1. All IP Ranges
  2. 128.0.0.0/8
  3. 128.231.0.0/16
  4. AS3527  | 128.231.0.0/16

128.231.0.0/16

AS3527  ·  National Institutes of Health

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Summary

Country United States
Domain nih.gov
ASN AS3527
Registry ARIN
ID NIHNET-1

WHOIS Details

NetHandle:      NET-128-231-0-0-1
OrgID:          NIH-Z
Parent:         NET-128-0-0-0-0
NetName:        NIHNET-1
NetRange:       128.231.0.0 - 128.231.255.255
NetType:        allocation
RegDate:        1987-05-06
Updated:        2022-10-28
Source:         ARIN


OrgID:          NIH-Z
OrgName:        National Institutes of Health
CanAllocate:    
Street:         9000 Rockville Pike
Street:         MSC 4805
City:           Bethesda
State/Prov:     MD
Country:        US
PostalCode:     20892-4805
RegDate:        2022-10-09
Updated:        2025-06-05
OrgAdminHandle: NIHAD-ARIN
OrgTechHandle:  NIHTE-ARIN
OrgAbuseHandle: NIHTE-ARIN
OrgNOCHandle:   NIHAD-ARIN
OrgRoutingHandle:   NIHTE-ARIN
OrgDNSHandle:   NIHAD-ARIN
Source:         ARIN


POCHandle:      NIHTE-ARIN
IsRole:         Y
LastName:       NIHtechs
FirstName:      
Street:         6555 Rock Sping Dr
Street:         RM 3se21m MSC 4805
City:           Bethesda
State/Prov:     MD
Country:        US
PostalCode:     20892-4805
RegDate:        2020-06-24
Updated:        2025-04-08
OfficePhone:    +1-301-402-3141
Mailbox:        citnsarin@mail.nih.gov
Source:         ARIN


POCHandle:      NIHAD-ARIN
IsRole:         Y
LastName:       NIHadm
FirstName:      
Street:         6555 Rock Sping DrRM 3se21m MSC 4805
City:           Bethesda
State/Prov:     MD
Country:        US
PostalCode:     20892-4805
RegDate:        2020-08-11
Updated:        2025-04-08
OfficePhone:    +1-301-402-3141
Mailbox:        citnsarin@mail.nih.gov
Source:         ARIN

