66.187.0.0/23

AS36321 · Castle Global Inc.

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Summary

Country	United States
Domain	castlefunders.com
ASN	AS36321
Registry	ARIN
ID	CSTL-EAST

WHOIS Details

NetHandle:      NET-66-187-0-0-1
OrgID:          CG-594
Parent:         NET-66-0-0-0-0
NetName:        CSTL-EAST
NetRange:       66.187.0.0 - 66.187.1.255
NetType:        allocation
RegDate:        2021-04-07
Updated:        2021-12-14
Source:         ARIN


OrgID:          CG-594
OrgName:        Castle Global Inc.
CanAllocate:    
Street:         100 1st Street, 11th Floor
City:           San Francisco
State/Prov:     CA
Country:        US
PostalCode:     94105
RegDate:        2017-09-14
Updated:        2025-03-19
OrgAdminHandle: NELSO673-ARIN
OrgTechHandle:  KARPM16-ARIN
OrgTechHandle:  NELSO673-ARIN
OrgAbuseHandle: NELSO673-ARIN
OrgNOCHandle:   NELSO673-ARIN
OrgRoutingHandle:   NELSO673-ARIN
OrgDNSHandle:   NELSO673-ARIN
Source:         ARIN


POCHandle:      KARPM16-ARIN
IsRole:         N
LastName:       Karpman
FirstName:      Dmitriy
Street:         100 1st Street, 11th Floor
City:           San Francisco
State/Prov:     CA
Country:        US
PostalCode:     94105
RegDate:        2025-03-19
Updated:        2025-03-19
OfficePhone:    +1-857-206-3524
Mailbox:        [email protected]
Source:         ARIN


POCHandle:      NELSO673-ARIN
IsRole:         N
LastName:       Nelson
FirstName:      Eric
Street:         100 1st Street, 11th Floor
City:           San Francisco
State/Prov:     CA
Country:        US
PostalCode:     94105
RegDate:        2017-09-13
Updated:        2025-03-17
OfficePhone:    +1-916-803-7841
Mailbox:        [email protected]
Source:         ARIN

Nearby Ranges

BGP prefixes that overlap with 66.187.0.0/16

Range	ASN	Company	Num of IPs
66.187.128.0/19	AS33327	Telecom Colocation, LLC	8,192
66.187.208.0/20	AS109	CISCO SYSTEMS, INC.	4,096
66.187.160.0/20	AS11402	Dasia.Net, LLC	4,096
66.187.32.0/20	AS14703	MARQUETTE-ADAMS TELEPHONE COOPERATIVE, INC.	4,096
66.187.64.0/20	AS40156	The Optimal Link Corporation	4,096
66.187.48.0/20	AS397360	Texas State Technical College Harlingen	4,096
66.187.96.0/20	AS396905	HomeWorks Connect	4,096
66.187.176.0/20	AS35985	One Ring Networks, Inc.	4,096
66.187.224.0/20	AS17314	Red Hat, Inc.	4,096
66.187.224.0/20	AS17314	Red Hat, Inc.	4,096
66.187.224.0/20	AS22360	Red Hat, Inc.	4,096
66.187.224.0/20	AS22360	Red Hat, Inc.	4,096
66.187.224.0/20	AS22753	Red Hat, Inc.	4,096
66.187.224.0/20	AS22753	Red Hat, Inc.	4,096
66.187.244.0/22	AS63452	Velocihost Inc.	1,024
66.187.200.0/22	AS22952	Chaparral CableVision	1,024
66.187.192.0/22	AS33185	Hive Data Center Inc.	1,024
66.187.28.0/22	AS55039	Fatbeam, LLC	1,024
66.187.248.0/22	AS5650	HostingYard LLC	1,024
66.187.24.0/22	AS63133	LENNO	1,024
66.187.12.0/23	AS16436	Az Airnet	512
66.187.2.0/24	AS395141	Primisys Computer Systems & Support, LLC	256
66.187.253.0/24	AS17176	Hosting Tornado LLC	256
66.187.252.0/24	AS17176	Hosting Tornado LLC	256
66.187.15.0/24	AS399064	Content Guru Inc	256
66.187.196.0/24	AS11059	MIFFLIN COUNTY WIRELESS LLC	256
66.187.197.0/24	AS33296	Piedmont Broadband Corporation	256
66.187.198.0/24	AS33296	Piedmont Broadband Corporation	256
66.187.152.0/24	AS33327	Outer Edge Technology, LLC	256
66.187.255.0/24	AS17176	Hosting Tornado LLC	256
66.187.254.0/24	AS17176	Hosting Tornado LLC	256

