129.43.0.0/16

AS6150 · National Cancer Institute

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Summary

Country	United States
Domain	cancer.gov
ASN	AS6150
Registry	ARIN
ID	NCI-FCRF

WHOIS Details

NetHandle:      NET-129-43-0-0-1
OrgID:          NCI-1-Z
Parent:         NET-129-0-0-0-0
NetName:        NCI-FCRF
NetRange:       129.43.0.0 - 129.43.255.255
NetType:        allocation
RegDate:        1987-07-29
Updated:        2024-12-19
Source:         ARIN


OrgID:          NCI-1-Z
OrgName:        National Cancer Institute
CanAllocate:    
Street:         Frederick Cancer Research Facility
Street:         P.O. Box B, Building 430
City:           Frederick
State/Prov:     MD
Country:        US
PostalCode:     21702
RegDate:        2024-12-19
Updated:        2024-12-19
OrgAdminHandle: KRUSI-ARIN
OrgTechHandle:  KRUSI-ARIN
OrgTechHandle:  REYNO712-ARIN
OrgTechHandle:  TRAYN4-ARIN
OrgAbuseHandle: FREEM420-ARIN
OrgAbuseHandle: RODRI1526-ARIN
OrgRoutingHandle:   TRAYN4-ARIN
OrgDNSHandle:   REYNO712-ARIN
Source:         ARIN


POCHandle:      REYNO712-ARIN
IsRole:         N
LastName:       Reynolds
FirstName:      Matthew
Street:         1050 Boyles Street
Street:         B430
City:           Frederick
State/Prov:     MD
Country:        US
PostalCode:     21702
RegDate:        2022-01-31
Updated:        2024-01-31
OfficePhone:    +1-301-846-7419
Mailbox:        matthew.reynolds@nih.gov
Source:         ARIN


POCHandle:      RODRI1526-ARIN
IsRole:         N
LastName:       Rodriguez
FirstName:      Sergio
Street:         1050 Boyles Street
Street:         B430
City:           Frederick
State/Prov:     MD
Country:        US
PostalCode:     21702
RegDate:        2022-01-31
Updated:        2022-01-31
OfficePhone:    +1-301-846-5784
Mailbox:        sergio.rodriguez@nih.gov
Source:         ARIN


POCHandle:      TRAYN4-ARIN
IsRole:         N
LastName:       Traynor
FirstName:      Derek
Street:         1050 Boyles Street
City:           Frederick
State/Prov:     MD
Country:        US
PostalCode:     21702
RegDate:        2018-11-14
Updated:        2024-08-02
OfficePhone:    +1-301-846-5782
Mailbox:        derek.traynor@nih.gov
Source:         ARIN


POCHandle:      KRUSI-ARIN
IsRole:         N
LastName:       Krusinski
FirstName:      Ed
Street:         1050 Boyles Street
City:           Frederick
State/Prov:     MD
Country:        US
PostalCode:     21702
RegDate:        2016-08-18
Updated:        2025-08-13
OfficePhone:    +1-301-846-5783
Mailbox:        krusinskie@mail.nih.gov
Source:         ARIN


POCHandle:      FREEM420-ARIN
IsRole:         N
LastName:       Freeman
FirstName:      Natasha
Street:         1050 Boyles Street
Street:         B430
City:           Frederick
State/Prov:     MD
Country:        US
PostalCode:     21702
RegDate:        2022-01-31
Updated:        2025-01-30
OfficePhone:    +1-301-846-6938
Mailbox:        natasha.freeman@nih.gov
Source:         ARIN

Nearby Ranges

BGP prefixes that overlap with 129.0.0.0/8

Range	ASN	Company	Num of IPs
129.131.0.0/16	AS27064	DoD Network Information Center	65,536
129.115.0.0/16	AS27594	University of Texas at San Antonio	65,536
129.168.0.0/16	AS270	National Aeronautics and Space Administration	65,536
129.130.0.0/16	AS2701	Kansas State University	65,536
129.164.0.0/16	AS270	National Aeronautics and Space Administration	65,536
129.34.0.0/16	AS27530	IBM	65,536
129.86.0.0/16	AS26577	BAE Systems Inc.	65,536
129.2.0.0/16	AS27	University of Maryland	65,536
129.186.0.0/16	AS2698	Iowa State University of Science and Technology	65,536
129.111.0.0/16	AS26971	University of Texas Health Science Center at San Antonio	65,536
129.81.0.0/16	AS10349	Tulane University	65,536
129.64.0.0/16	AS10561	Brandeis University	65,536
129.208.0.0/16	AS25019	Saudi Telecom Company JSC	65,536
129.249.0.0/16	AS2497	FUJIFILM Business Innovation Corp. Information & Communication Systems	65,536
129.125.0.0/16	AS1103	Groningen	65,536
129.99.0.0/16	AS10343	National Aeronautics and Space Administration	65,536
129.123.0.0/16	AS26046	Utah State University	65,536
129.17.0.0/16	AS16509	Amazon.com, Inc.	65,536
129.37.0.0/16	AS2685	AT&T Enterprises, LLC	65,536
129.15.0.0/16	AS25776	University of Oklahoma	65,536
129.47.0.0/16	AS16509	Amazon Technologies Inc.	65,536
129.36.0.0/16	AS2686	AT&T Enterprises, LLC	65,536
129.93.0.0/16	AS11546	The Board of Regents of the University of Nebraska	65,536
129.236.0.0/16	AS14	Lamont-Doherty Earth Observatory of Columbia University	65,536
129.19.0.0/16	AS14041	Colorado State University	65,536
129.25.0.0/16	AS11834	Drexel University	65,536
129.252.0.0/16	AS12005	University of South Carolina	65,536
129.170.0.0/16	AS10755	Dartmouth College	65,536
129.97.0.0/16	AS12093	University of Waterloo	65,536
129.237.0.0/16	AS2496	University of Kansas	65,536
129.109.0.0/16	AS14373	University of Texas Medical Branch	65,536
129.3.0.0/16	AS14433	State University of New York - Oswego	65,536
129.68.0.0/16	AS14529	Saint Joseph's University	65,536
129.82.0.0/16	AS12145	Colorado State University	65,536
129.27.0.0/16	AS1113	Zentraler Informatikdienst	65,536
129.223.0.0/16	AS16509	Amazon.com, Inc.	65,536
129.187.0.0/16	AS12816	Leibniz-Rechenzentrum (LRZ)	65,536
129.160.0.0/16	AS16509	Amazon Technologies Inc.	65,536
129.118.0.0/16	AS10421	Texas Tech University	65,536
129.30.0.0/16	AS16509	Amazon.com, Inc.	65,536
129.105.0.0/16	AS103	Northwestern University	65,536
129.235.0.0/16	AS16509	Amazon.com, Inc.	65,536
129.9.0.0/16	AS14852	Chrysler Group LLC	65,536
129.113.0.0/16	AS11481	University of Texas Rio Grande Valley	65,536
129.239.0.0/16	AS16509	Amazon.com, Inc.	65,536
129.10.0.0/16	AS156	Northeastern University	65,536
129.176.0.0/16	AS15830	Mayo Foundation for Medical Education and Research	65,536
129.112.0.0/16	AS13998	University of Texas Southwestern Medical Center	65,536
129.196.0.0/16	AS16435	Fluke Corporation	65,536
129.16.0.0/16	AS2841	Chalmers University Network	65,536

