208.21.37.0/24

AS54174 · BlueCross BlueShield of Tennessee

Need more data or want to access it via API or data downloads? Sign up to get free access

Summary

Country	United States
Domain	bcbst.com
ASN	AS54174
Registry	ARIN
ID	SPRINT-D01525

WHOIS Details

NetHandle:      NET-208-21-37-0-1
OrgID:          BCBS
Parent:         NET-208-0-0-0-1
NetName:        SPRINT-D01525
NetRange:       208.21.37.0 - 208.21.37.255
NetType:        reassignment
RegDate:        1997-04-10
Updated:        1997-04-10
TechHandle:     JM5459-ARIN
Source:         ARIN


OrgID:          BCBS
OrgName:        Blue Cross Blue Shield
CanAllocate:    
Street:         801 Pine Street
City:           Chattanooga
State/Prov:     TN
Country:        US
PostalCode:     37402
RegDate:        1997-04-10
Updated:        2011-09-24
OrgAdminHandle: CKN23-ARIN
OrgTechHandle:  CKN23-ARIN
OrgAbuseHandle: CKN23-ARIN
Source:         ARIN


POCHandle:      CKN23-ARIN
IsRole:         N
LastName:       No
FirstName:      Contact
Street:         123 Main St
City:           Anytown
State/Prov:     VA
Country:        US
PostalCode:     20151
RegDate:        2011-02-18
Updated:        2024-02-09
OfficePhone:    +1-800-555-1234
Mailbox:        nobody@example.com
Source:         ARIN


POCHandle:      JM5459-ARIN
IsRole:         N
LastName:       Morrow
FirstName:      Jason
Street:         Blue Cross Blue Shield of Tennessee
Street:         801 Pine Stree
City:           Chattanooga
State/Prov:     TN
Country:        US
PostalCode:     37402
RegDate:        1996-11-13
Updated:        2012-10-17
OfficePhone:    +1-423-752-8339
Mailbox:        jason_morrow@bcbst.com
Mailbox:        jmorrow@chattanooga.net
Source:         ARIN

Hosted domains

There are 22 domain names hosted across 5 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
208.21.37.75	bcbst.com	16
208.21.37.34	bcbst.com	6
208.21.37.79	tennesseehealth.com	1
208.21.37.152	bcbstexchange.com	1
208.21.37.26	gisbenefits.com	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

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

IP Address	ASN	Details
208.21.37.134	AS54174 BlueCross BlueShield of Tennessee	`47.23ms` from Dallas, 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
39.97.227.152	AS37963 Hangzhou Alibaba Advertising Co.,Ltd.	`1.95ms` from Beijing, CN
204.157.216.168	AS17069 Coop Telefonica Villa Gesell Ltda	`9.49ms` from Buenos Aires, AR
65.70.117.168	AS7018 AT&T Enterprises, LLC	`6.63ms` from Dallas, US
103.142.184.216	AS150774 EXABYTE LTD	`0.35ms` from Dhaka, BD
84.186.3.72	AS3320 Deutsche Telekom AG	`3.05ms` from Duesseldorf, DE
83.243.87.232	AS12586 GHOSTnet GmbH	`0.23ms` from Frankfurt am Main, DE
81.147.189.8	AS2856 British Telecommunications PLC	`5.11ms` from London, GB
99.93.68.40	AS7018 AT&T Enterprises, LLC	`5.42ms` from Miami, US
148.74.74.104	AS6128 Cablevision Systems Corp.	`6.07ms` from New York City, US
40.86.163.216	AS8075 Microsoft Corporation	`0.56ms` from San Jose, US
221.228.77.24	AS138950 Jiangsu Wuxi International IDC network	`6.50ms` from Shanghai, CN
60.65.54.56	AS17676 SoftBank Corp.	`3.07ms` from Tokyo, JP
185.106.97.72	AS44477 PQ HOSTING PLUS S.R.L.	`0.31ms` from Warsaw, PL
20.82.71.232	AS8075 Microsoft Corporation	`0.24ms` from Amsterdam, NL
43.166.224.72	AS132203 Tencent Building, Kejizhongyi Avenue	`0.36ms` from Ashburn, US
66.44.222.8	AS25853 Ellijay Telephone Company	`2.44ms` from Atlanta, US
5.197.0.8	AS57293 AG Telekom MMC.	`1.38ms` from Baku, AZ
87.185.174.184	AS3320 Deutsche Telekom AG	`1.74ms` from Berlin, DE
78.98.239.120	AS6855 Slovak Telekom, a.s.	`8.26ms` from Bratislava, SK
108.250.208.104	AS7018 AT&T Enterprises, LLC	`4.91ms` from Chicago, US
208.189.75.248	AS7018 AT&T Enterprises, LLC	`1.01ms` from Dallas, US
167.248.33.232	AS15108 Allo Communications LLC	`6.60ms` from Des Moines, US
13.41.140.56	AS16509 Amazon.com, Inc.	`0.14ms` from London, GB
78.196.112.104	AS12322 Free SAS	`1.35ms` from Paris, FR
3.226.171.120	AS14618 Amazon.com, Inc.	`0.20ms` from Reston, US

Traceroute

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

traceroute -a -n -q1 -f5 -m9 208.21.37.126

traceroute to 208.21.37.126 (208.21.37.126): 9 hops max, 52 byte packets

5 [AS32787] 2.21.116.160 1.493 ms

6 [AS32787] 23.45.19.118 52.648 ms

7 *

8 *

9 *

Measurement taken from

IPinfo ProbeNet in New York City, US

On August 28th 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.

An API built with users in mind: reliable, accurate, and easy-to-use

Discover why industry-leading companies around the globe love our data. IPinfo's accurate insights fuel use cases from cybersecurity, data enrichment, web personalization, and much more.

Get Started for Free Contact Sales