204.147.144.0/20

AS401773 · Washington County, Oregon

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Summary

Country	United States
Domain	washington.or.us
ASN	AS401773
Registry	ARIN
ID	WCO-204

WHOIS Details

NetHandle:      NET-204-147-144-0-1
OrgID:          WCO
Parent:         NET-204-0-0-0-0
NetName:        WCO-204
NetRange:       204.147.144.0 - 204.147.159.255
NetType:        allocation
Comment:        https://www.washingtoncountyor.gov
RegDate:        1994-12-13
Updated:        2025-06-16
TechHandle:     NETWO10040-ARIN
AbuseHandle:    NETWO10040-ARIN
NOCHandle:      NETWO10040-ARIN
Source:         ARIN


OrgID:          WCO
OrgName:        Washington County, Oregon
CanAllocate:    
Street:         155 N FIRST AVE
City:           HILLSBORO
State/Prov:     OR
Country:        US
PostalCode:     97124
RegDate:        1994-12-13
Updated:        2025-07-29
OrgAdminHandle: TECHN1908-ARIN
OrgTechHandle:  BD563-ARIN
OrgTechHandle:  NETWO10040-ARIN
OrgTechHandle:  SCHWE216-ARIN
OrgTechHandle:  SPRAK15-ARIN
OrgTechHandle:  TECHN1907-ARIN
OrgAbuseHandle: NETWO10040-ARIN
OrgNOCHandle:   NETWO10040-ARIN
OrgRoutingHandle:   NETWO10040-ARIN
OrgDNSHandle:   NETWO10040-ARIN
Source:         ARIN


POCHandle:      BD563-ARIN
IsRole:         N
LastName:       Dunn
FirstName:      Brendan
Street:         155 North First Ave
Street:         MS 1
City:           Hillsboro
State/Prov:     OR
Country:        US
PostalCode:     97124
RegDate:        2001-01-11
Updated:        2025-06-02
OfficePhone:    +1-503-846-4526
MobilePhone:    +1-503-849-2683
FaxPhone:       +1-503-846-8895
Mailbox:        Brendan_Dunn@co.washington.or.us
Mailbox:        Brendan_Dunn@washingtoncountyor.gov
Source:         ARIN


POCHandle:      NETWO10040-ARIN
IsRole:         Y
LastName:       Network Architect
FirstName:      
Street:         155 N 1st Ave
City:           Hillsboro
State/Prov:     OR
Country:        US
PostalCode:     97124
RegDate:        2024-02-02
Updated:        2025-05-19
OfficePhone:    +1-503-846-8051
Mailbox:        antonio_sanchez@washingtoncountyor.gov
Source:         ARIN


POCHandle:      SCHWE216-ARIN
IsRole:         N
LastName:       Schwecheimer
FirstName:      Ryan
Street:         155 N. 1st Ave
City:           Hillboro
State/Prov:     OR
Country:        US
PostalCode:     97124
RegDate:        2025-07-29
Updated:        2025-07-29
OfficePhone:    +1-661-490-3904
Mailbox:        Ryan_Schwecheimer@washingtoncountyor.gov
Source:         ARIN


POCHandle:      TECHN1908-ARIN
IsRole:         Y
LastName:       Technical Manager
FirstName:      
Street:         155 N 1st Ave
Street:         MS#1
City:           Hillsboro
State/Prov:     OR
Country:        US
PostalCode:     97124
RegDate:        2024-02-02
Updated:        2025-02-01
OfficePhone:    +1-503-846-8034
Mailbox:        luke_ross@washingtoncountyor.gov
Source:         ARIN


POCHandle:      TECHN1907-ARIN
IsRole:         Y
LastName:       Technical Supervisor
FirstName:      
Street:         155 N 1st Ave, Hillsboro, OR 97124
City:           HILLSBORO
State/Prov:     OR
Country:        US
PostalCode:     97124-3072
RegDate:        2024-02-02
Updated:        2025-02-03
OfficePhone:    +1-503-846-8428
MobilePhone:    +1-971-409-3415
Mailbox:        shane_boyle@Washingtoncountyor.gov
Source:         ARIN


POCHandle:      SPRAK15-ARIN
IsRole:         N
LastName:       Spraker
FirstName:      Daniel
Street:         155 N 1st Ave
City:           Hillsboro
State/Prov:     OR
Country:        US
PostalCode:     97214
RegDate:        2025-07-29
Updated:        2025-07-29
OfficePhone:    +1-503-367-2020
Mailbox:        dan_spraker@washingtoncountyor.gov
Source:         ARIN

