199.221.128.0/21

AS3364 · Computer Systems Design Company

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Summary

Country	United States
Domain	csdco.com
ASN	AS3364
Registry	ARIN
ID	CSDC-ANS

WHOIS Details

NetHandle:      NET-199-221-128-0-1
OrgID:          CSD-3
Parent:         NET-199-219-0-0-1
NetName:        CSDC-ANS
NetRange:       199.221.128.0 - 199.221.135.255
NetType:        reassignment
RegDate:        1998-07-01
Updated:        1998-07-01
TechHandle:     JN24-ARIN
Source:         ARIN


OrgID:          CSD-3
OrgName:        Computer Systems Design Company
CanAllocate:    
Street:         735 Highland Avenue
City:           Boulder
State/Prov:     CO
Country:        US
PostalCode:     80302
RegDate:        1993-12-30
Updated:        2024-06-17
OrgAdminHandle: JN20-ARIN
OrgTechHandle:  JN24-ARIN
OrgAbuseHandle: JN24-ARIN
Source:         ARIN


POCHandle:      JN20-ARIN
IsRole:         N
LastName:       Nebel
FirstName:      John
Street:         735 Highland Avenue
City:           Boulder
State/Prov:     CO
Country:        US
PostalCode:     80302
RegDate:        1993-12-30
Updated:        2025-08-20
OfficePhone:    +1-303-447-8025
MobilePhone:    +1-303-618-7345
Mailbox:        domains@csdco.com
Mailbox:        john.nebel@csd.net
Source:         ARIN


POCHandle:      JN24-ARIN
IsRole:         N
LastName:       Nebel
FirstName:      John
Street:         Computer Systems Design Company
Street:         735 Highland Ave
City:           Boulder
State/Prov:     CO
Country:        US
PostalCode:     80302
RegDate:        1993-12-30
Updated:        2025-08-20
OfficePhone:    +1-303-447-8025
MobilePhone:    +1-303-618-7345
Mailbox:        domains@csdco.com
Mailbox:        john.nebel@csd.net
Source:         ARIN

Hosted domains

There are no domains currently hosted on this ASN.

Hosted domains API

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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
130.202.101.21	AS683 Argonne National Laboratory	`1.64ms` from Chicago, US
45.149.205.165	AS51167 Contabo GmbH	`1.99ms` from Frankfurt am Main, DE
20.91.211.117	AS8075 Microsoft Corporation	`0.18ms` from Gaevle, SE
114.5.202.213	AS4761 INDOSAT Internet Network Provider	`9.11ms` from Jakarta, ID
137.103.208.181	AS11776 Breezeline	`2.47ms` from Miami, US
115.207.103.69	AS4134 CHINANET-BACKBONE	`8.68ms` from Ningbo, CN
114.18.195.37	AS2516 KDDI CORPORATION	`14.59ms` from Osaka, JP
182.169.208.85	AS2527 Sony Network Communications Inc.	`2.33ms` from Osaka, JP
80.203.121.165	AS29695 Altibox AS	`1.92ms` from Oslo, NO
105.105.12.197	AS36947 Telecom Algeria	`14.51ms` from Palermo, IT
18.204.128.229	AS14618 Amazon.com, Inc.	`0.20ms` from Reston, US
34.234.44.197	AS14618 Amazon.com, Inc.	`0.18ms` from Reston, US
81.222.112.69	AS3216 PJSC Vimpelcom	`0.17ms` from Samara, RU
112.158.36.133	AS17858 LG POWERCOMM	`2.54ms` from Seoul, KR
210.101.69.69	AS4766 Korea Telecom	`1.51ms` from Seoul, KR
222.222.44.21	AS4134 CHINANET-BACKBONE	`1.22ms` from Shijiazhuang, CN
112.140.191.101	AS131215 sancharonline.net	`5.58ms` from Ahmedabad, IN
77.160.159.133	AS1136 KPN B.V.	`1.37ms` from Amsterdam, NL
132.220.202.85	AS8075 Microsoft Corporation	`0.21ms` from Amsterdam, NL
111.204.124.165	AS4808 China Unicom Beijing Province Network	`3.17ms` from Beijing, CN
60.195.194.85	AS4808 China Unicom Beijing Province Network	`5.28ms` from Beijing, CN
60.28.16.165	AS4837 CHINA UNICOM China169 Backbone	`5.08ms` from Beijing, CN
77.111.242.149	AS51468 One.com A/S	`0.55ms` from Copenhagen, DK
121.198.245.245	AS37963 Hangzhou Alibaba Advertising Co.,Ltd.	`7.46ms` from Hangzhou, CN
171.249.233.181	AS7552 Viettel Group	`1.03ms` from Ho Chi Minh City, VN

Traceroute

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

traceroute -a -n -q1 -f5 -m10 199.221.133.221

traceroute to 199.221.133.221 (199.221.133.221): 10 hops max, 52 byte packets

5 [AS3356] 4.16.52.81 0.784 ms

6 *

7 [AS3356] 63.211.255.222 34.888 ms

8 *

9 *

10 *

Measurement taken from

IPinfo ProbeNet in Toronto, CA

On September 11th 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.

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