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 1,208,925,819,614,629,200,000,000
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
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

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

IP Address ASN Details
202.12.124.195 AS151847 Fastmail Pty Ltd 0.20ms from St. Louis, US
103.168.172.217 AS151847 Fastmail Pty Ltd 2.80ms 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
81.182.116.103 AS5483 Magyar Telekom Plc. 2.64ms from Budapest, HU
122.171.253.71 AS24560 Bharti Airtel Ltd., Telemedia Services 13.39ms from Chennai, IN
65.31.43.183 AS10796 Charter Communications Inc 5.38ms from Columbus, US
66.52.225.119 AS20115 Charter Communications LLC 6.84ms from Dallas, US
46.197.36.103 AS47524 Turksat Uydu Haberlesme Kablo TV ve Isletme A.S. 10.38ms from Denizli, TR
206.81.27.23 AS14061 DigitalOcean, LLC 0.38ms from Frankfurt am Main, DE
154.92.200.71 AS9304 HGC Global Communications Limited 2.92ms from Hong Kong, HK
124.54.227.7 AS17858 LG POWERCOMM 1.41ms from Incheon, KR
219.149.65.39 AS4134 CHINANET BACKBONE 4.24ms from Liaoyang, CN
49.70.81.7 AS4134 CHINANET BACKBONE 4.78ms from Nanjing, CN
14.34.127.87 AS4766 Korea Telecom 1.97ms from Seoul, KR
153.156.211.167 AS4713 NTT DOCOMO BUSINESS,Inc. 6.92ms from Tokyo, JP
154.250.25.183 AS36947 Telecom Algeria 10.28ms from Algiers, DZ
142.0.184.71 AS27357 Rackspace Hosting 0.70ms from Ashburn, US
197.144.12.39 AS36884 Wana Corporate 10.95ms from Casablanca, MA
167.142.2.151 AS5056 Aureon Network Services 2.10ms from Des Moines, US
98.35.120.199 AS7922 Comcast Cable Communications, LLC 6.53ms from Fremont, US
156.234.237.55 AS138415 Yancy Limited 0.64ms from Hong Kong, HK
1.247.106.103 AS9318 SK Broadband Co Ltd 2.30ms from Incheon, KR
38.60.255.199 AS138915 Kaopu Cloud HK Limited 0.03ms from Istanbul, TR
88.250.89.55 AS9121 Turk Telekomunikasyon Anonim Sirketi 1.97ms from Istanbul, TR
119.187.109.7 AS4837 CHINA UNICOM China169 Backbone 8.44ms from Jinan, CN
86.136.71.199 AS2856 British Telecommunications PLC 1.96ms from London, GB
47.180.102.103 AS5650 Frontier Communications of America, Inc. 3.33ms from Los Angeles, US
70.126.35.231 AS33363 Charter Communications, Inc 9.10ms from Orlando, US

Traceroute

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

$
traceroute -a -n -q1 -f2 103.168.172.66
traceroute to 103.168.172.66 (103.168.172.66): 64 hops max, 52 byte packets
2 [] 206.71.12.27 1.007 ms
3 [AS1828] 50.115.90.125 1.024 ms
4 [AS1828] 50.115.91.84 21.049 ms
Measurement taken from IPinfo ProbeNet in Atlanta, 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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