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ASN Lookup Tool
AS18830 HMH-18830

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ASN Extended Info API & BGP Active Prefixes API
ASN Details
ASN
AS18830
Organisation
Houghton Mifflin Harcourt Publishing Company
Name
HMH-18830
Total IPv4 Addresses
1024
Total IPv4 Prefixes
3
Total IPv6 Prefixes
0
Total IPv4 Bogon Prefixes
0
Total IPv6 Bogon Prefixes
0
IPv4 Space Rank
#42,120 out of 77,368
Registry
Arin
Registered Country
US flag US
Registered Country Name
United States of America (the)
Registered Date
2007-12-19
Registration Last Change
2015-12-23
Receiving From

The list of active Autonomous Systems (ASs) which send traffic to that ASN.

ASN
Organisation
AS14742
US flagUnitas Global
AS19024
US flagUnitas Global
IPv4 Active Prefixes

This provides the list of IPv4 address space routes/prefixes currently announced on Border Gateway Protocol (BGP).

Prefix208.85.124.0/24
Range From208.85.124.0
Range To208.85.124.255
Prefix208.85.125.0/24
Range From208.85.125.0
Range To208.85.125.255
Prefix208.85.126.0/23
Range From208.85.126.0
Range To208.85.127.255
Autonomous System (AS) is a network (or collection of networks) that are all managed and supervised by a single entity or organisation. This tool provides a comprehensive ownership and connectivity report for any given AS number.