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 1,024
IPv6 addresses 1,208,925,819,614,629,200,000,000
ASN type Hosting
Registry apnic
Allocated 3 years ago on Oct 06, 2023
Updated 6 months ago on Nov 05, 2025

IP Ranges

Netblock Company Num of IPs
204.75.18.0/23 Fastmail 512
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 ██████████ 48,351
103.168.172.52 ██████████ 47,294
103.168.172.65 ██████████ 155
103.168.172.54 ██████████ 49
103.168.172.39 ██████████ 40
103.168.172.60 ████████ 12
103.168.172.45 ████████ 12
103.168.172.62 ██████████ 11
103.168.172.47 ██████████ 11
103.168.172.208 ██████████ 4

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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
103.168.172.14 AS151847 Fastmail Pty Ltd 0.43ms from Philadelphia, US
2001:df7:1680::1 AS151847 Fastmail Pty Ltd 3.19ms from Secaucus, US
202.12.124.146 AS151847 Fastmail Pty Ltd 0.20ms from St. Louis, 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
18.253.83.103 AS8987 Amazon Data Services Ireland Ltd 0.75ms from Columbus, US
3.72.162.135 AS16509 Amazon.com, Inc. 0.16ms from Frankfurt am Main, DE
121.37.210.119 AS55990 Huawei Cloud Service data center 1.92ms from Guangzhou, CN
88.250.89.55 AS9121 Turk Telekomunikasyon Anonim Sirketi 1.83ms from Istanbul, TR
2.26.169.215 AS40676 Psychz Networks 0.23ms from Los Angeles, US
108.208.121.55 AS7018 AT&T Enterprises, LLC 3.29ms from Los Angeles, US
77.51.249.135 AS25515 PJSC Rostelecom 1.69ms from Moscow, RU
111.72.87.7 AS4134 CHINANET BACKBONE 5.46ms from Nanchang, CN
153.181.61.167 AS4713 NTT DOCOMO BUSINESS,Inc. 3.54ms from Osaka, JP
45.156.248.23 AS200698 Globalhost d.o.o. 2.54ms from Sarajevo, BA
139.99.81.23 AS16276 OVH SAS 0.07ms from Singapore, SG
194.182.173.103 AS61098 Akenes SA 0.07ms from Vienna, AT
67.189.164.87 AS7922 Comcast Cable Communications, LLC 9.75ms from Boston, US
34.131.83.39 AS396982 Google LLC 0.10ms from Delhi, IN
52.142.119.39 AS8075 Microsoft Corporation 0.14ms from Dublin, IE
89.153.10.55 AS2860 NOS COMUNICACOES, S.A. 3.40ms from Lisbon, PT
94.6.235.167 AS5607 Sky UK Limited 4.78ms from London, GB
180.109.37.71 AS4134 CHINANET BACKBONE 1.40ms from Nanjing, CN
62.85.15.55 AS12578 SIA Tet 0.66ms from Riga, LV
87.70.25.135 AS12400 Partner Communications Ltd. 2.45ms from Rosh Ha‘Ayin, IL
112.167.74.199 AS4766 Korea Telecom 5.38ms from Seoul, KR
36.212.150.39 AS9808 China Mobile Communications Group Co., Ltd. 2.89ms from Shenzhen, CN
13.250.15.199 AS16509 Amazon.com, Inc. 0.49ms from Singapore, SG
177.80.84.231 AS28573 Claro NXT Telecomunicacoes Ltda 6.94ms from São Paulo, BR
83.110.132.167 AS5384 Emirates Internet 4.47ms from Al Fujairah City, AE

Traceroute

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

$
traceroute -a -n -q1 -f5 202.12.124.225
traceroute to 202.12.124.225 (202.12.124.225): 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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