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Country

Guam

Oceania GU
IPv4 addresses
261,395
CIDR ranges
212
Global rank · IPv4
#139 of 250
ASNs
15
Organizations
15

Top ASNs

ASNNameIPs
AS3605 Guam Cablevision, LLC. 81.9K
AS395400 UNIVERSITY OF GUAM 65.8K
AS9246 Teleguam Holdings, LLC 34.8K
AS7131 PTI Pacifica Inc. 22.3K
AS21996 GUAMCELL Communications 14.1K
AS53813 ZSCALER, INC. 8.2K
AS17456 Pacific Data Systems 5.1K
AS703 Verizon Business 3.6K
AS56200 Guam Community College 1.0K
AS36183 Akamai Technologies, Inc. 768
AS23676 Mariana Islands Internet Exchange 256
AS137409 GSL Networks Pty LTD 256
AS140627 OneQode 256
AS152735 Guam Exchange 256
AS212238 Datacamp Limited 256

Network composition

How Guam's allocated IPv4 space breaks down by operator type, regional registry, and block size.

By operator category
CategoryIPv4Share
ISP / Telecom 99.3K
59.8%
Academic / Research 66.8K
40.2%
By regional registry (RIR)
RegistryIPv4Share
APNIC 170.8K
65.3%
ARIN 87.3K
33.4%
AFRINIC 2.6K
1.0%
RIPE NCC 519
0.2%
LACNIC 256
0.1%
Prefix-size distribution (network ranges by block size)
/16–/19
11
/20–/22
36
/23
18
/24
19
/25–/28
43
/29–/32
84

Routing & security

Live BGP routing footprint for Guam from our global collectors, with RPKI route-origin validation coverage.

Announced prefixes
364
Origin ASNs
20
RPKI-valid
72.3%
263 of 364 ROA-covered

RPKI-valid % = announced prefixes with a matching Route Origin Authorization. Live routing →

Reverse-DNS, threat intelligence & internet health

How much of Guam's address space resolves to a hostname, how much appears on public threat blocklists, how widely the population is online, and independent signals of censorship and outages.

Reverse-DNS coverage
47.1%
123.1K IPs with a PTR
Internet adoption
80.5%
of population · 2017
Censorship signal
14.2%
0 confirmed-blocked · 30d
Network outages
8
events · last 90d
Median speed
151 Mbps ↓
46 Mbps ↑ · 91ms
47.1% of allocated IPv4 has a PTR

Reverse-DNS + threat-blocklist footprint from our own scanning & 8 threat-intel feeds. Internet adoption from the World Bank; censorship measurements from OONI; outage detection from IODA / Georgia Tech; connection speed from Cloudflare Radar.

Frequently Asked Questions

How many IPv4 addresses are allocated to Guam?

Guam has 261,395 IPv4 addresses allocated across 212 network ranges. These allocations are managed by regional internet registries and assigned to organizations operating within the country.

What are the largest internet providers in Guam?

The top organizations in Guam by IP allocation include the major ISPs, hosting providers, and enterprises listed above. These 15 organizations collectively manage the majority of the country's IPv4 address space.

How many ASNs operate in Guam?

Guam has 15 or more registered Autonomous Systems. Each ASN represents an independently routed network, such as an ISP, cloud provider, or enterprise network.

What continent is Guam in?

Guam is located in Oceania. IP address allocations in this region are managed by the regional internet registry.

Last updated: 2026-07-22 17:55:32 UTC
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