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:      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:        eric@thehive.ai
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:        dmitriy@thehive.ai
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
66.187.176.0/20	AS35985	One Ring Networks, Inc.	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
66.187.224.0/20	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
66.187.208.0/20	AS109	CISCO SYSTEMS, INC.	4,096
66.187.160.0/20	AS11402	Dasia.Net, LLC	4,096
66.187.96.0/20	AS396905	HomeWorks Connect	4,096
66.187.48.0/20	AS397360	Texas State Technical College Harlingen	4,096
66.187.24.0/22	AS63133	LENNO	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
66.187.12.0/23	AS16436	Az Airnet	512
66.187.198.0/24	AS33296	Piedmont Broadband Corporation	256
66.187.197.0/24	AS33296	Piedmont Broadband Corporation	256
66.187.15.0/24	AS399064	Content Guru Inc	256
66.187.196.0/24	AS11059	MIFFLIN COUNTY WIRELESS LLC	256
66.187.152.0/24	AS33327	Outer Edge Technology, LLC	256
66.187.2.0/24	AS395141	Primisys Computer Systems & Support, LLC	256

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

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

IP Address	ASN	Details
66.187.1.129	AS36321 Castle Global Inc.	`0.31ms` from Ashburn, US
66.187.0.132	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
97.85.82.7	AS20115 Charter Communications LLC	`11.86ms` from Chicago, US
68.203.27.103	AS11427 Charter Communications Inc	`11.68ms` from Dallas, US
65.68.62.151	AS7018 AT&T Enterprises, LLC	`0.97ms` from Dallas, US
86.115.212.23	AS1759 Telia Finland Oyj	`1.09ms` from Helsinki, FI
58.177.51.55	AS9269 Hong Kong Broadband Network Ltd.	`1.40ms` from Hong Kong, HK
176.224.161.215	AS35819 Etihad Etisalat, a joint stock company	`2.14ms` from Jeddah, SA
5.158.2.231	AS12353 Vodafone Portugal	`2.78ms` from Lisbon, PT
104.83.45.39	AS16625 Akamai Technologies, Inc.	`0.10ms` from Madrid, ES
146.158.90.247	AS31133 PJSC MegaFon	`17.27ms` from Moscow, RU
176.178.140.247	AS5410 Bouygues Telecom SA	`19.52ms` from Paris, FR
60.208.27.151	AS4837 CHINA UNICOM China169 Backbone	`5.89ms` from Qingdao, CN
187.94.123.247	AS28658 Gigalink de Nova Friburgo Soluções em Rede Multimi	`4.16ms` from Rio de Janeiro, BR
104.114.195.23	AS25019 Saudi Telecom Company JSC	`0.31ms` from Riyadh, SA
128.2.104.167	AS9 Carnegie Mellon University	`6.08ms` from Ashburn, US
110.244.66.71	AS4837 CHINA UNICOM China169 Backbone	`8.65ms` from Beijing, CN
54.245.177.215	AS16509 Amazon.com, Inc.	`0.19ms` from Boardman, US
108.79.253.71	AS7018 AT&T Enterprises, LLC	`3.80ms` from Chicago, US
94.166.16.135	AS1267 WIND TRE S.P.A.	`18.77ms` from Frosinone, IT
191.221.77.87	AS8167 V tal	`2.42ms` from Novo Hamburgo, BR
176.180.19.151	AS5410 Bouygues Telecom SA	`5.92ms` from Paris, FR
104.19.61.247	AS13335 Cloudflare, Inc.	`0.10ms` from Porto Alegre, BR
27.209.154.231	AS4837 CHINA UNICOM China169 Backbone	`6.52ms` from Qingdao, CN
100.24.144.183	AS14618 Amazon.com, Inc.	`0.21ms` from Reston, US
191.232.34.199	AS8075 Microsoft Corporation	`0.18ms` from Sao Paulo, BR
61.78.232.135	AS4766 Korea Telecom	`7.97ms` from Seoul, KR

Traceroute

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

traceroute -a -n -q1 -f2 66.187.1.128

traceroute to 66.187.1.128 (66.187.1.128): 64 hops max, 52 byte packets

2 [AS917] 199.119.65.2 0.124 ms

3 *

4 [] 84.17.33.30 0.152 ms

5 *

6 [AS174] 154.54.87.34 1.205 ms

7 [AS174] 38.142.7.122 0.434 ms

8 [AS36321] 66.187.1.128 0.32 ms

Measurement taken from

IPinfo ProbeNet in Ashburn, US

On November 14th 2025

What are IP address ranges?

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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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