166.123.204.0/24

AS13506 · United States Department of the Treasury

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Summary

Country	United States
Domain	treasury.gov
ASN	AS13506
Parent Range	166.123.0.0/16
Registry	ARIN
ID	US-DEPARTMENT-OF-THE-TREASURY

WHOIS Details

NetHandle:      NET-166-123-0-0-1
OrgID:          UDT-6-Z
Parent:         NET-166-0-0-0-0
NetName:        US-DEPARTMENT-OF-THE-TREASURY
NetRange:       166.123.0.0 - 166.123.255.255
NetType:        allocation
RegDate:        1993-12-29
Updated:        2024-05-31
Source:         ARIN


OrgID:          UDT-6-Z
OrgName:        United States Department of the Treasury
CanAllocate:    
Street:         OCIO
Street:         1750 Pennsylvania Ave., NW
City:           Washington
State/Prov:     DC
Country:        US
PostalCode:     20006
RegDate:        2024-05-01
Updated:        2025-03-27
OrgAdminHandle: METZI13-ARIN
OrgTechHandle:  DLS46-ARIN
OrgTechHandle:  METZI13-ARIN
OrgTechHandle:  TIC5-ARIN
OrgAbuseHandle: USTRE-ARIN
OrgNOCHandle:   USTRE-ARIN
OrgRoutingHandle:   TIC5-ARIN
Source:         ARIN


POCHandle:      METZI13-ARIN
IsRole:         N
LastName:       Metzinger
FirstName:      Timothy
Street:         1750 Pennsylvania Ave. NW
Street:         OCIO/IO
City:           Washington
State/Prov:     DC
Country:        US
PostalCode:     20006
RegDate:        2025-03-27
Updated:        2026-03-27
OfficePhone:    +1-202-286-9654
Mailbox:        timothy.metzinger@treasury.gov
Source:         ARIN


POCHandle:      DLS46-ARIN
IsRole:         N
LastName:       Smicker
FirstName:      Daniel
Street:         200 Third St
City:           Parkersburg
State/Prov:     WV
Country:        US
PostalCode:     26106
RegDate:        2012-09-05
Updated:        2025-08-22
OfficePhone:    +1-304-480-7779
Mailbox:        ecb-hosting@fiscal.treasury.gov
Source:         ARIN


POCHandle:      TIC5-ARIN
IsRole:         Y
LastName:       TIC
FirstName:      
Street:         200 3rd Street
City:           Parkersburg
State/Prov:     WV
Country:        US
PostalCode:     26101
RegDate:        2024-03-07
Updated:        2026-03-12
OfficePhone:    +1-304-480-6845
Mailbox:        ecb-tic@fiscal.treasury.gov
Source:         ARIN


POCHandle:      USTRE-ARIN
IsRole:         Y
LastName:       US-TREASURY-SOC
FirstName:      
Street:         1500 Pennsylvania Avenue
City:           Washington
State/Prov:     DC
Country:        US
PostalCode:     20220
RegDate:        2025-03-26
Updated:        2025-03-26
OfficePhone:    +1-202-927-9777
Mailbox:        soc@soc.treasury.gov
Source:         ARIN

Overlapping Ranges

BGP prefixes that contain 166.123.204.0/24

Range	ASN	Company	Num of IPs
166.123.0.0/16	AS13506	United States Department of the Treasury	65,536

Nearby Ranges

BGP prefixes that overlap with 166.123.0.0/16

Range	ASN	Company	Num of IPs
166.123.0.0/16	AS13506	United States Department of the Treasury	65,536

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
31.207.200.184	AS8369 Intersvyaz-2 JSC	`2.10ms` from Chelyabinsk, RU
177.152.126.72	AS271477 M2D TELECOMUNICACOES LTDA	`12.95ms` from Fortaleza, BR
115.194.223.120	AS4134 CHINANET BACKBONE	`5.56ms` from Hangzhou, CN
84.6.240.232	AS15557 Societe Francaise Du Radiotelephone - SFR SA	`10.92ms` from Paris, FR
65.49.159.24	AS25914 Quadro Communications Co-Operative Inc	`4.04ms` from Toronto, CA
23.254.230.40	AS54290 Hostwinds LLC.	`0.20ms` from Amsterdam, NL
66.134.89.168	AS3257 GTT Communications Inc.	`0.63ms` from Ashburn, US
217.65.59.216	AS8301 Gibtelecom Ltd.	`11.03ms` from Madrid, ES
103.21.5.248	AS136000 Lightning Broadband Pty Ltd	`1.04ms` from Melbourne, AU
68.34.203.152	AS7922 Comcast Cable Communications, LLC	`7.50ms` from Murfreesboro, US
20.99.190.8	AS8075 Microsoft Corporation	`0.29ms` from Quincy, US
3.229.6.104	AS14618 Amazon.com, Inc.	`0.26ms` from Reston, US
54.193.89.136	AS16509 Amazon.com, Inc.	`0.22ms` from San Jose, US
122.235.233.72	AS4134 CHINANET BACKBONE	`7.78ms` from Shanghai, CN
113.35.163.136	AS17506 ARTERIA Networks Corporation	`2.13ms` from Tokyo, JP
5.141.173.88	AS12389 PJSC Rostelecom	`5.50ms` from Yekaterinburg, RU
213.10.190.24	AS1136 KPN B.V.	`1.01ms` from Amsterdam, NL
196.138.166.232	AS24835 Vodafone Data	`15.67ms` from Cairo, EG
194.75.62.56	AS2856 British Telecommunications PLC	`1.06ms` from Erith, GB
178.205.84.200	AS28840 PJSC "TATTELECOM"	`1.36ms` from Kazan, RU
68.107.31.56	AS22773 Cox Communications Inc.	`7.96ms` from Los Angeles, US
79.153.132.168	AS3352 TELEFONICA DE ESPANA S.A.U.	`10.41ms` from Madrid, ES
37.68.68.184	AS15557 Societe Francaise Du Radiotelephone - SFR SA	`16.93ms` from Milan, IT
167.57.157.216	AS6057 Administracion Nacional de Telecomunicaciones	`1.81ms` from Montevideo, UY
211.120.133.88	AS9617 JCOM Co., Ltd.	`7.69ms` 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 -m10 166.123.204.10

traceroute to 166.123.204.10 (166.123.204.10): 10 hops max, 52 byte packets

1 [AS31898] 140.91.234.125 0.115 ms

2 [AS2914] 168.143.97.186 0.559 ms

3 [AS2914] 168.143.97.185 0.341 ms

4 *

5 [AS2914] 129.250.5.209 0.394 ms

6 [AS2914] 128.241.8.213 0.383 ms

7 [AS14244] 199.19.71.66 0.71 ms

8 *

9 *

10 *

Measurement taken from

IPinfo ProbeNet in San Jose, US

On April 25th 2026

What are IP address ranges?

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