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ASN lookup result for AS21743 Atlas Networks Corporation — network size, BGP routing and registration

USAS21743Atlas Networks CorporationISP
WHOIS Topology

United States · ARINatlasnet.com

Home broadbandRPKI filtering

IPv4 addresses

23,040

24 announced prefixes

IPv6 addresses

7.92 × 10²⁸

2 announced prefixes

BGP neighbours

…

CAIDA rank

#8,659

Customer cone 2 ASNs

Estimated users

3.73K

APNIC: 3.7K

RPKI

50% valid

0 invalid · 13 not covered

Average purity

93

268 sampled IPs

IXPs / facilities

1 / 3

Operator self-reported

History

How prefixes were announced and changed hands, registration changes, and outage or hijack incidents.

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IP ranges

Currently announced prefixes with their RIR registration and geolocation.

PrefixRPKIRegistrationGeolocationAddresses
66.171.176.0/20Not found—USSeattle4,096
66.170.184.0/21Not found—USCle Elum2,048
149.57.248.0/21Valid—USUnited States2,048
199.231.240.0/21Not found—USSeattle2,048
69.5.52.0/22Valid—USUnited States1,024
91.234.156.0/22Not foundRORO-GVM-20120125RIPEAUSydneyCross-border1,024
104.36.44.0/22Not found—USSeattle1,024
104.192.204.0/22Not found—USRedmond1,024
104.247.120.0/22Not found—USUnited States1,024
104.255.0.0/22Not found—USSeattle1,024
149.18.8.0/22Not found—USSeattle1,024
154.6.48.0/22Not found—USSeattle1,024
216.247.100.0/22Not found—AUAdelaide1,024
64.93.12.0/23Valid—USUnited States512
104.254.210.0/23Valid—USUnited States512
209.200.234.0/23Valid—USSeattle512
45.42.141.0/24Valid—USUnited States256
45.42.142.0/24Valid—USUnited States256
64.57.177.0/24Valid—USSeattle256
66.93.14.0/24Valid—USUnited States256

/24 block profile

One square per /24: colour shows the risk type, shade how many addresses are flagged, stripes mark datacenter blocks. Click a square to see all 256 addresses.

/24s with data 26 / 90 （29%） · flagged 9

No risk flagsDatacenter (no flags)ProxyVPNAbuse / blocklistTorDarker = more flagged addresses; dashed = block screen only

69.5.52.0/224/4 with data · 0 flagged

154.6.48.0/223/4 with data · 0 flagged

104.247.120.0/222/4 with data · 1 flagged

149.18.8.0/222/4 with data · 0 flagged

216.247.100.0/222/4 with data · 0 flagged

104.254.210.0/232/2 with data · 0 flagged

209.200.234.0/232/2 with data · 1 flagged

66.171.176.0/201/16 with data · 0 flagged

104.192.204.0/221/4 with data · 1 flagged

45.42.141.0/241/1 with data · 1 flagged

45.42.142.0/241/1 with data · 0 flagged

64.57.177.0/241/1 with data · 1 flagged

Hover a square for its numbers; click to see all 256 addresses.

Each prefix shows its 64 /24s with the most data. Built daily from lookups, neighbour sampling, public lists and block screening.

IP reputation

IPs from this network that CleanIP has analysed: purity, abuse reports and the riskiest /24 blocks.

Purity distribution

85–100 23970–84 2250–69 70–49 0

0.07%

Share of IPv4 reported or blocklisted

14

Listed IPs

268

Analysed IPs

Flagged = VPN, proxy, Tor or purity below 50. Samples come from user lookups and neighbour sampling, not every address in this network.

Geography

Where this network’s IPv4 addresses are located.

  • US United States
  • AU Australia
Scope
Regional
In registered country
94.4%

Estimated by sampling IPv4 ranges against a geolocation database.

Traffic observation

AS21743 · Last 7 days
Mobile vs. Desktop
Desktop 83.5%Mobile 16.5%
Desktop83.5%Mobile16.5%
Bot vs. Human
Human 56.5%Bot 43.5%
Human56.5%Bot43.5%

Adoption & Usage

Adoption and usage of key protocols

Internet Protocol (IP) Version
IPv4 97.5%IPv6 2.5%2.5%IPv6
IPv497.5%IPv62.5%
HTTP Version
HTTP/1.x
27.2%HTTP/2
61.5%HTTP/3
11.3%
HTTP vs. HTTPS
99.0% HTTPS (encrypted)
Plain HTTP 1.0%
TLS Version
TLS 1.0/1.10%TLS 1.28.5%TLS 1.380.0%QUIC11.4%

Security & Attacks

Insights into network and application layer attack traffic

Layer 7 Attacks
GET
82.5%POST
10.4%HEAD
6.8%OPTIONS
0.3%

BGP Announcements

Hourly BGP route announcements over the last 7 days

75,474
7-day total
3,945
Hourly peak

Data: Cloudflare Radar, licensed under CC BY-NC 4.0

Activity

Hourly traffic over the last 7 days, normalized to this network’s peak.

Fairly flat around the clock, typical of server or hosting networks.

00061218
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Times in UTCLessMore
Peak hour
17:00–18:00
Active hours
24 hrs
Weekend vs weekday
Weekdays heavier
Busiest day
Tue

Datacenter Presence

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BGP upstreams and neighbours

AS21743Standalone page
Loading upstreams and neighbours…

WHOIS record

The registry’s record for this AS number: holder, status, dates and contacts.

Sources

Where the information on this page comes from and when it was updated.

InformationSourceUpdated
Registered countryRIR daily delegation statistics2026-10-20
Registered address & allocation dateRIR registration data (RDAP)2026-10-03
Organization & company countryAS-to-organization data2026-10-21
Network typeCleanIP ASN canon2026-10-21
Exchanges & facilitiesOperator self-reported interconnection data2026-10-21
Announced prefixes & BGP neighboursPublic BGP routing data2026-10-22
IPv4 geographyGeolocation database—
RPKI validationRPKI ROA validation data2026-10-22
Rank & customer coneCAIDA AS Rank2026-10-01
Estimated users (APNIC)APNIC Labs user estimates2026-10-19
Network tagsPublic routing data community tags2026-10-21
IP reputationCleanIP lookups and neighbour sampling—

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Multi-source cross-checks · In-house reputation data · Real data only

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