166.91.0.0/16

AS33084 · DC-Net

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Summary

Country	United States
Domain	dc.gov
ASN	AS33084
Registry	ARIN
ID	DCPS-NET

WHOIS Details

NetHandle:      NET-166-91-0-0-1
OrgID:          DCPS
Parent:         NET-166-0-0-0-0
NetName:        DCPS-NET
NetRange:       166.91.0.0 - 166.91.255.255
NetType:        allocation
RegDate:        1993-11-18
Updated:        2021-12-14
TechHandle:     OES-ARIN
TechHandle:     OOE-ARIN
AbuseHandle:    DNEA-ARIN
NOCHandle:      DNEA-ARIN
Source:         ARIN


OrgID:          DCPS
OrgName:        District of Columbia Public Schools
CanAllocate:    
Street:         825 North Capital Street, N.E.
City:           Washington DC
State/Prov:     DC
Country:        US
PostalCode:     20002
RegDate:        1993-11-18
Updated:        2022-01-07
OrgAdminHandle: OOE-ARIN
OrgTechHandle:  OCTOP-ARIN
OrgTechHandle:  OOE-ARIN
OrgAbuseHandle: OOE-ARIN
OrgNOCHandle:   OOE-ARIN
Source:         ARIN


POCHandle:      OES-ARIN
IsRole:         N
LastName:       Esene
FirstName:      Ocee
Street:         825 North Capitol Street NE
Street:         Office of Information & Technology, Room 5002
City:           Washington
State/Prov:     DC
Country:        US
PostalCode:     20002
RegDate:        2004-10-21
Updated:        2004-10-21
OfficePhone:    +1-202-442-5720
OfficePhone:    +1-202-442-5721
Mailbox:        [email protected]
Source:         ARIN


POCHandle:      OCTOP-ARIN
IsRole:         Y
LastName:       OCTO POC
FirstName:      
Street:         2720 Martin Luther King Jr Avenue, SE
City:           Washington
State/Prov:     DC
Country:        US
PostalCode:     20032
RegDate:        2018-09-25
Updated:        2021-09-29
OfficePhone:    +1-202-724-2028
Mailbox:        [email protected]
Source:         ARIN


POCHandle:      DNEA-ARIN
IsRole:         Y
LastName:       DCPS Network and Email Abuse
FirstName:      
Street:         825 North Capitol Street NE
Street:         Office of Information & Technology, Room 5002
City:           Washington
State/Prov:     DC
Country:        US
PostalCode:     20002
RegDate:        2004-10-21
Updated:        2004-10-21
OfficePhone:    +1-202-442-5699
OfficePhone:    +1-202-442-5706
Mailbox:        [email protected]
Source:         ARIN


POCHandle:      OOE-ARIN
IsRole:         N
LastName:       Esene
FirstName:      Ocee
Street:         1200 First Street,
Street:         N.E.
City:           Washington
State/Prov:     DC
Country:        US
PostalCode:     20002
RegDate:        2012-03-07
Updated:        2022-01-07
OfficePhone:    +1-202-731-7789
MobilePhone:    +1-202-460-8777
Mailbox:        [email protected]
Source:         ARIN

Nearby Ranges

BGP prefixes that overlap with 166.0.0.0/8

Range	ASN	Company	Num of IPs
166.80.0.0/16	AS16509	Amazon.com, Inc.	65,536
166.87.0.0/16	AS5080	Saudi Arabian Oil Company	65,536
166.211.0.0/16	AS6167	Verizon Business	65,536
166.56.0.0/16	AS3371	Verizon Business	65,536
166.69.0.0/16	AS19773	Motorola MNIC	65,536
166.93.0.0/16	AS26914	Synoptek, LLC	65,536
166.20.0.0/16	AS243	L3Harris Technologies, Inc.	65,536
166.58.0.0/16	AS3377	Verizon Business	65,536
166.58.0.0/16	AS3372	Verizon Business	65,536
166.74.0.0/16	AS16509	Amazon.com, Inc.	65,536
166.117.0.0/16	AS16509	Amazon.com, Inc.	65,536
166.84.0.0/16	AS2033	Panix	65,536
166.19.0.0/16	AS33425	CoreWeave, Inc	65,536
166.92.0.0/16	AS16509	Amazon.com, Inc.	65,536
166.104.0.0/16	AS9321	Hanyang University	65,536
166.100.0.0/16	AS2687	AT&T Japan K.K.	65,536
166.211.0.0/16	AS22394	Verizon Business	65,536
166.238.0.0/16	AS26611	COMUNICACIÓN CELULAR S.A. COMCEL S.A.	65,536
166.90.0.0/16	AS3257	Level 3 Parent, LLC	65,536
166.90.0.0/16	AS3356	Level 3 Parent, LLC	65,536
166.56.0.0/16	AS3372	Verizon Business	65,536
166.58.0.0/16	AS3371	Verizon Business	65,536
166.99.0.0/16	AS11719	Eaton Corporation	65,536
166.94.0.0/16	AS3926	Fairfax County Government	65,536
166.89.0.0/16	AS13918	City of Tucson	65,536
166.123.0.0/16	AS13506	United States Department of the Treasury	65,536
166.111.0.0/16	AS4538	Tsinghua University	65,536
166.82.0.0/16	AS7029	Windstream Communications LLC	65,536
166.72.0.0/16	AS7018	AT&T Enterprises, LLC	65,536
166.102.0.0/16	AS7029	Windstream Communications LLC	65,536
166.122.0.0/16	AS6360	University of Hawaii	65,536
166.70.0.0/16	AS6315	XMission, L.C.	65,536
166.114.128.0/17	AS6568	EMPRESA NACIONAL DE TELECOMUNICACIONES SOCIEDAD ANONIMA	32,768
166.49.128.0/17	AS5400	communications networking services Private Unlimited Company	32,768
166.48.0.0/17	AS396338	Altima Telecom	32,768
166.49.0.0/17	AS3561	CenturyLink Communications, LLC	32,768
166.62.128.0/17	AS5769	Videotron Ltee	32,768
166.113.64.0/18	AS53449	OEC Fiber	16,384
166.108.128.0/18	AS35077	Netwo SAS	16,384
166.114.64.0/18	AS6568	EMPRESA NACIONAL DE TELECOMUNICACIONES SOCIEDAD ANONIMA	16,384
166.114.32.0/19	AS6568	EMPRESA NACIONAL DE TELECOMUNICACIONES SOCIEDAD ANONIMA	8,192
166.63.160.0/19	AS1273	Vodafone Americas	8,192
166.63.128.0/19	AS3561	CenturyLink Communications, LLC	8,192
166.113.32.0/19	AS13370	Ziply Fiber	8,192
166.113.0.0/19	AS19870	Cherry Creek School District #5	8,192
166.63.192.0/19	AS1273	Vodafone Americas	8,192
166.108.0.0/19	AS16509	Amazon.com, Inc.	8,192
166.93.0.0/20	AS26914	Synoptek Pittsford DC	4,096

