5	AS1213 ASIERA TECHNOLOGY SERVICES CLG	`12.68ms` from Dublin, IE
52.215.149.181	AS16509 Amazon.com, Inc.	`0.25ms` from Dublin, IE
222.168.124.53	AS4134 CHINANET-BACKBONE	`19.02ms` from Liaoyang, CN
145.221.211.5	AS15625 ING Bank N.V.	`8.97ms` from London, GB
90.250.40.117	AS5378 Vodafone Limited	`5.10ms` from London, GB
2.33.104.53	AS30722 Vodafone Italia S.p.A.	`14.73ms` from Milan, IT
15.222.64.181	AS16509 Amazon.com, Inc.	`0.16ms` from Montreal, CA
168.235.80.69	AS3842 InMotion Hosting, Inc.	`1.11ms` from New York City, US
177.141.101.133	AS28573 Claro NXT Telecomunicacoes Ltda	`5.73ms` from Osasco, BR
68.110.172.117	AS22773 Cox Communications Inc.	`1.19ms` from Phoenix, US
188.234.6.229	AS41668 JSC "ER-Telecom Holding"	`8.38ms` from Samara, RU
47.123.209.213	AS37963 Hangzhou Alibaba Advertising Co.,Ltd.	`2.70ms` from Shanghai, CN
3.1.64.229	AS16509 Amazon.com, Inc.	`0.39ms` from Singapore, SG
185.207.167.133	AS208959 SlashN Services Pte. Ltd.	`0.43ms` from Singapore, SG
106.174.22.5	AS2516 KDDI CORPORATION	`18.19ms` from Tokyo, JP
20.44.179.69	AS8075 Microsoft Corporation	`0.16ms` from Tokyo, JP

Traceroute

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

traceroute -a -n -q1 -f4 -m9 121.91.147.90

traceroute to 121.91.147.90 (121.91.147.90): 9 hops max, 52 byte packets

4 [AS4134] 218.30.49.197 30.894 ms

5 *

6 [AS1299] 80.239.132.157 15.522 ms

7 *

8 *

9 *

Measurement taken from

IPinfo ProbeNet in Los Angeles, US

On December 28th 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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