Nearby Ranges

BGP prefixes that overlap with 128.0.0.0/8

Range ASN Company Num of IPs
128.78.0.0/15 AS5410 Bouygues Telecom SA 131,072
128.178.0.0/15 AS559 Ecublens Camp Net 131,072
128.130.0.0/15 AS679 Technische Universitaet Wien 131,072
128.134.0.0/16 AS4766 Korea Telecom 65,536
128.193.0.0/16 AS4201 Oregon State University 65,536
128.174.0.0/16 AS38 University of Illinois 65,536
128.15.0.0/16 AS45 Lawrence Livermore National Laboratory 65,536
128.236.0.0/16 AS391 Air Force Systems Networking 65,536
128.143.0.0/16 AS225 University of Virginia 65,536
128.202.0.0/16 AS391 Air Force Systems Networking 65,536
128.155.0.0/16 AS270 National Aeronautics and Space Administration 65,536
128.189.0.0/16 AS271 BCNET 65,536
128.242.0.0/16 AS2914 NTT America, Inc. 65,536
128.12.0.0/16 AS32 Stanford University 65,536
128.52.0.0/16 AS3 Massachusetts Institute of Technology 65,536
128.34.0.0/16 AS22 Navy Network Information Center (NNIC) 65,536
128.1.0.0/16 AS21859 Zenlayer Inc 65,536
128.100.0.0/16 AS239 University of Toronto 65,536
128.32.0.0/16 AS25 University of California at Berkeley 65,536
128.43.0.0/16 AS3766 Shared Services Canada 65,536
128.194.0.0/16 AS3794 Texas A&M University 65,536
128.102.0.0/16 AS270 National Aeronautics and Space Administration 65,536
128.253.0.0/16 AS26 Cornell University 65,536
128.159.0.0/16 AS270 National Aeronautics and Space Administration 65,536
128.217.0.0/16 AS270 National Aeronautics and Space Administration 65,536
128.241.0.0/16 AS2914 NTT America, Inc. 65,536
128.121.0.0/16 AS2914 NTT America, Inc. 65,536
128.156.0.0/16 AS297 National Aeronautics and Space Administration 65,536
128.55.0.0/16 AS2936 ESnet 65,536
128.195.0.0/16 AS299 University of California, Irvine 65,536
128.200.0.0/16 AS299 University of California, Irvine 65,536
128.49.0.0/16 AS22 Navy Network Information Center (NNIC) 65,536
128.234.0.0/16 AS25019 Saudi Telecom Company JSC 65,536
128.93.0.0/16 AS2200 Institut National de Recherche en Informatique et Automatique 65,536
128.39.0.0/16 AS224 UNINETT backbone network 65,536
128.233.0.0/16 AS22950 University of Saskatchewan 65,536
128.163.0.0/16 AS23162 University of Kentucky 65,536
128.170.0.0/16 AS243 L3Harris Technologies, Inc. 65,536
128.98.0.0/16 AS24775 QinetiQ TIM 65,536
128.8.0.0/16 AS27 University of Maryland 65,536
128.157.0.0/16 AS270 National Aeronautics and Space Administration 65,536
128.53.0.0/16 AS2514 NTT PC Communications,Inc. 65,536
128.28.0.0/16 AS2514 NTT PC Communications,Inc. 65,536
128.47.0.0/16 AS252 Headquarters, USAISC 65,536
128.84.0.0/16 AS26 Cornell University 65,536
128.252.0.0/16 AS2552 Washington University 65,536
128.186.0.0/16 AS2553 Florida State University 65,536
128.158.0.0/16 AS270 National Aeronautics and Space Administration 65,536
128.18.0.0/16 AS264 SRI International 65,536
128.183.0.0/16 AS270 National Aeronautics and Space Administration 65,536

Hosted domains

There are 12 domain names hosted across 7 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address Domain Domains on this IP
128.231.198.5 nci-wiki.com 3
128.231.19.108 tox21.gov 2
128.231.19.104 ncats.io 2
128.231.198.7 niaid.health 2
128.231.91.30 genome.gov 1
128.231.89.150 hhsoig.gov 1
128.231.198.6 nih.app 1