Hosted domains

There are no domains currently hosted on this ASN.

Hosted domains API

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Read more

Pingable IPs

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

IP Address	ASN	Details
66.187.0.131	AS36321 Castle Global Inc.	`0.31ms` from Ashburn, US
66.187.1.128	AS36321 Castle Global Inc.	`0.30ms` from Ashburn, 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
34.219.92.231	AS16509 Amazon.com, Inc.	`0.30ms` from Boardman, US
44.249.60.183	AS16509 Amazon.com, Inc.	`0.50ms` from Boardman, US
130.215.168.183	AS64011 Asia Pacific Network Information Centre	`5.81ms` from Boston, US
178.118.210.55	AS6848 Telenet BV	`8.75ms` from Brussels, BE
192.119.145.135	AS393892 Mid Century Communications	`7.76ms` from Chicago, US
125.21.247.23	AS9498 BHARTI Airtel Ltd.	`2.60ms` from Delhi, IN
216.117.137.71	AS10843 Advanced Internet Technologies	`0.13ms` from Fayetteville, US
5.158.2.231	AS12353 Vodafone Portugal	`2.92ms` from Lisbon, PT
117.140.125.199	AS9808 China Mobile Communications Group Co., Ltd.	`6.96ms` from Nanning, CN
218.220.158.55	AS9617 JCOM Co., Ltd.	`10.97ms` from Osaka, JP
193.51.25.87	AS2200 Renater	`1.75ms` from Paris, FR
125.233.115.183	AS3462 Data Communication Business Group	`3.00ms` from Taipei, TW
37.78.49.167	AS12389 PJSC Rostelecom	`14.28ms` from Tbilisi, GE
142.198.80.231	AS577 Bell Canada	`1.45ms` from Toronto, CA
98.252.36.55	AS7922 Comcast Cable Communications, LLC	`5.90ms` from Ashburn, US
190.173.206.7	AS22927 Telefonica de Argentina	`2.36ms` from Buenos Aires, AR
103.97.44.7	AS136808 One Bank Limited	`0.53ms` from Dhaka, BD
42.53.58.183	AS4837 CHINA UNICOM China169 Backbone	`5.35ms` from Liaoyang, CN
85.61.158.7	AS12479 Orange Espagne SA	`12.86ms` from Madrid, ES
121.79.4.7	AS4826 Vocus Connect International Backbone	`0.28ms` from Melbourne, AU
156.47.100.23	AS12042 Fidium	`5.13ms` from Minneapolis, US
88.89.53.231	AS2119 Telenor Norge AS	`4.33ms` from Oslo, NO
100.31.71.119	AS14618 Amazon.com, Inc.	`0.63ms` from Reston, US
54.87.196.39	AS14618 Amazon.com, Inc.	`0.20ms` from Reston, US
88.201.210.7	AS35807 SkyNet Ltd.	`0.58ms` from Saint Petersburg, 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 66.187.0.4

traceroute to 66.187.0.4 (66.187.0.4): 64 hops max, 52 byte packets

2 [AS917] 199.119.65.3 0.221 ms

3 *

4 [] 84.17.33.32 0.308 ms

5 *

6 [AS174] 154.54.87.34 1.676 ms

7 [AS36321] 66.187.0.4 0.432 ms

Measurement taken from

IPinfo ProbeNet in Ashburn, US

On December 14th 2025

What are IP address ranges?

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