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 53,263
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 a month 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 53,263 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 ██████████ 50,116
103.168.172.52 ██████████ 47,899
103.168.172.65 ██████████ 163
103.168.172.39 ██████████ 47
103.168.172.54 ██████████ 44
103.168.172.29 ██████████ 16
103.168.172.60 ██████████ 12
103.168.172.45 ██████████ 12
103.168.172.47 ██████████ 11
103.168.172.62 ██████████ 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
103.168.172.45 AS151847 Fastmail Pty Ltd 0.36ms from Philadelphia, US
2001:df7:1680::1 AS151847 Fastmail Pty Ltd 3.21ms from Secaucus, US
202.12.124.146 AS151847 Fastmail Pty Ltd 0.27ms 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
136.146.8.167 AS14340 Salesforce.com, Inc. 0.96ms from Ashburn, US
45.183.132.247 AS267501 Equatorial Telecomunicacoes LTDA 14.48ms from Fortaleza, BR
194.8.147.23 AS59497 Buknet LLC 8.54ms from Kyiv, UA
36.49.120.87 AS4134 CHINANET-BACKBONE 11.62ms from Liaoyang, CN
68.231.87.71 AS22773 Cox Communications Inc. 7.72ms from Phoenix, US
95.68.38.151 AS12578 SIA Tet 1.33ms from Riga, LV
95.224.63.135 AS3269 Telecom Italia S.p.A. 18.84ms from Rome, IT
193.91.255.103 AS2116 GLOBALCONNECT AS 2.33ms from Sandefjord, NO
119.214.150.39 AS4766 Korea Telecom 1.54ms from Seoul, KR
122.51.35.199 AS45090 Shenzhen Tencent Computer Systems Company Limited 0.68ms from Shanghai, CN
70.191.114.167 AS22773 Cox Communications Inc. 19.54ms from Ashburn, US
173.53.117.119 AS701 Verizon Business 4.44ms from Ashburn, US
98.26.159.39 AS11426 Charter Communications Inc 10.84ms from Charlotte, US
27.58.23.39 AS24560 Bharti Airtel Ltd., Telemedia Services 6.30ms from Delhi, IN
112.124.67.39 AS37963 Hangzhou Alibaba Advertising Co.,Ltd. 4.46ms from Hangzhou, CN
116.140.38.23 AS4837 CHINA UNICOM China169 Backbone 3.13ms from Liaoyang, CN
81.101.71.39 AS5089 Virgin Media Limited 14.69ms from London, GB
108.254.220.55 AS7018 AT&T Enterprises, LLC 10.19ms from Miami, US
68.183.31.135 AS14061 DigitalOcean, LLC 0.23ms from New York City, US
177.129.79.247 AS263630 Cooperativa Central de Credito de Santa Catarina 7.26ms from Novo Hamburgo, BR
35.153.8.231 AS14618 Amazon.com, Inc. 0.22ms from Reston, US
124.53.248.167 AS17858 LG POWERCOMM 5.62ms from Seoul, KR
203.245.41.183 AS4766 Korea Telecom 0.93ms from Seoul, KR
222.108.164.23 AS4766 Korea Telecom 0.78ms from Seoul, KR
211.200.86.55 AS9318 SK Broadband Co Ltd 1.70ms from Seoul, KR

Traceroute

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

$
traceroute -a -n -q1 -f4 202.12.124.146
traceroute to 202.12.124.146 (202.12.124.146): 64 hops max, 52 byte packets
4 [AS30083] 207.38.95.1 3.928 ms
5 *
6 *
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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