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Country

Sri Lanka

Asia LK
IPv4 addresses
591,609
CIDR ranges
262
Global rank · IPv4
#111 of 250
ASNs
29
Organizations
28
Regions / states
9

Top ASNs

ASNNameIPs
AS9329 Sri Lanka Telecom Internet 262.1K
AS18001 Dialog Axiata PLC. 184.3K
AS38229 Lanka Education & Research Network, NREN 34.8K
AS5087 Lanka Communication Services 22.8K
AS45356 Mobitel Pvt Ltd 17.4K
AS18066 Tata Communications Lanka Ltd 5.6K
AS17470 Hutchison Telecommunications Lanka (Private) Limited 4.4K
AS44559 It Hostline Ltd 2.8K
AS138984 Sri Lanka Telecom Ltd 2.8K
AS4755 TATA Communications formerly VSNL is Leading ISP 2.3K
AS48031 Ivanov Vitaliy Sergeevich 2.0K
AS132124 Information and Communication Technology Agency of Sri Lanka 2.0K
AS132447 234, Galle Road, Colombo 4 2.0K
AS17904 Sri Lankan Airlines 1.3K
AS14789 Cloudflare, Inc. 1.0K
AS133051 COMMERCIAL BANK OF CEYLON PLC 1.0K
AS45489 Sri Lanka Telecom PLC, GLobal Peering 768
AS212238 Datacamp Limited 768
AS139032 Nations Trust Banks Plc 512
AS58272 LeaderTelecom B.V. 256
AS134824 Tekki Pvt Ltd 256
AS136934 Bank Of Ceylon 256
AS139731 Hatton National Bank PLC 256
AS151197 OREL I T Private Limited 256
AS151485 CEYLON ELECTRICITY BOARD 256

Regions / states / provinces

Network composition

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

By operator category
CategoryIPv4Share
ISP / Telecom 270.8K
56.2%
Enterprise 176.1K
36.6%
Academic / Research 34.8K
7.2%
By regional registry (RIR)
RegistryIPv4Share
APNIC 572.2K
96.7%
RIPE NCC 10.4K
1.8%
AFRINIC 5.4K
0.9%
ARIN 3.6K
0.6%
Prefix-size distribution (network ranges by block size)
/8–/15
1
/16–/19
18
/20–/22
42
/23
16
/24
43
/25–/28
40
/29–/32
102

Routing & security

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

Announced prefixes
2,184
Origin ASNs
46
RPKI-valid
92.5%
2,021 of 2,184 ROA-covered

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

Reverse-DNS, threat intelligence & internet health

How much of Sri Lanka'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
26.5%
156.9K IPs with a PTR
On threat blocklists
16
flagged across 6 feeds
Internet adoption
54.6%
of population · 2024
Censorship signal
2.4%
0 confirmed-blocked · 30d
Network outages
4
events · last 90d
Median speed
37 Mbps ↓
14 Mbps ↑ · 56ms
26.5% 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 Sri Lanka?

Sri Lanka has 591,609 IPv4 addresses allocated across 262 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 Sri Lanka?

The top organizations in Sri Lanka by IP allocation include the major ISPs, hosting providers, and enterprises listed above. These 28 organizations collectively manage the majority of the country's IPv4 address space.

How many ASNs operate in Sri Lanka?

Sri Lanka has 29 or more registered Autonomous Systems. Each ASN represents an independently routed network, such as an ISP, cloud provider, or enterprise network.

What continent is Sri Lanka in?

Sri Lanka is located in Asia. IP address allocations in this region are managed by APNIC.

Last updated: 2026-10-27 09:54:05 UTC
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