66.18.104.0/24

AS13649 · Flexential Colorado Corp.

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

Summary

Country	United States
Domain	amsurg.com
ASN	AS13649
Parent Range	66.18.96.0/19
Registry	ARIN
ID	RAF-66-18-104-0

WHOIS Details

NetHandle:      NET-66-18-104-0-1
OrgID:          C00831772
Parent:         NET-66-18-96-0-1
NetName:        RAF-66-18-104-0
NetRange:       66.18.104.0 - 66.18.104.255
NetType:        reassignment
RegDate:        2004-05-27
Updated:        2010-11-02
Source:         ARIN


OrgID:          C00831772
OrgName:        Amsurg
CanAllocate:    
Street:         20 Burton Hills Boulevard
Street:         Suite 500
City:           Nashville
State/Prov:     TN
Country:        US
PostalCode:     37215
RegDate:        2004-05-27
Updated:        2011-03-19
Source:         ARIN

Overlapping Ranges

BGP prefixes that contain 66.18.104.0/24

Range	ASN	Company	Num of IPs
66.18.96.0/19	AS13649	Flexential Corp.	8,192

Nearby Ranges

BGP prefixes that overlap with 66.18.0.0/16

Range	ASN	Company	Num of IPs
66.18.192.0/18	AS26546	FIBERNETICS CORPORATION	16,384
66.18.96.0/19	AS13649	Flexential Corp.	8,192
66.18.32.0/19	AS26827	EPB Fiber Optics	8,192
66.18.160.0/20	AS11711	TULAROSA COMMUNICATIONS, INC.	4,096
66.18.0.0/20	AS13767	DataBank Holdings, Ltd.	4,096
66.18.176.0/20	AS16564	Adamswells Internet	4,096
66.18.16.0/20	AS6547	DCT Technologies, Inc.	4,096
66.18.11.0/24	AS13767	Presage Solutions, LLC	256
66.18.95.0/24	AS206283	Sentech SOC Ltd	256
66.18.116.0/24	AS13649	PureWorks, Inc.	256
66.18.114.0/24	AS13649	Rivals.com	256
66.18.10.0/24	AS13767	SEWELL AUTOMOTIVE COMPANIES	256

Hosted domains

There are 7 domain names hosted across 6 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
66.18.104.15	nationalsurgicalcare.com	2
66.18.104.200	amsurgemail.com	1
66.18.104.36	amsurgonline.com	1
66.18.104.22	phishingedu.com	1
66.18.104.249	amsurg2k.com	1
66.18.104.17	amsurgadmin.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

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

IP Address	ASN	Details
66.18.104.116	AS13649 Flexential Colorado Corp.	`9.67ms` from Atlanta, 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
48.209.35.200	AS8075 Microsoft Corporation	`0.23ms` from Amsterdam, NL
73.20.176.8	AS7922 Comcast Cable Communications, LLC	`14.23ms` from Atlanta, US
150.240.84.8	AS36351 IBM Cloud	`1.48ms` from Dallas, US
115.73.228.216	AS7552 Viettel Group	`1.42ms` from Ho Chi Minh City, VN
95.234.123.120	AS3269 Telecom Italia S.p.A.	`5.86ms` from Milan, IT
34.34.113.56	AS396982 Google LLC	`0.13ms` from Oudeschip, NL
49.22.223.88	AS4766 Korea Telecom	`8.67ms` from Seoul, KR
36.55.32.104	AS10013 FreeBit Co.,Ltd.	`7.58ms` from Tokyo, JP
83.188.89.72	AS1257 Tele2 Sverige AB	`15.13ms` from Vilnius, LT
34.206.143.184	AS14618 Amazon.com, Inc.	`0.49ms` from Ashburn, US
172.204.8.8	AS8075 Microsoft Corporation	`0.41ms` from Auckland, NZ
73.89.12.8	AS7922 Comcast Cable Communications, LLC	`6.25ms` from Boston, US
182.181.223.136	AS17557 Pakistan Telecommunication Company Limited	`9.92ms` from Islamabad, PK
91.142.155.104	AS41789 LLC Teledyne Systems Limited	`10.21ms` from Khabarovsk, RU
81.61.157.168	AS6739 VODAFONE ONO, S.A.	`14.53ms` from Madrid, ES
151.71.155.200	AS1267 WIND TRE S.P.A.	`7.28ms` from Milan, IT
216.182.181.8	AS11320 LightEdge Solutions	`4.13ms` from Monticello, US
66.111.7.8	AS11403 NYI	`0.51ms` from New York City, US
74.89.218.56	AS6128 Cablevision Systems Corp.	`2.10ms` from Newark, US
180.29.51.72	AS4713 NTT DOCOMO BUSINESS,Inc.	`2.44ms` from Osaka, JP
39.75.23.40	AS4837 CHINA UNICOM China169 Backbone	`4.92ms` from Qingdao, CN
34.106.157.200	AS396982 Google LLC	`0.11ms` from Salt Lake City, US
73.221.9.24	AS7922 Comcast Cable Communications, LLC	`14.52ms` from Seattle, US
99.249.37.232	AS812 Rogers Communications Canada Inc.	`5.65ms` from Toronto, CA
88.119.151.104	AS8764 Telia Lietuva, AB	`0.80ms` from Vilnius, LT

Traceroute

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

traceroute -a -n -q1 -f2 66.18.104.111

traceroute to 66.18.104.111 (66.18.104.111): 64 hops max, 52 byte packets

2 [AS3257] 66.171.224.25 0.395 ms

3 [AS3257] 89.149.141.94 11.065 ms

4 *

5 *

6 *

7 [AS13649] 66.51.8.2 9.936 ms

8 [AS13649] 148.66.238.48 10.105 ms

9 [AS13649] 148.66.238.23 10.41 ms

10 [AS13649] 148.66.237.242 10.254 ms

11 [AS13649] 66.18.104.111 11.228 ms

Measurement taken from

IPinfo ProbeNet in Atlanta, US

On March 13th 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.

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