Autonomous System details

AS21965

Highmark Inc · highmark.com

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AS21965 – Highmark Inc

Field	Value
Country	United States
Website	highmark.com
Hosted domains	1,013
IPv4 addresses	5,632
IPv6 addresses	0
ASN type	Business
Registry	arin
Allocated	25 years ago on Jul 19, 2001
Updated	11 years ago on Oct 27, 2014

Netblock	Company	Num of IPs
157.154.3.0/24	Highmark Inc	256
157.154.4.0/24	Highmark Inc	256
157.154.5.0/24	Highmark Inc	256
157.154.6.0/24	Highmark Inc	256
157.154.7.0/24	Highmark Inc	256
157.154.8.0/24	Highmark Inc	256
157.154.11.0/24	Highmark Inc	256
157.154.14.0/24	Highmark Inc	256
157.154.20.0/24	Highmark Inc	256
167.164.3.0/24	Highmark Inc	256
167.164.4.0/24	Highmark Inc	256
167.164.5.0/24	Highmark Inc	256
167.164.6.0/24	Highmark Inc	256
167.164.7.0/24	Highmark Inc	256
167.164.8.0/24	Highmark Inc	256
167.164.11.0/24	Highmark Inc	256
167.164.14.0/24	Highmark Inc	256
167.164.20.0/24	Highmark Inc	256
192.152.123.0/24	Highmark Inc	256
199.190.160.0/24	Highmark Inc	256
199.190.163.0/24	Highmark Inc	256
199.190.164.0/24	Highmark Inc	256

There are no known IPv6 addresses belonging to this network

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WHOIS Details

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                                                ASHandle:       AS21965
                                                OrgID:          AS21965
                                                ASName:         AS21965
                                                ASNumber:       AS21965
                                                RegDate:        0000-00-00
                                                Updated:        0000-00-00
                                                TechHandle:     AA00-AAAA
                                                Source:         AAAA

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Hosted Domains

There are 1,013 domain names hosted across 68 IP addresses on this ASN.

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IP Address	Domain	Domains on this IP
157.154.4.237	██████████	659
167.164.4.237	██████████	652
157.154.4.100	██████████	282
167.164.4.100	██████████	280
167.164.4.224	██████████	139
157.154.4.224	██████████	113
167.164.4.104	██████████	17
157.154.4.151	██████████	14
167.164.4.75	██████████	14
157.154.4.104	██████████	14

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Peers

There are 7 peers for this ASN.

Peers	Name
AS15830	Equinix (EMEA) Acquisition Enterprises B.V.
AS22255	Allegheny Health Network
AS3356	Level 3 Parent, LLC
AS46887	Crown Castle Fiber LLC
AS6461	Zayo Bandwidth
AS7016	Comcast Cable Communications, LLC
AS7018	AT&T Enterprises, LLC

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ASN API & Database

Upstreams

There are 6 upstreams for this ASN.

upstreams	Name
AS15830	Equinix (EMEA) Acquisition Enterprises B.V.
AS3356	Level 3 Parent, LLC
AS46887	Crown Castle Fiber LLC
AS6461	Zayo Bandwidth
AS7016	Comcast Cable Communications, LLC
AS7018	AT&T Enterprises, LLC

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Downstreams

There is 1 peer for this ASN.

Downstreams	Name
AS22255	Allegheny Health Network

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ASN API & Database

Pingable IPs

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

IP Address	ASN	Details
199.190.164.1	AS21965 Highmark Inc	`1.11ms` from Ashburn, US
167.164.3.130	AS21965 Highmark Inc	`1.23ms` from Ashburn, US
157.154.3.201	AS21965 Highmark Inc	`4.19ms` from Philadelphia, US
199.190.160.11	AS21965 Highmark Inc	`0.53ms` 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
24.252.209.205	AS22773 Cox Communications Inc.	`5.33ms` from Ashburn, US
216.171.65.13	AS32098 Transtelco Inc	`5.82ms` from Ashburn, US
43.208.235.29	AS16509 Amazon.com, Inc.	`1.97ms` from Bangkok, TH
186.114.229.61	AS3816 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC	`10.51ms` from Bogota, CO
190.178.21.141	AS22927 Telefonica de Argentina	`2.27ms` from Buenos Aires, AR
181.15.50.29	AS7303 Telecom Argentina S.A.	`0.83ms` from Buenos Aires, AR
98.224.213.205	AS7922 Comcast Cable Communications, LLC	`10.65ms` from Chicago, US
52.51.251.141	AS16509 Amazon.com, Inc.	`0.22ms` from Dublin, IE
103.134.105.13	AS63497 PT. Arana Teknologi Indonesia	`2.01ms` from Jakarta, ID
74.51.139.61	AS29900 GLENWOOD TELEPHONE MEMBERSHIP CORPORATION	`7.58ms` from Lincoln, US
86.23.133.13	AS5089 Virgin Media Limited	`8.90ms` from London, GB
82.17.63.13	AS5089 Virgin Media Limited	`11.23ms` from London, GB
90.195.128.237	AS5607 Sky UK Limited	`1.59ms` from London, GB
80.46.195.109	AS13285 TalkTalk Communications Limited	`6.45ms` from Manchester, GB
199.84.159.253	AS3584 PubNIX, Inc.	`0.39ms` from Montreal, CA
65.94.127.29	AS577 Bell Canada	`3.90ms` from Montreal, CA
15.236.106.93	AS16509 Amazon.com, Inc.	`0.16ms` from Paris, FR
81.210.97.77	AS12741 Netia SA	`5.15ms` from Poznan, PL
27.234.84.205	AS4766 Korea Telecom	`2.51ms` from Seoul, KR
1.157.60.237	AS1221 Telstra Limited	`5.71ms` from Sydney, AU
52.198.80.125	AS16509 Amazon.com, Inc.	`0.20ms` from Tokyo, JP
20.107.98.205	AS8075 Microsoft Corporation	`0.23ms` from Amsterdam, NL
81.240.229.205	AS5432 Proximus NV	`2.41ms` from Brussels, BE
178.118.251.13	AS6848 Telenet BV	`4.33ms` from Brussels, BE
50.123.196.61	AS5650 Frontier Communications of America, Inc.	`11.52ms` from Chicago, US

Traceroute

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

traceroute -a -n -q1 167.164.3.131

traceroute to 167.164.3.131 (167.164.3.131): 64 hops max, 52 byte packets

1 [AS397423] 82.22.204.145 0.772 ms

2 [AS1299] 62.115.165.158 0.448 ms

3 [AS1299] 62.115.141.154 3.391 ms

4 [AS1299] 62.115.142.10 1.564 ms

5 [AS1299] 62.115.123.123 1.408 ms

6 [AS1299] 213.248.102.237 8.496 ms

7 [] 142.215.89.186 1.388 ms

8 [AS15830] 142.215.112.50 1.229 ms

9 [AS21965] 167.164.3.131 1.427 ms

Measurement taken from

IPinfo ProbeNet in Ashburn, US

On January 19th 2026

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What is an ASN?

Autonomous System Numbers (ASNs) are assigned to entities such as Internet Service Providers and other large organizations that control blocks of IP addresses. This network page, and the organization field that's shown on the main IP address information page and also returned in the geolocation API are based on the ASN.

The ASN details will often correspond to the IP address owner, but for smaller organizations it may be that organization's parent, or their ISP. Find out more about AS21965 at robtex.

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