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ASN information of 40.77.167.136
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40.77.167.136
ASN Information
# # ARIN WHOIS data and services are subject to the Terms of Use # available at: https://www.arin.net/resources/registry/whois/tou/ # # If you see inaccuracies in the results, please report at # https://www.arin.net/resources/registry/whois/inaccuracy_reporting/ # # Copyright 1997-2026, American Registry for Internet Numbers, Ltd. # # # Query terms are ambiguous. The query is assumed to be: # "n 40.77.167.136" # # Use "?" to get help. # NetRange: 40.74.0.0 - 40.125.127.255 CIDR: 40.125.0.0/17, 40.76.0.0/14, 40.124.0.0/16, 40.96.0.0/12, 40.74.0.0/15, 40.120.0.0/14, 40.112.0.0/13, 40.80.0.0/12 NetName: MSFT NetHandle: NET-40-74-0-0-1 Parent: NET40 (NET-40-0-0-0-0) NetType: Direct Allocation OriginAS: Organization: Microsoft Corporation (MSFT) RegDate: 2015-02-23 Updated: 2021-12-14 Ref: https://rdap.arin.net/registry/ip/40.74.0.0 OrgName: Microsoft Corporation OrgId: MSFT Address: One Microsoft Way City: Redmond StateProv: WA PostalCode: 98052 Country: US RegDate: 1998-07-10 Updated: 2025-06-10 Comment: To report suspected security issues specific to traffic emanating from Microsoft online services, including the distribution of malicious content or other illicit or illegal material through a Microsoft online service, please submit reports to: Comment: * https://cert.microsoft.com. Comment: Comment: For SPAM and other abuse issues, such as Microsoft Accounts, please contact: Comment: * abuse@microsoft.com. Comment: Comment: To report security vulnerabilities in Microsoft products and services, please contact: Comment: * secure@microsoft.com. Comment: Comment: For legal and law enforcement-related requests, please contact: Comment: * msndcc@microsoft.com Comment: Comment: For routing, peering or DNS issues, please Comment: contact: Comment: * IOC@microsoft.com Ref: https://rdap.arin.net/registry/entity/MSFT OrgTechHandle: BEDAR6-ARIN OrgTechName: Bedard, Dawn OrgTechPhone: +1-425-538-6637 OrgTechEmail: dabedard@microsoft.com OrgTechRef: https://rdap.arin.net/registry/entity/BEDAR6-ARIN OrgTechHandle: MRPD-ARIN OrgTechName: Microsoft Routing, Peering, and DNS OrgTechPhone: +1-425-882-8080 OrgTechEmail: IOC@microsoft.com OrgTechRef: https://rdap.arin.net/registry/entity/MRPD-ARIN OrgTechHandle: IPHOS5-ARIN OrgTechName: IPHostmaster, IPHostmaster OrgTechPhone: +1-425-538-6637 OrgTechEmail: iphostmaster@microsoft.com OrgTechRef: https://rdap.arin.net/registry/entity/IPHOS5-ARIN OrgTechHandle: SINGH683-ARIN OrgTechName: Singh, Prachi OrgTechPhone: +1-425-707-5601 OrgTechEmail: pracsin@microsoft.com OrgTechRef: https://rdap.arin.net/registry/entity/SINGH683-ARIN OrgRoutingHandle: CHATU3-ARIN OrgRoutingName: Chaturmohta, Somesh OrgRoutingPhone: +1-425-882-8080 OrgRoutingEmail: someshch@microsoft.com OrgRoutingRef: https://rdap.arin.net/registry/entity/CHATU3-ARIN OrgAbuseHandle: MAC74-ARIN OrgAbuseName: Microsoft Abuse Contact OrgAbusePhone: +1-425-882-8080 OrgAbuseEmail: abuse@microsoft.com OrgAbuseRef: https://rdap.arin.net/registry/entity/MAC74-ARIN # # ARIN WHOIS data and services are subject to the Terms of Use # available at: https://www.arin.net/resources/registry/whois/tou/ # # If you see inaccuracies in the results, please report at # https://www.arin.net/resources/registry/whois/inaccuracy_reporting/ # # Copyright 1997-2026, American Registry for Internet Numbers, Ltd. #
ASN Lookup
- Check Autonomous System Number Information
Use our ASN Lookup tool to quickly find detailed information about an Autonomous System Number (ASN), organization, CIDR blocks, or registered IP addresses (IPv4 and IPv6). This tool helps identify the network owner, internet service provider (ISP), and infrastructure behind an autonomous system.
ASN lookups are commonly used by network engineers, cybersecurity professionals, and researchers to analyze network ownership, investigate routing paths, and understand internet infrastructure.
What Is an ASN (Autonomous System Number)?
An Autonomous System (AS) is a collection of IP networks managed by a single organization that follows a common routing policy. Each autonomous system is identified by a unique Autonomous System Number (ASN).
ASN numbers are assigned by regional internet registries under the coordination of the Internet Assigned Numbers Authority (IANA). These identifiers allow networks to exchange routing information using the Border Gateway Protocol (BGP), which powers global internet connectivity.
Large organizations such as internet service providers, cloud platforms, and data centers operate their own autonomous systems.
What Information an ASN Lookup Can Provide
Our ASN lookup tool allows you to search for detailed information about an autonomous system and its associated networks.
The results may include:
- Autonomous System Number (ASN)
- Organization or network operator
- Country where the ASN is registered
- Internet Service Provider (ISP)
- Associated IP address ranges
- CIDR blocks linked to the ASN
- BGP routing information
This information helps identify the network infrastructure behind IP addresses and internet routing paths.
How to Use the ASN Lookup Tool
Running an ASN lookup is simple and takes only a few seconds:
- Enter the ASN number, organization name, CIDR block, or IP address.
- Click the Check button to run the ASN lookup.
- Review the results showing the autonomous system and associated network information.
The system will query network databases and return information about the autonomous system responsible for the IP space.
How to Find an ASN Number
If you do not already know the ASN number, it can often be identified using networking tools or by searching for the organization associated with an IP address.
Common ways to discover an ASN include:
- Using network diagnostic tools such as traceroute
- Performing an IP address lookup
- Searching by ISP or organization name
- Analyzing BGP routing information
Once you have the ASN number, you can use this tool to view detailed information about the autonomous system.
Why Use an ASN Lookup?
ASN lookup tools are widely used to analyze internet routing and network infrastructure. They provide valuable insights into how traffic moves across the internet.
- Troubleshoot network connectivity issues
- Identify organizations behind IP address ranges
- Analyze internet routing paths
- Investigate potential security threats
- Monitor network performance and infrastructure
Understanding ASN data helps administrators and researchers better understand the structure of global networks.
Lookup ASN and Network Information Now
Use our ASN Lookup tool to quickly search for information about an autonomous system, organization, or IP address range. Enter an ASN number, IP address, or CIDR block to view detailed network information.
This tool helps you explore internet infrastructure and analyze the networks responsible for routing traffic worldwide.
Frequently Asked Questions
What is an ASN?
An ASN (Autonomous System Number) is a unique identifier assigned to a group of IP networks managed by a single organization and used for routing internet traffic.
Who assigns ASN numbers?
ASN numbers are assigned by regional internet registries under the coordination of the Internet Assigned Numbers Authority (IANA).
What is an Autonomous System?
An Autonomous System is a network or group of networks operated by a single entity that shares a common routing policy.
Why are ASN lookups useful?
ASN lookups help identify the organization behind IP addresses, analyze internet routing paths, troubleshoot network issues, and investigate network infrastructure.
