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 54,263
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 3 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 54,263 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 ██████████ 51,120
103.168.172.52 ██████████ 48,735
103.168.172.65 ██████████ 163
103.168.172.39 ████████ 55
103.168.172.54 ██████████ 42
103.168.172.29 ██████████ 13
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
2001:df7:1680::1 AS151847 Fastmail Pty Ltd 3.12ms from New York City, US
202.12.124.135 AS151847 Fastmail Pty Ltd 0.27ms from St. Louis, US
103.168.172.254 AS151847 Fastmail Pty Ltd 0.37ms from Philadelphia, 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
20.56.107.119 AS8075 Microsoft Corporation 0.33ms from Amsterdam, NL
77.49.253.183 AS1241 Forthnet 4.43ms from Athens, GR
194.94.240.119 AS680 Verein zur Foerderung eines Deutschen Forschungsnetzes e.V. 8.73ms from Frankfurt am Main, DE
62.49.246.215 AS5378 Vodafone Limited 3.59ms from London, GB
79.13.77.103 AS3269 Telecom Italia S.p.A. 5.75ms from Naples, IT
107.161.189.55 AS33182 HostDime.com, Inc. 0.15ms from Orlando, US
153.181.61.167 AS4713 NTT DOCOMO BUSINESS,Inc. 3.34ms from Osaka, JP
78.202.80.247 AS12322 Free SAS 1.23ms from Paris, FR
38.254.201.39 AS54936 Wyyerd Group 3.34ms from Phoenix, US
209.33.199.71 AS11071 InfoWest 7.65ms from Salt Lake City, US
3.0.157.7 AS16509 Amazon.com, Inc. 0.10ms from Singapore, SG
23.35.125.119 AS16625 Akamai Technologies, Inc. 0.12ms from Tokyo, JP
196.3.198.215 AS35900 Digicel Barbados Ltd 1.28ms from Bridgetown, BB
92.5.79.71 AS31898 Oracle Corporation 0.37ms from Frankfurt am Main, DE
84.168.22.23 AS3320 Deutsche Telekom AG 7.53ms from Frankfurt am Main, DE
108.208.121.55 AS7018 AT&T Enterprises, LLC 2.82ms from Los Angeles, US
126.92.247.87 AS17676 SoftBank Corp. 3.78ms from Osaka, JP
60.137.1.199 AS17676 SoftBank Corp. 3.95ms from Osaka, JP
62.85.15.55 AS12578 SIA Tet 0.69ms from Riga, LV
52.9.182.199 AS16509 Amazon.com, Inc. 0.13ms from San Jose, US
189.133.84.231 AS8151 UNINET 7.81ms from Santiago de Queretaro, MX
14.33.31.199 AS4766 Korea Telecom 1.36ms from Seoul, KR
119.219.159.55 AS4766 Korea Telecom 7.65ms from Seoul, KR
118.47.117.215 AS4766 Korea Telecom 6.80ms from Seoul, KR
203.125.253.231 AS3758 SingNet 1.30ms from Singapore, SG

Traceroute

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

$
traceroute -a -n -q1 -f4 103.168.172.109
traceroute to 103.168.172.109 (103.168.172.109): 64 hops max, 52 byte packets
4 [AS6939] 184.105.65.154 17.373 ms
5 [AS6939] 184.104.198.14 23.199 ms
6 [AS6939] 184.105.19.103 21.036 ms
7 *
Measurement taken from IPinfo ProbeNet in Jacksonville, 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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