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:        amzn-noc-contact@amazon.com
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:        amzn-noc-contact@amazon.com
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:        ipmanagement@amazon.com
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:        trustandsafety@support.aws.com
Source:         ARIN

Nearby Ranges

BGP prefixes that overlap with 121.91.0.0/16

Range	ASN	Company	Num of IPs
121.91.16.0/20	AS16509	Amazon.com, Inc.	4,096
121.91.176.0/20	AS133499	cleardocks LLC	4,096
121.91.64.0/20	AS14374	Agri-Valley Services Corporation	4,096
121.91.200.0/21	AS136907	HUAWEI INTERNATIONAL PTE. LTD.	2,048
121.91.168.0/21	AS136907	HUAWEI INTERNATIONAL PTE. LTD.	2,048
121.91.152.0/21	AS136907	HUAWEI INTERNATIONAL PTE. LTD.	2,048
121.91.160.0/21	AS16509	Amazon.com, Inc.	2,048
121.91.104.0/21	AS146842	China Datacom Corporation Limited	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
121.91.201.0/24	AS136907	Huawei Cloud Thailand POP	256
121.91.204.0/24	AS136907	Huawei Cloud Thailand POP	256
121.91.205.0/24	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
121.91.42.0/24	AS59257	CMPak Public IPs	256
121.91.43.0/24	AS59257	CMPak Public IPs	256
121.91.56.0/24	AS138423	CMPak Public IPs	256
121.91.57.0/24	AS138423	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
121.91.200.0/24	AS136907	Huawei Cloud Thailand POP	256
121.91.199.0/24	AS9723	iseek Communications	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
68.62.155.197	AS7922 Comcast Cable Communications, LLC	`16.16ms` from Atlanta, US
178.238.46.5	AS24971 MasterDC s.r.o.	`0.17ms` from Brno, CZ
206.221.93.37	AS264797 Cablenet S.A.	`8.46ms` from Buenos Aires, AR
103.191.90.133	AS141312 Aspirare Technologies Private Limited	`0.59ms` from Chennai, IN
69.241.84.213	AS7922 Comcast Cable Communications, LLC	`11.30ms` from Dallas, US
113.169.128.37	AS45899 VNPT Corp	`4.32ms` from Ho Chi Minh City, VN
109.145.134.229	AS2856 British Telecommunications PLC	`2.49ms` from London, GB
83.47.135.117	AS3352 TELEFONICA DE ESPANA S.A.U.	`8.83ms` from Madrid, ES
72.52.24.229	AS32787 Akamai Technologies, Inc.	`0.58ms` from Miami, US
202.127.12.21	AS9929 CHINA UNICOM Industrial Internet Backbone	`6.76ms` from Nanjing, CN
126.214.116.181	AS17676 SoftBank Corp.	`4.23ms` from Osaka, JP
126.140.76.85	AS17676 SoftBank Corp.	`3.59ms` from Osaka, JP
180.196.38.133	AS18126 Chubu Telecommunications Company, Inc.	`8.58ms` from Osaka, JP
40.104.75.213	AS8075 Microsoft Corporation	`0.36ms` from Osaka, JP
162.223.79.53	AS14265 TPx Communications	`1.33ms` from San Jose, US
201.137.19.85	AS8151 UNINET	`3.72ms` from Santiago de Queretaro, MX
203.255.28.101	AS18028 GyeongSang National University	`8.32ms` from Seoul, KR
121.177.81.53	AS4766 Korea Telecom	`7.08ms` from Seoul, KR
190.226.123.133	AS7303 Telecom Argentina S.A.	`5.42ms` from Asuncion, PY
96.97.172.37	AS7922 Comcast Cable Communications, LLC	`5.94ms` from Atlanta, US
200.47.118.197	AS27961 Jefatura de Gabinete de Ministros	`1.18ms` from Buenos Aires, AR
156.218.43.245	AS8452 TE-AS	`6.55ms` from Cairo, EG
168.183.32.229	AS10879 Unitedhealthcare	`5.55ms` from Des Moines, US
93.209.61.69	AS3320 Deutsche Telekom AG	`5.79ms` from Frankfurt am Main, DE
93.255.4.5	AS3320 Deutsche Telekom AG	`16.70ms` from Frankfurt am Main, DE

Traceroute

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

traceroute -a -n -q1 -f2 -m6 121.91.148.105

traceroute to 121.91.148.105 (121.91.148.105): 6 hops max, 52 byte packets

2 [AS9009] 193.27.15.64 1.002 ms

3 [AS2914] 157.238.227.152 0.727 ms

4 *

5 *

6 *

Measurement taken from

IPinfo ProbeNet in Singapore, SG

On September 18th 2025

What are IP address ranges?

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