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

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

IP Address ASN Details
128.231.54.233 AS3527 National Institutes of Health 1.88ms from Ashburn, US
128.231.19.112 AS3527 National Institutes of Health 1.73ms from Ashburn, US
128.231.64.70 AS3527 National Institutes of Health 2.06ms from Ashburn, US
128.231.3.13 AS3527 National Institutes of Health 4.33ms from Ashburn, US
128.231.87.83 AS3527 National Institutes of Health 1.93ms from Ashburn, US
128.231.91.25 AS3527 National Institutes of Health 1.82ms from Ashburn, US
128.231.69.199 AS3527 National Institutes of Health 1.74ms from Ashburn, US
128.231.2.83 AS3527 National Institutes of Health 1.71ms from Ashburn, US
128.231.124.156 AS3527 National Institutes of Health 1.81ms from Ashburn, US
128.231.17.12 AS3527 National Institutes of Health 1.74ms from Ashburn, US
128.231.89.125 AS3527 National Institutes of Health 1.74ms from Ashburn, US
128.231.88.40 AS3527 National Institutes of Health 2.23ms from Ashburn, US
128.231.90.198 AS3527 National Institutes of Health 1.81ms from Ashburn, US
128.231.58.118 AS3527 National Institutes of Health 2.84ms from Ashburn, US
128.231.125.179 AS3527 National Institutes of Health 1.83ms from Ashburn, US
128.231.0.52 AS3527 National Institutes of Health 1.80ms from Ashburn, US
128.231.149.221 AS3527 National Institutes of Health 225.90ms from Auckland, NZ
128.231.244.194 AS3527 National Institutes of Health 1.95ms from Ashburn, US
128.231.210.41 AS3527 National Institutes of Health 1.73ms from Ashburn, US
128.231.255.77 AS3527 National Institutes of Health 1.77ms from Ashburn, US
128.231.152.236 AS3527 National Institutes of Health 1.73ms from Ashburn, US
128.231.148.14 AS3527 National Institutes of Health 1.71ms from Ashburn, US
128.231.128.231 AS3527 National Institutes of Health 2.25ms from Ashburn, US
128.231.243.200 AS3527 National Institutes of Health 1.78ms from Ashburn, US
128.231.153.64 AS3527 National Institutes of Health 1.82ms 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
102.47.219.192 AS8452 TE-AS 3.90ms from Cairo, EG
119.7.175.224 AS4837 CHINA UNICOM China169 Backbone 6.59ms from Chengdu, CN
61.154.77.48 AS4134 CHINANET-BACKBONE 8.46ms from Fuzhou, CN
171.252.247.240 AS7552 Viettel Group 2.05ms from Ho Chi Minh City, VN
202.0.175.48 AS17554 Citic Telecom International (Data) Limited. 1.50ms from Hong Kong, HK
149.90.35.96 AS12353 Vodafone Portugal 6.04ms from Lisbon, PT
83.51.121.240 AS3352 TELEFONICA DE ESPANA S.A.U. 8.57ms from Madrid, ES
121.5.201.208 AS45090 Shenzhen Tencent Computer Systems Company Limited 2.26ms from Shanghai, CN
89.39.95.32 AS35326 "SUVAN NET" LLC 1.06ms from Tashkent, UZ
24.254.246.176 AS22773 Cox Communications Inc. 6.29ms from Ashburn, US
35.162.129.64 AS16509 Amazon.com, Inc. 0.16ms from Boardman, US
118.250.66.96 AS4134 CHINANET-BACKBONE 3.35ms from Changsha, CN
69.132.249.80 AS11426 Charter Communications Inc 6.75ms from Charlotte, US
70.122.163.240 AS11427 Charter Communications Inc 13.74ms from Dallas, US
221.200.80.64 AS4837 CHINA UNICOM China169 Backbone 8.46ms from Harbin, CN
72.57.146.0 AS56286 IX Telecom 1.28ms from Kuala Lumpur, MY
5.50.115.160 AS5410 Bouygues Telecom SA 5.25ms from Lyon, FR
84.67.255.144 AS5378 Vodafone Limited 5.84ms from Manchester, GB
34.107.253.16 AS396982 Google LLC 0.08ms from Melbourne, AU
182.161.187.0 AS45361 Ulsan Jung-Ang Broadcasting Network 7.13ms from Seoul, KR
153.127.20.240 AS7684 SAKURA Internet Inc. 16.41ms from Tokyo, JP
135.149.91.160 AS8075 Microsoft Corporation 0.79ms from Tokyo, JP
109.241.45.240 AS29314 VECTRA S.A. 11.57ms from Warsaw, PL
178.42.255.240 AS5617 Orange Polska Spolka Akcyjna 2.39ms from Warsaw, PL
42.229.240.224 AS4837 CHINA UNICOM China169 Backbone 8.04ms from Zhengzhou, CN

Traceroute

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

$
traceroute -a -n -q1 -f6 -m9 128.231.250.30
traceroute to 128.231.250.30 (128.231.250.30): 9 hops max, 52 byte packets
6 [] 208.115.136.116 12.979 ms
7 *
8 *
9 *
Measurement taken from IPinfo ProbeNet in Columbus, US
On

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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