128.57.208.0/21

AS33631 · Palo Alto Research Center Incorporated

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Summary

Country	United States
Domain	sri.com
ASN	AS33631
Registry	ARIN
ID	DEMO-PR-2

WHOIS Details

NetHandle:      NET-128-57-0-0-1
OrgID:          SRIINT-Z
Parent:         NET-128-0-0-0-0
NetName:        DEMO-PR-2
NetRange:       128.57.0.0 - 128.57.255.255
NetType:        allocation
RegDate:        1984-11-09
Updated:        2025-04-09
TechHandle:     MAMF-ARIN
Source:         ARIN


OrgID:          SRIINT-Z
OrgName:        SRI International
CanAllocate:    
Street:         333 Ravenswood Avenue
City:           Menlo Park
State/Prov:     CA
Country:        US
PostalCode:     94025
RegDate:        2023-10-30
Updated:        2025-04-21
OrgAdminHandle: HWB1-ARIN
OrgTechHandle:  HWB1-ARIN
OrgTechHandle:  MAMF-ARIN
OrgTechHandle:  TOMAS90-ARIN
OrgAbuseHandle: HWB1-ARIN
OrgAbuseHandle: MAMF-ARIN
OrgAbuseHandle: TOMAS90-ARIN
OrgRoutingHandle:   HWB1-ARIN
OrgRoutingHandle:   MAMF-ARIN
OrgRoutingHandle:   TOMAS90-ARIN
OrgDNSHandle:   HWB1-ARIN
OrgDNSHandle:   MAMF-ARIN
OrgDNSHandle:   TOMAS90-ARIN
Source:         ARIN


POCHandle:      TOMAS90-ARIN
IsRole:         N
LastName:       Tomasetti
FirstName:      John
Street:         333 Ravenswood Ave.
City:           Menlo Park
State/Prov:     CA
Country:        US
PostalCode:     94025
RegDate:        2025-04-10
Updated:        2025-04-10
OfficePhone:    +1-650-859-6166
Mailbox:        john.tomasetti@sri.com
Source:         ARIN


POCHandle:      MAMF-ARIN
IsRole:         N
LastName:       Favis
FirstName:      Mark Anthony 
Street:         333 Ravenswood Ave
City:           Menlo Park
State/Prov:     CA
Country:        US
PostalCode:     94025
RegDate:        2025-04-08
Updated:        2025-04-08
OfficePhone:    +1-650-859-6499
Mailbox:        mark.favis@sri.com
Source:         ARIN


POCHandle:      HWB1-ARIN
IsRole:         N
LastName:       Barker
FirstName:      Harold
Street:         333 Ravenswood Ave.
City:           Menlo Park
State/Prov:     CA
Country:        US
PostalCode:     94025-3493
RegDate:        2011-02-02
Updated:        2024-12-09
OfficePhone:    +1-650-859-2622
MobilePhone:    +1-650-444-3730
Mailbox:        harold.barker@sri.com
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

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

IP Address	ASN	Details
128.57.208.5	AS33631 Palo Alto Research Center Incorporated	`0.97ms` from Fremont, US

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
213.139.62.85	AS8697 Jordan Telecommunications PSC	`0.79ms` from Amman, JO
217.170.21.101	AS35470 Signet B.V.	`0.69ms` from Amsterdam, NL
73.171.35.85	AS7922 Comcast Cable Communications, LLC	`5.19ms` from Ashburn, US
20.202.194.213	AS8075 Microsoft Corporation	`0.66ms` from Boydton, US
84.0.24.181	AS5483 Magyar Telekom Plc.	`0.99ms` from Budapest, HU
73.9.62.5	AS7922 Comcast Cable Communications, LLC	`6.80ms` from Chicago, US
173.195.96.5	AS17378 TierPoint, LLC	`9.19ms` from Dallas, US
216.189.146.133	AS7489 HostUS	`0.12ms` from Dallas, US
65.38.129.37	AS10835 Visionary Communications LLC	`0.50ms` from Denver, US
71.228.109.21	AS7922 Comcast Cable Communications, LLC	`11.80ms` from Denver, US
89.222.83.5	AS6762 TELECOM ITALIA SPARKLE S.p.A.	`0.73ms` from Frankfurt am Main, DE
189.243.52.85	AS8151 UNINET	`10.82ms` from Guadalajara, MX
178.15.97.149	AS3209 Vodafone GmbH	`5.23ms` from Hamburg, DE
139.214.213.213	AS4837 CHINA UNICOM China169 Backbone	`14.47ms` from Liaoyang, CN
90.170.163.181	AS12479 Orange Espagne SA	`9.05ms` from Madrid, ES
177.71.164.197	AS16509 Amazon.com, Inc.	`0.14ms` from Osasco, BR
213.184.222.5	AS15765 Tafjord Connect AS	`13.46ms` from Oslo, NO
119.163.44.133	AS4837 CHINA UNICOM China169 Backbone	`6.08ms` from Qingdao, CN
3.211.10.165	AS14618 Amazon.com, Inc.	`0.15ms` from Reston, US
14.58.235.197	AS4766 Korea Telecom	`5.68ms` from Seoul, KR
148.164.142.245	AS23154 Sanmina-SCI Corporation	`1.14ms` from Singapore, SG
84.216.41.53	AS2119 Telenor Norge AS	`0.68ms` from Stockholm, SE
219.96.41.213	AS10010 TOKAI Communications Corporation	`6.16ms` from Tokyo, JP
180.20.128.101	AS4713 NTT Communications Corporation	`2.63ms` from Tokyo, JP
169.55.189.101	AS36351 IBM Cloud	`0.81ms` from Toronto, CA

Traceroute

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

traceroute -a -n -q1 -m4 128.57.209.189

traceroute to 128.57.209.189 (128.57.209.189): 4 hops max, 52 byte packets

1 [AS136258] 45.154.205.2 1.035 ms

2 *

3 *

4 *

Measurement taken from

IPinfo ProbeNet in London, GB

On August 22nd 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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