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AS19905

AS19905 is Arbor Cloud.

Last updated 3 Nov 2026 from DB-IP ASN Lite (2026-11-01) and RIR statistics (3 Nov 2026)

Short answer

AS19905 belongs to Arbor Cloud. DB-IP Lite attributes 34,816 IPv4 addresses in 67 ranges and 13 IPv6 ranges to it, 47% of the IPv4 space in United States. The number is registered with ARIN in United States on 24 Aug 2007.

Facts for AS19905
Operator (DB-IP)Arbor Cloud
IPv4 addresses34,816
IPv4 ranges67
IPv6 ranges13
RegistryARIN
Registered24 Aug 2007
Registry countryUnited States (US)

Does it publish a geofeed?

We haven’t checked this network’s registry records for a geofeed yet. The Truth Check looks for one live for any address you test.

Shared addresses (CGNAT)

Arbor Cloud hasn’t been documented as using carrier-grade NAT in a source we could check. To see whether your own connection is behind it, compare your router’s address on the CGNAT check.

IPv6

DB-IP lists 13 IPv6 ranges for AS19905, so customers can get IPv6 addresses, which databases place separately from IPv4.

Where its IPv4 space is used, according to DB-IP

US47%
SA15%
AE9%
KW6%
OM4%
NL3%
DE2%
GB2%

Share of the network’s IPv4 addresses by DB-IP Country Lite. IP Geolocation by DB-IP.

IP ranges

RangeAs CIDRAddresses
5.36.169.0 – 5.36.169.2555.36.169.0/24256
5.36.199.0 – 5.36.199.2555.36.199.0/24256
5.37.159.0 – 5.37.159.2555.37.159.0/24256
12.51.26.0 – 12.51.26.25512.51.26.0/24256
24.248.247.0 – 24.248.247.25524.248.247.0/24256
37.224.77.0 – 37.224.77.25537.224.77.0/24256
68.22.157.0 – 68.22.157.25568.22.157.0/24256
68.71.223.0 – 68.71.223.25568.71.223.0/24256
74.115.24.0 – 74.115.24.25574.115.24.0/24256
74.115.26.0 – 74.115.28.25574.115.26.0/23, 74.115.28.0/24768
74.115.30.0 – 74.115.30.25574.115.30.0/24256
77.232.97.0 – 77.232.97.25577.232.97.0/24256
83.111.28.0 – 83.111.28.25583.111.28.0/24256
91.102.233.0 – 91.102.237.25591.102.233.0/24, 91.102.234.0/23 …1,280
91.102.239.0 – 91.102.239.25591.102.239.0/24256
91.229.32.0 – 91.229.33.25591.229.32.0/23512
95.140.160.0 – 95.140.161.25595.140.160.0/23512
109.71.24.0 – 109.71.24.255109.71.24.0/24256
139.104.72.0 – 139.104.79.255139.104.72.0/212,048
139.104.186.0 – 139.104.186.255139.104.186.0/24256
146.88.242.0 – 146.88.242.255146.88.242.0/24256
146.88.245.0 – 146.88.246.255146.88.245.0/24, 146.88.246.0/24512
147.160.159.0 – 147.160.159.255147.160.159.0/24256
156.137.1.0 – 156.137.1.255156.137.1.0/24256
156.137.195.0 – 156.137.195.255156.137.195.0/24256
156.154.60.0 – 156.154.60.255156.154.60.0/24256
156.154.92.0 – 156.154.92.255156.154.92.0/24256
156.154.118.0 – 156.154.118.255156.154.118.0/24256
156.154.120.0 – 156.154.121.255156.154.120.0/23512
156.154.152.0 – 156.154.152.255156.154.152.0/24256
156.154.160.0 – 156.154.166.255156.154.160.0/22, 156.154.164.0/23 …1,792
156.154.178.0 – 156.154.179.255156.154.178.0/23512
156.154.208.0 – 156.154.234.255156.154.208.0/20, 156.154.224.0/21 …6,912
156.154.236.0 – 156.154.238.255156.154.236.0/23, 156.154.238.0/24768
156.154.240.0 – 156.154.243.255156.154.240.0/221,024
156.154.245.0 – 156.154.247.255156.154.245.0/24, 156.154.246.0/23768
162.249.1.0 – 162.249.1.255162.249.1.0/24256
165.72.190.0 – 165.72.190.255165.72.190.0/24256
165.72.192.0 – 165.72.192.255165.72.192.0/24256
178.249.176.0 – 178.249.177.255178.249.176.0/23512
184.185.28.0 – 184.185.29.255184.185.28.0/23512
185.98.183.0 – 185.98.183.255185.98.183.0/24256
185.148.148.0 – 185.148.148.255185.148.148.0/24256
185.148.150.0 – 185.148.151.255185.148.150.0/23512
192.193.81.0 – 192.193.81.255192.193.81.0/24256
192.193.83.0 – 192.193.83.255192.193.83.0/24256
193.8.250.0 – 193.8.250.255193.8.250.0/24256
193.19.90.0 – 193.19.91.255193.19.90.0/23512
194.69.42.0 – 194.69.42.255194.69.42.0/24256
194.126.231.0 – 194.126.231.255194.126.231.0/24256
2001:67c:3e8:: – 2001:67c:3e8:ffff:ffff:ffff:ffff:ffff2001:67c:3e8::/48IPv6
2403:c580:fff3:: – 2403:c580:fff3:ffff:ffff:ffff:ffff:ffff2403:c580:fff3::/48IPv6
2403:c580:fffd:: – 2403:c580:fffd:ffff:ffff:ffff:ffff:ffff2403:c580:fffd::/48IPv6
2610:a1:2002:: – 2610:a1:2002:ffff:ffff:ffff:ffff:ffff2610:a1:2002::/48IPv6
2610:a1:2006:: – 2610:a1:200a:ffff:ffff:ffff:ffff:ffff2610:a1:2006::/47IPv6
2610:a1:200f:: – 2610:a1:200f:ffff:ffff:ffff:ffff:ffff2610:a1:200f::/48IPv6
2610:a1:2016:: – 2610:a1:2016:ffff:ffff:ffff:ffff:ffff2610:a1:2016::/48IPv6
2610:a1:201c:: – 2610:a1:201c:ffff:ffff:ffff:ffff:ffff2610:a1:201c::/48IPv6
2610:a1:20ff:: – 2610:a1:20ff:ffff:ffff:ffff:ffff:ffff2610:a1:20ff::/48IPv6
2620:1d6:fff3:: – 2620:1d6:fff3:ffff:ffff:ffff:ffff:ffff2620:1d6:fff3::/48IPv6
2620:1d6:fffd:: – 2620:1d6:fffd:ffff:ffff:ffff:ffff:ffff2620:1d6:fffd::/48IPv6
2a05:4a40:fff3:: – 2a05:4a40:fff3:ffff:ffff:ffff:ffff:ffff2a05:4a40:fff3::/48IPv6
2a05:4a40:fffd:: – 2a05:4a40:fffd:ffff:ffff:ffff:ffff:ffff2a05:4a40:fffd::/48IPv6
Showing 50 of 67 IPv4 and 13 of 13 IPv6 ranges All ranges (CSV)

IP Geolocation by DB-IP, ASN Lite, CC BY 4.0.

Using an address from this network? See which sources agree on where it is.

Sources

  1. DB-IP IP to ASN Lite (CC BY 4.0) · checked 3 Nov 2026
  2. NRO RIR delegated-extended statistics · checked 4 Nov 2026