18.3.21.0/24

AS3 · Massachusetts Institute of Technology

Need more data or want to access it via API or data downloads? Sign up to get free access

Summary

Country	United States
Domain	mit.edu
ASN	AS3
Registry	ARIN
ID	MIT

WHOIS Details

NetHandle:      NET-18-0-0-0-1
OrgID:          MIT-2
Parent:         NET-18-0-0-0-0
NetName:        MIT
NetRange:       18.0.0.0 - 18.31.255.255
NetType:        allocation
RegDate:        1994-01-01
Updated:        2025-12-02
AbuseHandle:    MNS18-ARIN
NOCHandle:      MNO78-ARIN
Source:         ARIN


OrgID:          MIT-2
OrgName:        Massachusetts Institute of Technology
CanAllocate:    
Street:         Room W92-167
Street:         77 Massachusetts Avenue
City:           Cambridge
State/Prov:     MA
Country:        US
PostalCode:     02139-4307
RegDate:        1970-01-01
Updated:        2024-11-25
OrgAdminHandle: MNO78-ARIN
OrgTechHandle:  BROWN2958-ARIN
OrgTechHandle:  GOMES41-ARIN
OrgAbuseHandle: MNS18-ARIN
OrgNOCHandle:   MNO78-ARIN
OrgRoutingHandle:   MNO78-ARIN
OrgDNSHandle:   MNO78-ARIN
Source:         ARIN


POCHandle:      MNO78-ARIN
IsRole:         Y
LastName:       MIT Network Operations
FirstName:      
Street:         304 Vassar Street
Street:         W92-167
City:           Cambridge
State/Prov:     MA
Country:        US
PostalCode:     02139
RegDate:        2010-09-10
Updated:        2025-12-02
OfficePhone:    +1-617-253-8400
Mailbox:        [email protected]
Source:         ARIN


POCHandle:      BROWN2958-ARIN
IsRole:         N
LastName:       Brown
FirstName:      Olu
Street:         77 Massachusetts Ave
City:           Cambridge
State/Prov:     MA
Country:        US
PostalCode:     02139
RegDate:        2024-11-15
Updated:        2024-11-15
OfficePhone:    +1-617-258-7870
Mailbox:        [email protected]
Source:         ARIN


POCHandle:      GOMES41-ARIN
IsRole:         N
LastName:       Gomes
FirstName:      Marco
Street:         77 Massachusetts Ave
City:           Cambridge
State/Prov:     MA
Country:        US
PostalCode:     02139
RegDate:        2024-11-15
Updated:        2025-11-17
OfficePhone:    +1-617-253-0336
Mailbox:        [email protected]
Source:         ARIN


POCHandle:      MNS18-ARIN
IsRole:         Y
LastName:       MIT Network Security
FirstName:      
Street:         304 Vassar Street
Street:         W92-167
City:           Cambridge
State/Prov:     MA
Country:        US
PostalCode:     02139
RegDate:        2010-09-10
Updated:        2025-01-08
OfficePhone:    +1-617-324-1782
Mailbox:        [email protected]
Source:         ARIN

Nearby Ranges

BGP prefixes that overlap with 18.3.0.0/16

No nearby ranges found.

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

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

IP Address	ASN	Details
18.3.21.6	AS3 Massachusetts Institute of Technology	`0.82ms` 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
166.88.104.248	AS7029 Windstream Communications LLC	`0.54ms` from Ashburn, US
1.2.131.72	AS23969 TOT Public Company Limited	`6.10ms` from Bangkok, TH
110.252.51.8	AS4837 CHINA UNICOM China169 Backbone	`8.13ms` from Beijing, CN
85.105.223.168	AS9121 Turk Telekomunikasyon Anonim Sirketi	`1.51ms` from Bursa, TR
104.192.150.120	AS11904 AcenTek	`11.54ms` from Chicago, US
37.136.203.40	AS16086 DNA Oyj	`8.90ms` from Helsinki, FI
97.145.192.72	AS6167 Verizon Business	`14.36ms` from Philadelphia, US
190.61.90.120	AS52468 UFINET PANAMA S.A.	`5.72ms` from San Miguel, SV
167.103.64.232	AS53813 ZSCALER, INC.	`0.54ms` from Singapore, SG
37.157.100.152	AS3249 Telia Eesti AS	`6.56ms` from Tallinn, EE
20.203.53.200	AS8075 Microsoft Corporation	`1.27ms` from Dubai, AE
27.74.146.24	AS7552 Viettel Group	`3.79ms` from Ho Chi Minh City, VN
42.87.106.56	AS4837 CHINA UNICOM China169 Backbone	`6.24ms` from Liaoyang, CN
217.30.116.248	AS12703 Pulsant (Scotland) Ltd	`8.30ms` from Manchester, GB
18.160.180.168	AS16509 Amazon.com, Inc.	`0.13ms` from Minneapolis, US
152.249.182.8	AS27699 TELEFÔNICA BRASIL S.A	`2.81ms` from Osasco, BR
78.119.118.56	AS15557 Societe Francaise Du Radiotelephone - SFR SA	`14.77ms` from Paris, FR
46.217.229.24	AS6821 Makedonski Telekom AD-Skopje	`6.90ms` from Sofia, BG
221.205.204.56	AS4837 CHINA UNICOM China169 Backbone	`2.25ms` from Taiyuan, CN
62.46.233.200	AS8447 A1 Telekom Austria AG	`0.75ms` from Vienna, AT
172.73.221.40	AS11426 Charter Communications Inc	`13.15ms` from Atlanta, US
178.118.94.136	AS6848 Telenet BV	`6.66ms` from Brussels, BE
118.136.185.152	AS23700 Linknet-Fastnet ASN	`4.59ms` from Jakarta, ID
60.19.92.200	AS4837 CHINA UNICOM China169 Backbone	`3.49ms` from Liaoyang, CN
2.220.154.120	AS5607 Sky UK Limited	`4.95ms` from London, GB

Traceroute

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

traceroute -a -n -q1 -f4 18.3.21.3

traceroute to 18.3.21.3 (18.3.21.3): 64 hops max, 52 byte packets

4 [AS174] 154.54.165.17 0.959 ms

5 [AS174] 154.54.168.190 1.658 ms

6 [AS174] 154.24.67.230 1.733 ms

7 *

8 [AS3] 18.3.21.3 1.278 ms

Measurement taken from

IPinfo ProbeNet in Santa Clara, US

On December 6th 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.

An API built with users in mind: reliable, accurate, and easy-to-use

Discover why industry-leading companies around the globe love our data. IPinfo's accurate insights fuel use cases from cybersecurity, data enrichment, web personalization, and much more.

Get Started for Free Contact Sales