IP address 216.123.71.235

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Overview

LocationCity, region and country where this IP is located.
Denver, Colorado, US
ASNThe autonomous system that announces this IP on the internet.
AS15290 — Zayo Bandwidth
TimezoneThe IANA time zone at this IP's location.
America/Denver
NetworkThe routed network block (CIDR) that contains this IP.
216.123.71.0/24
CompanyThe organization this IP is assigned to.
Zayo Group, LLC
Abuse contactWhere to report spam, attacks or other misuse from this IP.
abuse@zayo.com

Reported location

Denver

Colorado, United States (US)

Powered byIP Geolocation API

City
Denver
District / county
Union Station
State / province
Colorado
Country
United States
Postal code
80202-1729
Coordinates
39.75044, -105.00349

United States

39.75044, -105.00349

© OpenStreetMap

Threat score

0/100 Low risk

Powered byIP Security API

Flags detected

  • AnonymousTraffic from this IP hides its real origin (VPN, proxy or Tor).Not Detected
  • Known attackerThis IP has been seen in attacks such as brute force, scanning or exploits.Not Detected
  • SpamThis IP has been reported for sending spam.Not Detected
  • TorThis IP is a Tor exit node.Not Detected
  • ProxyThis IP is an open, public or commercial proxy.Not Detected
  • VPNThis IP belongs to a VPN service.Not Detected
  • BotAutomated traffic such as crawlers or scrapers comes from this IP.Not Detected
  • Cloud providerThis IP belongs to a cloud or hosting provider's data center.Not Detected
  • Residential proxyA home or mobile connection resold as a proxy exit.Not Detected
  • Corporate gatewayA shared egress gateway used by a company's network.Not Detected
  • RelayThis IP is a relay exit, such as iCloud Private Relay.Not Detected

No anonymity signals

This IP is not flagged as a VPN, proxy, relay, bot, cloud provider or corporate gateway.

Abuse contact

Abuse

abuse@zayo.com

Powered byIP Abuse Contact API

Name
Abuse
Organization
Zayo Group - Abuse
Network
216.123.0.0/17
Country
US
Kind
group
Address
1805 29th Street, Suite 2050, Boulder, CO, 80301, United States
Emails
abuse@zayo.com
Phone numbers
+1 866-236-2824

Autonomous system

AS15290

Zayo Bandwidth

Powered byASN Records

ASN
AS15290
Country
US
Domain
zayo.com
Regional registry
ARIN
Organization
Zayo Bandwidth
Type
Internet service provider (ISP)
Allocated on
2000-04-13

Organization

Zayo Bandwidth

Associated company

Zayo Group, LLC

ISP · zayo.com

Powered byIP Geolocation API

Name
Zayo Group, LLC
Type
Internet service provider (ISP)
Domain
zayo.com

Network route

216.123.71.0/24

Powered byIP Geolocation API

Hostname
216.123.71.235
Route
216.123.71.0/24
Connection type
—
Anycast
no
CDN
no
CDN provider
—

Time zone

America/Denver

2026-10-07 16:53

Powered byTime Zone API

Offset from UTC
-7.0
Standard time zone
Mountain Standard Time
Standard abbreviation
MST
Daylight saving time
true
DST savings (hours)
1
Observing DST now
true
Denver

United States

39.75044, -105.00349

User agent string

Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)

