66.81.250.0/23

AS40627 · RingCentral Inc

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Summary

Country	United States
Domain	ringcentral.com
ASN	AS40627
Parent Range	66.81.240.0/20
Registry	ARIN
ID	RC-PRO-5

WHOIS Details

NetHandle:      NET-66-81-240-0-1
OrgID:          RINGC
Parent:         NET-66-0-0-0-0
NetName:        RC-PRO-5
NetRange:       66.81.240.0 - 66.81.255.255
NetType:        allocation
Comment:        -----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----
RegDate:        2020-06-29
Updated:        2024-03-06
Source:         ARIN


OrgID:          RINGC
OrgName:        RingCentral Inc
CanAllocate:    
Street:         20 Davis Drive
City:           Belmont
State/Prov:     CA
Country:        US
PostalCode:     94002
RegDate:        2008-02-12
Updated:        2024-11-25
OrgAdminHandle: OPERA151-ARIN
OrgTechHandle:  CHONG5-ARIN
OrgTechHandle:  OPERA151-ARIN
OrgAbuseHandle: OPERA151-ARIN
OrgNOCHandle:   OPERA151-ARIN
Source:         ARIN


POCHandle:      CHONG5-ARIN
IsRole:         N
LastName:       Chong
FirstName:      John
Street:         20 Davis Drive
City:           Belmont
State/Prov:     CA
Country:        US
PostalCode:     94002
RegDate:        2012-04-13
Updated:        2025-02-04
OfficePhone:    +1-650-264-7644
FaxPhone:       +1-650-264-7644
Mailbox:        john.chong@ringcentral.com
Source:         ARIN


POCHandle:      OPERA151-ARIN
IsRole:         Y
LastName:       Operations
FirstName:      
Street:         20 Davis Drive
City:           Belmont
State/Prov:     CA
Country:        US
PostalCode:     94002
RegDate:        2008-02-11
Updated:        2025-08-27
OfficePhone:    +1-650-472-4000
FaxPhone:       +1-650-472-4000
Mailbox:        hostmaster@ringcentral.com
Mailbox:        john.chong@ringcentral.com
Source:         ARIN

Overlapping Ranges

BGP prefixes that contain 66.81.250.0/23

Range	ASN	Company	Num of IPs
66.81.240.0/20	AS16509	RingCentral Inc	4,096
66.81.240.0/20	AS209242	RingCentral Inc	4,096
66.81.240.0/20	AS40627	RingCentral Inc	4,096
66.81.240.0/20	AS14618	RingCentral Inc	4,096

Nearby Ranges

BGP prefixes that overlap with 66.81.0.0/16

Range	ASN	Company	Num of IPs
66.81.240.0/20	AS14618	RingCentral Inc	4,096
66.81.240.0/20	AS40627	RingCentral Inc	4,096
66.81.240.0/20	AS209242	RingCentral Inc	4,096
66.81.240.0/20	AS16509	RingCentral Inc	4,096
66.81.112.0/21	AS63178	Mid-Plains Rural Telephone Cooperative, Inc.	2,048
66.81.144.0/21	AS207054	FlyNet.it	2,048
66.81.136.0/21	AS27022	Siyeh Corporation	2,048
66.81.208.0/22	AS14265	TPx Communications	1,024
66.81.38.0/23	AS14265	TPx Communications	512
66.81.12.0/23	AS14265	Calicom Internet Service	512
66.81.82.0/23	AS14265	TPx Communications	512
66.81.28.0/23	AS19864	HFA Specialty Assets LLC	512
66.81.30.0/23	AS14265	TPx Communications	512
66.81.48.0/23	AS11915	TPx Communications	512
66.81.227.0/24	AS16509	HFA Specialty Assets LLC	256
66.81.239.0/24	AS14265	DGweb Communications	256
66.81.81.0/24	AS14618	HFA Specialty Assets LLC	256
66.81.94.0/24	AS14265	Communications Advantage, LLC	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

Read more

Pingable IPs

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

IP Address	ASN	Details
66.81.251.130	AS40627 RingCentral Inc	`1.06ms` from San Jose, US
66.81.250.11	AS40627 RingCentral Inc	`0.41ms` from San Jose, 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
84.173.136.7	AS3320 Deutsche Telekom AG	`3.69ms` from Berlin, DE
220.166.203.231	AS4134 CHINANET BACKBONE	`1.60ms` from Chengdu, CN
173.17.102.103	AS30036 Mediacom Communications Corp	`19.55ms` from Chicago, US
107.219.133.151	AS7018 AT&T Enterprises, LLC	`11.35ms` from Chicago, US
79.230.59.247	AS3320 Deutsche Telekom AG	`5.07ms` from Frankfurt am Main, DE
185.254.185.231	AS9009 M247 Europe SRL	`0.25ms` from Frankfurt am Main, DE
119.8.22.71	AS136907 HUAWEI CLOUDS	`0.81ms` from Hong Kong, HK
92.89.47.87	AS15557 Societe Francaise Du Radiotelephone - SFR SA	`7.75ms` from Paris, FR
140.205.53.7	AS37963 Hangzhou Alibaba Advertising Co.,Ltd.	`2.35ms` from Shanghai, CN
128.136.203.183	AS13649 Flexential Colorado Corp.	`0.82ms` from Atlanta, US
137.238.88.7	AS26462 The State University of New York College at Geneseo	`2.63ms` from Buffalo, US
41.238.59.167	AS8452 TE-AS	`4.87ms` from Cairo, EG
51.186.199.39	AS5607 Sky UK Limited	`0.77ms` from Dublin, IE
193.238.72.7	AS196767 INMART.UA LLC	`8.97ms` from Krasnodar, RU
136.52.115.7	AS16591 Google Fiber Inc.	`1.63ms` from Los Angeles, US
66.254.180.215	AS22552 eSited Solutions	`0.14ms` from Los Angeles, US
73.242.125.215	AS7922 Comcast Cable Communications, LLC	`4.18ms` from Minneapolis, US
3.219.96.87	AS14618 Amazon.com, Inc.	`0.28ms` from Reston, US
112.187.137.199	AS4766 Korea Telecom	`1.45ms` from Seoul, KR
79.131.247.183	AS6799 Ote SA (Hellenic Telecommunications Organisation)	`5.68ms` from Athens, GR
109.132.239.215	AS5432 Proximus NV	`1.83ms` from Brussels, BE
151.177.75.7	AS1257 Tele2 Sverige AB	`1.14ms` from Goeteborg, SE
139.199.15.167	AS45090 Shenzhen Tencent Computer Systems Company Limited	`1.97ms` from Guangzhou, CN
51.198.17.199	AS5607 Sky UK Limited	`4.91ms` from London, GB
189.138.159.199	AS8151 UNINET	`2.44ms` from Mexico City, MX

Traceroute

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

traceroute -a -n -q1 66.81.251.162

traceroute to 66.81.251.162 (66.81.251.162): 64 hops max, 52 byte packets

1 [AS31898] 140.91.234.137 0.11 ms

2 [AS7922] 96.87.8.70 0.54 ms

3 *

4 [AS7922] 96.110.33.33 1.203 ms

5 [AS7922] 96.110.36.218 1.049 ms

6 *

7 [AS40627] 66.81.251.162 1.257 ms

Measurement taken from

IPinfo ProbeNet in San Jose, US

On April 13th 2026

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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