Autonomous System details

AS151847

Fastmail Pty Ltd  ·  fastmail.com

Australia

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AS151847 – Fastmail Pty Ltd

Field Value
Country Australia
Website fastmail.com
Hosted domains 54,955
IPv4 addresses 512
IPv6 addresses 1,208,925,819,614,629,174,706,176
ASN type Hosting
Registry apnic
Allocated 2 years ago on Oct 06, 2023
Updated 4 months ago on Nov 05, 2025

IP Ranges

Netblock Company Num of IPs
103.168.172.0/24 Fastmail Pty Ltd t/a Fastmail 256
202.12.124.0/24 Fastmail Pty Ltd 256
Netblock Company
2001:df7:1680::/48 Fastmail Pty Ltd
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WHOIS Details

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                                                ASHandle:       AS151847
                                                OrgID:          AS151847
                                                ASName:         AS151847
                                                ASNumber:       AS151847
                                                RegDate:        0000-00-00
                                                Updated:        0000-00-00
                                                TechHandle:     AA00-AAAA
                                                Source:         AAAA
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Hosted Domains

There are 54,955 domain names hosted across 34 IP addresses on this ASN.

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IP Address Domain Domains on this IP
103.168.172.37 ██████████ 51,855
103.168.172.52 ██████████ 49,245
103.168.172.65 ██████████ 162
103.168.172.39 ██████████ 55
103.168.172.54 ██████████ 47
103.168.172.29 ██████████ 13
103.168.172.45 ████████ 12
103.168.172.60 ████████ 12
103.168.172.62 ██████████ 11
103.168.172.47 ██████████ 11

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Peers

There are 3 peers for this ASN.

Peers Name
AS13335 Cloudflare, Inc.
AS1828 Unitas Global
AS6939 Hurricane Electric LLC
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Upstreams

There are 3 upstreams for this ASN.

upstreams Name
AS13335 Cloudflare, Inc.
AS1828 Unitas Global
AS6939 Hurricane Electric LLC
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Downstreams

There are no downstreams for this ASN.

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ASN API & Database

Pingable IPs

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

IP Address ASN Details
103.168.172.254 AS151847 Fastmail Pty Ltd 0.36ms from Philadelphia, US
202.12.124.241 AS151847 Fastmail Pty Ltd 0.20ms from St. Louis, US
2001:df7:1680::1 AS151847 Fastmail Pty Ltd 3.08ms from New York City, 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
47.95.182.183 AS37963 Hangzhou Alibaba Advertising Co.,Ltd. 1.50ms from Beijing, CN
54.70.18.55 AS16509 Amazon.com, Inc. 0.12ms from Boardman, US
35.239.24.39 AS396982 Google LLC 0.39ms from Council Bluffs, US
52.209.115.151 AS16509 Amazon.com, Inc. 0.21ms from Dublin, IE
38.120.52.7 AS174 Cogent Communications, LLC 0.60ms from Edmonton, CA
101.188.86.247 AS1221 Telstra Limited 1.49ms from Melbourne, AU
68.187.101.71 AS20115 Charter Communications LLC 13.94ms from Minneapolis, US
71.168.154.39 AS701 Verizon Business 3.37ms from New York City, US
92.202.76.247 AS2527 Sony Network Communications Inc. 4.41ms from Osaka, JP
54.241.31.71 AS16509 Amazon.com, Inc. 0.16ms from San Jose, US
14.52.50.151 AS4766 Korea Telecom 1.22ms from Seoul, KR
159.223.38.247 AS14061 DigitalOcean, LLC 0.20ms from Singapore, SG
106.37.203.151 AS4847 China Networks Inter-Exchange 2.77ms from Tianjin, CN
14.14.12.247 AS131927 TV Matsumoto Cablevision 12.43ms from Tokyo, JP
3.113.18.23 AS16509 Amazon.com, Inc. 0.96ms from Tokyo, JP
189.15.58.135 AS53006 ALGAR TELECOM S/A 5.26ms from Uberlandia, BR
89.229.241.183 AS21021 Multimedia Polska Sp. z o.o. 8.97ms from Warsaw, PL
20.232.129.151 AS8075 Microsoft Corporation 0.48ms from Ashburn, US
162.216.144.215 AS13760 Uniti Fiber Holdings Inc. 6.54ms from Atlanta, US
140.143.234.55 AS45090 Shenzhen Tencent Computer Systems Company Limited 1.91ms from Beijing, CN
101.72.95.119 AS4837 CHINA UNICOM China169 Backbone 9.04ms from Beijing, CN
69.76.207.215 AS11427 Charter Communications Inc 12.57ms from Dallas, US
67.190.181.199 AS7922 Comcast Cable Communications, LLC 2.84ms from Denver, US
204.171.51.71 AS14088 Westmoreland Intermediate Unit 11.53ms from Detroit, US
217.248.246.71 AS3320 Deutsche Telekom AG 8.04ms from Frankfurt am Main, DE

Traceroute

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

$
traceroute -a -n -q1 -f5 202.12.124.141
traceroute to 202.12.124.141 (202.12.124.141): 64 hops max, 52 byte packets
Measurement taken from IPinfo ProbeNet in St. Louis, US
On

Related Networks

What is an ASN?

Autonomous System Numbers (ASNs) are assigned to entities such as Internet Service Providers and other large organizations that control blocks of IP addresses. This network page, and the organization field that's shown on the main IP address information page and also returned in the geolocation API are based on the ASN.

The ASN details will often correspond to the IP address owner, but for smaller organizations it may be that organization's parent, or their ISP. Find out more about AS151847 at robtex.

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