Powered byUser Agent API

  • BrowserClaudeBotver. 1.0
  • EngineClaudeBotver. 1.0
  • Operating systemCloud
  • DeviceRobotAnthropic ClaudeBot
  • ArchitectureUnknown
Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)
Response 
{
  "ip" : "216.123.71.235",
  "hostname" : "216.123.71.235",
  "location" : {
    "district" : "Union Station",
    "city" : "Denver",
    "locality" : "Denver",
    "zipcode" : "80202-1729",
    "latitude" : "39.75044",
    "longitude" : "-105.00349",
    "continent_code" : "NA",
    "continent_name" : "North America",
    "country_code2" : "US",
    "country_code3" : "USA",
    "country_name" : "United States",
    "country_name_official" : "United States of America",
    "country_capital" : "Washington, D.C.",
    "state_prov" : "Colorado",
    "state_code" : "US-CO",
    "accuracy_radius" : "27.601",
    "confidence" : "low",
    "dma_code" : "751",
    "is_eu" : false,
    "country_flag" : "https://ipgeolocation.io/static/flags/us_64.png",
    "geoname_id" : "7289827",
    "country_emoji" : "🇺🇸"
  },
  "country_metadata" : {
    "tld" : ".us",
    "languages" : [ "en-US", "es-US", "haw", "fr" ],
    "calling_code" : "+1"
  },
  "network" : {
    "route" : "216.123.71.0/24",
    "connection_type" : "",
    "is_anycast" : false,
    "is_cdn" : false,
    "cdn_provider_name" : ""
  },
  "currency" : {
    "code" : "USD",
    "name" : "US Dollar",
    "symbol" : "$"
  },
  "asn" : {
    "organization" : "Zayo Bandwidth",
    "country" : "US",
    "type" : "ISP",
    "domain" : "zayo.com",
    "rir" : "ARIN",
    "as_number" : "AS15290",
    "date_allocated" : "2000-04-13"
  },
  "company" : {
    "name" : "Zayo Group, LLC",
    "type" : "ISP",
    "domain" : "zayo.com"
  },
  "security" : {
    "threat_score" : 0,
    "is_tor" : false,
    "is_proxy" : false,
    "proxy_provider_names" : [ ],
    "proxy_confidence_score" : 0,
    "proxy_last_seen" : "",
    "is_residential_proxy" : false,
    "is_vpn" : false,
    "vpn_provider_names" : [ ],
    "vpn_confidence_score" : 0,
    "vpn_last_seen" : "",
    "is_relay" : false,
    "relay_provider_name" : "",
    "is_anonymous" : false,
    "is_known_attacker" : false,
    "is_bot" : false,
    "bot_confidence_score" : 0,
    "bot_operator_name" : "",
    "bot_type" : "",
    "is_known_good_bot" : false,
    "bot_last_seen" : "",
    "is_spam" : false,
    "is_cloud_provider" : false,
    "cloud_provider_name" : "",
    "is_corporate_gateway" : false,
    "corporate_gateway_type" : "",
    "corporate_gateway_provider_name" : ""
  },
  "abuse" : {
    "route" : "216.123.0.0/17",
    "country" : "US",
    "name" : "Abuse",
    "organization" : "Zayo Group - Abuse",
    "kind" : "group",
    "address" : "1805 29th Street, Suite 2050, Boulder, CO, 80301, United States",
    "emails" : [ "abuse@zayo.com" ],
    "phone_numbers" : [ "+18662362824" ]
  },
  "time_zone" : {
    "name" : "America/Denver",
    "offset" : -7.0,
    "offset_with_dst" : -6.0,
    "current_time" : "2026-10-07 16:53:29.443-0600",
    "current_time_unix" : 1.791413609443E9,
    "current_tz_abbreviation" : "MDT",
    "current_tz_full_name" : "Mountain Daylight Time",
    "standard_tz_abbreviation" : "MST",
    "standard_tz_full_name" : "Mountain Standard Time",
    "is_dst" : true,
    "dst_savings" : 1,
    "dst_exists" : true,
    "dst_tz_abbreviation" : "MDT",
    "dst_tz_full_name" : "Mountain Daylight Time",
    "dst_start" : {
      "utc_time" : "2026-03-08 TIME 09:00",
      "duration" : "+1.00H",
      "gap" : true,
      "date_time_after" : "2026-03-08 TIME 03:00",
      "date_time_before" : "2026-03-08 TIME 02:00",
      "overlap" : false
    },
    "dst_end" : {
      "utc_time" : "2026-11-01 TIME 08:00",
      "duration" : "-1.00H",
      "gap" : false,
      "date_time_after" : "2026-11-01 TIME 01:00",
      "date_time_before" : "2026-11-01 TIME 02:00",
      "overlap" : true
    }
  },
  "user_agent" : {
    "user_agent_string" : "Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)",
    "name" : "ClaudeBot",
    "type" : "Robot",
    "version" : "1.0",
    "version_major" : "1",
    "device" : {
      "name" : "Anthropic ClaudeBot",
      "type" : "Robot",
      "brand" : "Anthropic",
      "cpu" : "Unknown"
    },
    "engine" : {
      "name" : "ClaudeBot",
      "type" : "Robot",
      "version" : "1.0",
      "version_major" : "1"
    },
    "operating_system" : {
      "name" : "Cloud",
      "type" : "Cloud",
      "version" : "??",
      "build" : "??",
      "version_major" : "??"
    }
  }
}

Evaluation checklist

Behind the address

What the data tells you about 216.123.71.235.

Who operates 216.123.71.235?

Zayo Bandwidth operates AS15290, the autonomous system announcing this address. The associated company is Zayo Group, LLC; the reported network is 216.123.71.0/24.

View ASN API

Why can its location change?

IP location comes from routing, registry and measurement data. It can shift when Zayo Bandwidth reassigns the block, so treat Denver as an estimate, not a fixed point.

View IP Location API

How do I report abuse?

The listed abuse contact is Abuse. Include the source IP, timestamps with a timezone, and relevant logs so the contact can investigate.

View Abuse Contact API

For developers

The same data. One API request.

Add IP location, network, and security data to your application.

cURL 
curl --get 'https://api.ipgeolocation.io/v3/ipgeo' \
  --data-urlencode 'apiKey=YOUR_API_KEY' \
  --data-urlencode 'ip=216.123.71.235' \
  --data-urlencode 'include=*'
Response 
{ "ip": "216.123.71.235" }

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Frequently Asked Questions

The latest lookup maps 216.123.71.235 to Denver, Colorado, United States. Geolocation is approximate and should be treated as city/region level guidance.
This page currently shows ASN AS15290 and company Zayo Group, LLC. ASN and company attribution can change as routing and ownership records are updated.
The reported connection type for 216.123.71.235 is not published. This value helps with traffic analytics, abuse prevention, and policy routing decisions.
The current timezone record for 216.123.71.235 is America/Denver. Teams commonly use this signal to localize timestamps, notifications, and fraud models.
IP intelligence is dynamic. Routing, ASN ownership, company names, and security posture can change over time, so this page should be treated as a point-in-time lookup for 216.123.71.235.
Use the JSON response on this page for testing, then move to production API workflows with structured fields for geolocation, network, ASN, security, abuse, and timezone data. Read documentation.