149.20.66.0/24

AS27321 · Internet Systems Consortium, Inc.

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Summary

Country	United States
Domain	isc.org
ASN	AS27321
Registry	ARIN
ID	ISC-NET3

WHOIS Details

NetHandle:      NET-149-20-0-0-1
OrgID:          ISC-94-Z
Parent:         NET-149-0-0-0-0
NetName:        ISC-NET3
NetRange:       149.20.0.0 - 149.20.67.255
NetType:        allocation
Comment:        -----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----
RegDate:        1992-01-28
Updated:        2021-12-14
Source:         ARIN


OrgID:          ISC-94-Z
OrgName:        Internet Systems Consortium, Inc.
CanAllocate:    
Street:         PO Box 360
City:           Newmarket
State/Prov:     NH
Country:        US
PostalCode:     03857
RegDate:        2007-11-08
Updated:        2024-01-03
OrgAdminHandle: JSO127-ARIN
OrgTechHandle:  BELLI82-ARIN
OrgTechHandle:  ISCN-ARIN
OrgTechHandle:  JSO127-ARIN
OrgTechHandle:  RA15-ARIN
OrgAbuseHandle: ISCAT-ARIN
OrgNOCHandle:   ISCN-ARIN
Source:         ARIN


POCHandle:      RA15-ARIN
IsRole:         N
LastName:       Adams
FirstName:      Rick
Street:         2941 Fairview Park Drive, Suite 105
City:           Falls Church
State/Prov:     VA
Country:        US
PostalCode:     22042
RegDate:        1998-03-23
Updated:        2025-11-02
OfficePhone:    +1-703-255-5527
Mailbox:        rick@cello.net
Source:         ARIN


POCHandle:      ISCAT-ARIN
IsRole:         Y
LastName:       Internet Systems Consortium Abuse Team
FirstName:      
Street:         PO Box 360
City:           Newmarket
State/Prov:     NH
Country:        US
PostalCode:     03857
RegDate:        2003-05-15
Updated:        2025-09-01
OfficePhone:    +1-650-423-1300
Mailbox:        abuse@isc.org
Source:         ARIN


POCHandle:      ISCN-ARIN
IsRole:         Y
LastName:       Internet Systems Consortium NOC
FirstName:      
Street:         PO Box 360
City:           Newmarket
State/Prov:     NH
Country:        US
PostalCode:     03857
RegDate:        2003-05-15
Updated:        2025-11-23
OfficePhone:    +1-650-423-1310
Mailbox:        noc@isc.org
Source:         ARIN


POCHandle:      JSO127-ARIN
IsRole:         N
LastName:       Osborn
FirstName:      Jeffrey
Street:         60 Exeter Road, Suite 104
Street:         PO Box 360
City:           Newmarket
State/Prov:     NH
Country:        US
PostalCode:     03824
RegDate:        2018-04-16
Updated:        2026-04-15
OfficePhone:    +1-408-455-8258
OfficePhone:    +1-650-423-1300
Mailbox:        jeff@isc.org
Source:         ARIN


POCHandle:      BELLI82-ARIN
IsRole:         N
LastName:       Bellis
FirstName:      Ray
Street:         PO Box 360
City:           Newmarket
State/Prov:     NH
Country:        US
PostalCode:     03857
RegDate:        2019-11-11
Updated:        2026-01-26
OfficePhone:    +1-650-423-1300
Mailbox:        ray@isc.org
Source:         ARIN

Nearby Ranges

BGP prefixes that overlap with 149.20.0.0/16

Range	ASN	Company	Num of IPs
149.20.128.0/19	AS4193	Washington State Department of Children, Youth, and Families	8,192
149.20.208.0/20	AS53347	Premier Communications	4,096
149.20.176.0/21	AS395731	Metronet	2,048
149.20.232.0/21	AS16824	Harlan Municipal Utilities	2,048
149.20.248.0/21	AS18615	Mainstream Fiber Networks, LLC	2,048
149.20.168.0/21	AS54501	Sequachee Valley Electric Cooperative	2,048
149.20.176.0/21	AS63242	Metronet	2,048
149.20.104.0/22	AS8683	Nominet core DC2 IPv4 allocation 1	1,024
149.20.100.0/22	AS8683	Nominet core DC1 IPv4 allocation 2	1,024
149.20.108.0/22	AS8683	Nominet core DC2 IPv4 allocation 2	1,024
149.20.96.0/22	AS8683	Nominet core DC1 IPv4 allocation 1	1,024
149.20.68.0/23	AS393507	Gush I Systems	512
149.20.89.0/24	AS397620	City of Menlo Park	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

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
20.221.215.8	AS8075 Microsoft Corporation	`0.36ms` from Chicago, US
98.29.59.8	AS10796 Charter Communications Inc	`15.74ms` from Cleveland, US
31.52.43.248	AS2856 British Telecommunications PLC	`7.02ms` from Erith, GB
189.178.170.72	AS8151 UNINET	`6.18ms` from Guadalajara, MX
211.222.83.8	AS4766 Korea Telecom	`0.89ms` from Incheon, KR
14.50.19.136	AS4766 Korea Telecom	`5.83ms` from Incheon, KR
78.188.75.8	AS9121 Turk Telekomunikasyon Anonim Sirketi	`8.37ms` from Izmir, TR
84.66.239.120	AS5378 Vodafone Limited	`7.54ms` from London, GB
189.225.169.136	AS8151 UNINET	`5.41ms` from Mexico City, MX
75.214.222.88	AS6167 Verizon Business	`10.93ms` from New York City, US
92.170.30.152	AS3215 Orange S.A.	`2.40ms` from Paris, FR
20.120.250.184	AS8075 Microsoft Corporation	`0.40ms` from Quincy, US
34.199.218.8	AS14618 Amazon.com, Inc.	`0.17ms` from Reston, US
111.231.168.24	AS45090 Shenzhen Tencent Computer Systems Company Limited	`1.32ms` from Shanghai, CN
58.164.24.248	AS1221 Telstra Limited	`5.74ms` from Sydney, AU
92.54.39.24	AS8426 ClaraNET LTD	`0.41ms` from Barcelona, ES
101.16.255.152	AS4837 CHINA UNICOM China169 Backbone	`8.45ms` from Beijing, CN
71.71.146.56	AS11426 Charter Communications Inc	`7.97ms` from Charlotte, US
66.167.86.40	AS401783 TOKALA COMMUNICATIONS INC.	`1.98ms` from Jakarta, ID
72.199.201.152	AS22773 Cox Communications Inc.	`8.77ms` from Los Angeles, US
184.87.247.216	AS4775 Globe Telecoms	`0.59ms` from Manila, PH
91.122.3.8	AS12389 PJSC Rostelecom	`1.17ms` from Saint Petersburg, RU
118.39.21.56	AS4766 Korea Telecom	`7.10ms` from Seoul, KR
110.231.0.248	AS4837 CHINA UNICOM China169 Backbone	`10.54ms` from Tianjin, CN
125.197.39.248	AS2518 BIGLOBE Inc.	`2.32ms` from Tokyo, JP

Traceroute

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

traceroute -a -n -q1 -f4 -m7 149.20.66.138

traceroute to 149.20.66.138 (149.20.66.138): 7 hops max, 52 byte packets

4 [AS21928] 100.199.0.93 0.075 ms

5 *

6 *

7 *

Measurement taken from

IPinfo ProbeNet in Tieling, CN

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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