161.51.40.0/23

AS2764 · AAPT Limited

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Summary

Country	United States
Domain	kbr.com
ASN	AS2764
Registry	ARIN
ID	KELLOGG-BROWN-ROOT-INC

WHOIS Details

NetHandle:      NET-161-51-0-0-1
OrgID:          KBR-3
Parent:         NET-161-0-0-0-0
NetName:        KELLOGG-BROWN-ROOT-INC
NetRange:       161.51.0.0 - 161.51.47.255
NetType:        allocation
RegDate:        1992-05-27
Updated:        2023-12-27
Source:         ARIN


OrgID:          KBR-3
OrgName:        KBR
CanAllocate:    
Street:         601 Jefferson Ave
City:           Houston
State/Prov:     TX
Country:        US
PostalCode:     77002
RegDate:        2004-11-15
Updated:        2020-02-13
OrgAdminHandle: ADMIN447-ARIN
OrgTechHandle:  HERRI169-ARIN
OrgTechHandle:  TECHN193-ARIN
OrgAbuseHandle: TECHN193-ARIN
Source:         ARIN


POCHandle:      ADMIN447-ARIN
IsRole:         Y
LastName:       Administrative POC
FirstName:      
Street:         601 Jefferson Ave
City:           Houston
State/Prov:     TX
Country:        US
PostalCode:     77002
RegDate:        2004-11-15
Updated:        2025-05-16
OfficePhone:    +1-713-753-4000
Mailbox:        kbrdnsadmin@kbr.com
Source:         ARIN


POCHandle:      HERRI169-ARIN
IsRole:         N
LastName:       Herrington
FirstName:      Mandy
Street:         601 Jefferson
City:           Houston
State/Prov:     TX
Country:        US
PostalCode:     77002
RegDate:        2020-01-22
Updated:        2023-08-28
OfficePhone:    +1-713-753-4946
Mailbox:        mandy.herrington@kbr.com
Source:         ARIN


POCHandle:      TECHN193-ARIN
IsRole:         Y
LastName:       Technical POC
FirstName:      
Street:         601 Jefferson Ave
City:           Houston
State/Prov:     TX
Country:        US
PostalCode:     77002
RegDate:        2004-11-15
Updated:        2025-08-05
OfficePhone:    +1-713-753-4357
Mailbox:        kbrdnsadmin@kbr.com
Source:         ARIN

Nearby Ranges

BGP prefixes that overlap with 161.51.0.0/16

Range	ASN	Company	Num of IPs
161.51.192.0/19	AS201838	Community Fibre Limited	8,192
161.51.64.0/19	AS39686	Eurofiber Nederland BV	8,192
161.51.48.0/20	AS201838	Legaco Networks B.V.	4,096
161.51.224.0/20	AS201838	Community Fibre Limited	4,096
161.51.240.0/21	AS21263	TeleData GmbH	2,048
161.51.128.0/22	AS212795	Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.	1,024
161.51.96.0/23	AS201838	Legaco Networks B.V.	512
161.51.252.0/23	AS201838	Legaco Networks B.V.	512
161.51.255.0/24	AS205037	Kisters AG	256
161.51.101.0/24	AS12859	Laposta BV	256
161.51.99.0/24	AS14618	STI Group	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
5.194.212.39	AS5384 Emirates Internet	`6.46ms` from Al Fujairah City, AE
82.169.222.247	AS1136 KPN B.V.	`1.23ms` from Amsterdam, NL
131.92.38.39	AS213 Headquarters, USAISC	`2.65ms` from Ashburn, US
207.155.49.39	AS7029 Windstream Communications LLC	`9.16ms` from Atlanta, US
166.117.151.151	AS16509 Amazon.com, Inc.	`0.04ms` from Bangkok, TH
3.30.104.23	AS8987 Amazon Data Services Ireland Ltd	`0.37ms` from Boardman, US
175.19.24.247	AS4837 CHINA UNICOM China169 Backbone	`1.89ms` from Changchun, CN
182.129.144.55	AS4134 CHINANET-BACKBONE	`7.06ms` from Chengdu, CN
73.72.230.135	AS7922 Comcast Cable Communications, LLC	`6.79ms` from Chicago, US
217.87.144.7	AS3320 Deutsche Telekom AG	`8.52ms` from Frankfurt am Main, DE
79.218.107.71	AS3320 Deutsche Telekom AG	`2.79ms` from Frankfurt am Main, DE
27.40.70.183	AS17816 China Unicom IP network China169 Guangdong province	`3.49ms` from Guangzhou, CN
35.243.142.215	AS396982 Google LLC	`0.13ms` from Moncks Corner, US
221.2.111.151	AS4837 CHINA UNICOM China169 Backbone	`6.54ms` from Qingdao, CN
14.45.55.151	AS4766 Korea Telecom	`6.14ms` from Seoul, KR
140.99.62.199	AS212238 Datacamp Limited	`0.30ms` from Singapore, SG
34.182.122.247	AS396982 Google LLC	`0.12ms` from The Dalles, US
1.89.56.119	AS17429 BEIJING GEHUA CATV NETWORK CO.LTD	`10.82ms` from Beijing, CN
34.171.126.119	AS396982 Google LLC	`0.10ms` from Council Bluffs, US
84.38.69.199	AS204119 ispOne business GmbH	`0.47ms` from Frankfurt am Main, DE
5.67.28.215	AS5607 Sky UK Limited	`1.20ms` from London, GB
172.118.38.247	AS20001 Charter Communications Inc	`6.15ms` from Los Angeles, US
174.20.109.167	AS209 CenturyLink Communications, LLC	`1.77ms` from Minneapolis, US
95.163.181.151	AS47764 LLC VK	`0.88ms` from Moscow, RU
4.190.131.135	AS8075 Microsoft Corporation	`0.34ms` from Osaka, JP

Traceroute

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

traceroute -a -n -q1 -f5 -m8 161.51.41.237

traceroute to 161.51.41.237 (161.51.41.237): 8 hops max, 52 byte packets

5 [AS749] 11.94.160.122 10.583 ms

6 *

7 *

8 *

Measurement taken from

IPinfo ProbeNet in Fuzhou, CN

On January 19th 2026

What are IP address ranges?

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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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