Hosted domains

There are 5 domain names hosted across 4 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
129.43.254.39	cancer.gov	2
129.43.110.22	ncifcrf.gov	1
129.43.40.17	proteincapturereagents.org	1
129.43.254.36	cptac.net	1

Hosted domains API

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Useful for Cybersecurity

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Pingable IPs

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

IP Address	ASN	Details
129.43.40.163	AS6150 National Cancer Institute	`2.70ms` from Ashburn, US
129.43.110.19	AS6150 National Cancer Institute	`2.70ms` from Ashburn, US
129.43.254.183	AS6150 National Cancer Institute	`2.70ms` from Ashburn, US
129.43.60.63	AS6150 National Cancer Institute	`2.89ms` from Ashburn, US
129.43.14.17	AS6150 National Cancer Institute	`2.72ms` from Ashburn, US
129.43.255.26	AS6150 National Cancer Institute	`2.72ms` 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
50.41.82.160	AS5650 Frontier Communications of America, Inc.	`11.80ms` from Ashburn, US
220.170.1.32	AS4134 CHINANET-BACKBONE	`2.17ms` from Changsha, CN
119.109.182.208	AS4837 CHINA UNICOM China169 Backbone	`12.97ms` from Liaoyang, CN
166.1.177.224	AS62240 Clouvider	`0.21ms` from London, GB
87.28.63.0	AS3269 Telecom Italia S.p.A.	`0.40ms` from Milan, IT
81.95.33.64	AS8491 Scientific-Production Enterprise Business Sviaz Holding LLC	`0.71ms` from Moscow, RU
118.4.137.224	AS4713 NTT DOCOMO BUSINESS,Inc.	`2.45ms` from Osaka, JP
189.126.185.208	AS28349 CABONNET INTERNET LTDA	`9.04ms` from Osasco, BR
147.93.91.32	AS47583 Hostinger International Limited	`0.41ms` from Paris, FR
50.46.91.176	AS20055 Wholesail networks LLC	`5.41ms` from Seattle, US
124.199.205.0	AS17864 SK Broadband Co Ltd	`1.49ms` from Seoul, KR
112.164.206.96	AS4766 Korea Telecom	`10.04ms` from Seoul, KR
175.241.46.176	AS4766 Korea Telecom	`7.17ms` from Seoul, KR
2.66.191.224	AS44034 Hi3G Access AB	`7.24ms` from Stockholm, SE
174.80.1.208	AS20115 Charter Communications LLC	`16.10ms` from Atlanta, US
71.203.10.224	AS7922 Comcast Cable Communications, LLC	`9.85ms` from Boca Raton, US
186.82.167.48	AS10620 Telmex Colombia S.A.	`9.55ms` from Bogota, CO
23.39.27.144	AS16625 Akamai Technologies, Inc.	`0.64ms` from Bogota, CO
94.191.51.192	AS45090 Shenzhen Tencent Computer Systems Company Limited	`0.17ms` from Chongqing, CN
14.233.226.160	AS45899 VNPT Corp	`0.81ms` from Da Nang, VN
76.183.146.48	AS11427 Charter Communications Inc	`5.09ms` from Dallas, US
79.211.159.64	AS3320 Deutsche Telekom AG	`3.84ms` from Hamburg, DE
172.71.213.192	AS13335 Cloudflare, Inc.	`0.53ms` from Hong Kong, HK
68.93.169.128	AS7018 AT&T Enterprises, LLC	`1.39ms` from Kansas City, US
80.41.135.112	AS13285 TalkTalk Communications Limited	`3.51ms` 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 -m9 129.43.64.174

traceroute to 129.43.64.174 (129.43.64.174): 9 hops max, 52 byte packets

1 [AS141995] 154.26.153.12 0.371 ms

2 *

3 *

4 *

5 *

6 [AS7713] 198.32.176.128 146.305 ms

7 *

8 *

9 *

Measurement taken from

IPinfo ProbeNet in Sydney, AU

On November 14th 2025

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