Nearby Ranges

BGP prefixes that overlap with 204.147.0.0/16

Range	ASN	Company	Num of IPs
204.147.32.0/19	AS22394	Verizon Business	8,192
204.147.80.0/20	AS209	CenturyLink Communications, LLC	4,096
204.147.0.0/20	AS25979	CITY OF MADISON	4,096
204.147.224.0/20	AS3257	GTT Americas, LLC	4,096
204.147.16.0/20	AS396979	OXNARD SCHOOL DISTRICT	4,096
204.147.176.0/20	AS401415	Alliance Communications	4,096
204.147.208.0/20	AS25845	Virginia Mason Medical Center	4,096
204.147.204.0/22	AS14645	CJIS-Consortium-20th-Court Administration	1,024
204.147.232.0/22	AS399461	BITE	1,024
204.147.76.0/22	AS10929	eStruxture Data Centers Inc.	1,024
204.147.202.0/23	AS25891	School Of Visual Arts, Inc.	512

Hosted domains

There are 12 domain names hosted across 10 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
204.147.156.131	urmdsafety.com	3
204.147.156.18	wcorionpa-test.org	1
204.147.156.20	washcotax.org	1
204.147.156.117	alohatomorrow.com	1
204.147.156.22	washcotax-dev.org	1
204.147.156.180	washcoepr.net	1
204.147.156.170	sbwcepr.net	1
204.147.156.17	wcorionpa.org	1
204.147.156.21	washcotax-test.org	1
204.147.156.19	wcorionpa-dev.org	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

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

IP Address	ASN	Details
204.147.156.40	AS401773 Washington County, Oregon	`0.85ms` from Portland, 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
132.220.48.20	AS8075 Microsoft Corporation	`0.24ms` from Amsterdam, NL
142.227.239.212	AS23307 Nova Scotia Department of Education	`13.09ms` from Boston, US
129.229.133.84	AS668 United States Department of Defense (DoD)	`4.17ms` from Chicago, US
200.174.180.196	AS4230 CLARO S.A.	`17.13ms` from Fortaleza, BR
212.125.42.196	AS12808 dtms GmbH	`0.37ms` from Frankfurt am Main, DE
52.58.220.100	AS16509 Amazon.com, Inc.	`0.17ms` from Frankfurt am Main, DE
111.230.189.100	AS45090 Shenzhen Tencent Computer Systems Company Limited	`2.23ms` from Guangzhou, CN
68.119.129.244	AS20115 Charter Communications LLC	`4.96ms` from Los Angeles, US
108.208.202.212	AS7018 AT&T Enterprises, LLC	`8.12ms` from Los Angeles, US
162.38.130.100	AS2200 Renater	`3.12ms` from Marseille, FR
108.79.62.196	AS7018 AT&T Enterprises, LLC	`10.96ms` from Miami, US
75.167.222.196	AS209 CenturyLink Communications, LLC	`1.84ms` from Phoenix, US
201.131.184.4	AS52912 VIEIRA E RETECHESKI LTDA	`10.09ms` from Sao Paulo, BR
195.47.255.148	AS29355 Kcell JSC	`0.49ms` from Almaty, KZ
64.83.161.212	AS4181 TDS TELECOM	`5.95ms` from Atlanta, US
36.64.229.36	AS7713 PT Telekomunikasi Indonesia	`7.55ms` from Batam, ID
159.250.5.116	AS11776 Breezeline	`10.99ms` from Boston, US
156.196.242.36	AS8452 TE-AS	`4.54ms` from Cairo, EG
84.149.123.244	AS3320 Deutsche Telekom AG	`2.74ms` from Duesseldorf, DE
46.223.102.164	AS3209 Vodafone GmbH	`11.29ms` from Frankfurt am Main, DE
154.86.216.84	AS134548 DXTL Tseung Kwan O Service	`0.69ms` from Hong Kong, HK
221.168.187.84	AS4766 Korea Telecom	`0.81ms` from Incheon, KR
2.96.104.228	AS13285 TalkTalk Communications Limited	`8.42ms` from London, GB
60.153.128.4	AS17676 SoftBank Corp.	`3.90ms` from Osaka, JP
3.38.41.228	AS16509 Amazon.com, Inc.	`0.50ms` from Seoul, KR

Traceroute

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

traceroute -a -n -q1 -m5 204.147.158.185

traceroute to 204.147.158.185 (204.147.158.185): 5 hops max, 52 byte packets

1 [AS31898] 140.91.242.20 0.074 ms

2 [AS15802] 91.74.125.170 0.338 ms

3 *

4 *

5 *

Measurement taken from

IPinfo ProbeNet in Abu Dhabi, AE

On January 19th 2026

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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