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

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

IP Address	ASN	Details
166.91.1.25	AS33084 DC-Net	`2.10ms` from Ashburn, US
166.91.10.145	AS33084 DC-Net	`2.18ms` from Ashburn, US
166.91.248.11	AS33084 DC-Net	`1.76ms` from Ashburn, US
166.91.253.11	AS14072 Government of the District of Columbia	`1.97ms` from Ashburn, US
166.91.11.49	AS33084 DC-Net	`2.02ms` 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
40.117.137.224	AS8075 Microsoft Corporation	`0.50ms` from Ashburn, US
125.59.11.208	AS9908 HK Cable TV Ltd	`1.24ms` from Hong Kong, HK
24.243.12.144	AS11427 Charter Communications Inc	`10.71ms` from Houston, US
148.71.236.208	AS12353 Vodafone Portugal	`7.11ms` from Lisbon, PT
122.169.22.80	AS24560 Bharti Airtel Ltd., Telemedia Services	`2.28ms` from Lohogaon, IN
84.127.87.160	AS6739 VODAFONE ONO, S.A.	`4.44ms` from Madrid, ES
95.232.202.64	AS3269 Telecom Italia S.p.A.	`5.81ms` from Naples, IT
49.194.15.240	AS4804 Microplex PTY LTD	`2.37ms` from Perth, AU
3.238.87.160	AS14618 Amazon.com, Inc.	`0.39ms` from Reston, US
152.237.245.64	AS7738 V tal	`3.72ms` from Rio de Janeiro, BR
64.114.34.16	AS852 TELUS Communications Inc.	`4.02ms` from Seattle, US
2.84.8.144	AS6799 Ote SA (Hellenic Telecommunications Organisation)	`1.37ms` from Athens, GR
5.59.74.0	AS207717 Icatel Network S.L.	`0.32ms` from Barcelona, ES
178.41.235.64	AS6855 Slovak Telekom, a.s.	`1.76ms` from Bratislava, SK
41.250.7.0	AS36903 Office National des Postes et Telecommunications ONPT (Maroc Telecom) / IAM	`2.99ms` from Casablanca, MA
118.119.200.176	AS4134 CHINANET-BACKBONE	`5.96ms` from Chengdu, CN
171.241.52.224	AS7552 Viettel Group	`1.09ms` from Hanoi, VN
97.94.122.80	AS20115 Charter Communications LLC	`3.22ms` from Los Angeles, US
93.93.22.80	AS34758 Axera SpA	`5.17ms` from Milan, IT
122.196.102.128	AS9617 JCOM Co., Ltd.	`14.60ms` from Osaka, JP
51.45.56.176	AS16509 Amazon.com, Inc.	`0.13ms` from Paris, FR
190.22.229.192	AS7418 TELEFÓNICA CHILE S.A.	`2.97ms` from Santiago, CL
98.10.35.160	AS11351 Charter Communications Inc	`16.90ms` from Secaucus, US
60.121.34.128	AS17676 SoftBank Corp.	`3.34ms` from Tokyo, JP
14.160.253.96	AS45899 VNPT Corp	`4.23ms` from Hanoi, VN

Traceroute

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

traceroute -a -n -q1 -f4 -m8 166.91.238.225

traceroute to 166.91.238.225 (166.91.238.225): 8 hops max, 52 byte packets

4 [AS3356] 4.69.220.26 60.43 ms

5 [AS3356] 4.79.23.14 61.458 ms

6 *

7 *

8 *

Measurement taken from

IPinfo ProbeNet in Fremont, US

On December 14th 2025

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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