Country
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ASN LANDING PAGE
AS81
NCREN - MCNC
Last updated · Apr 4, 2026
Total prefixes
144
IPv4 prefixes
140
IPv6 prefixes
4
ASN summary
How to read the scale of AS81
NCREN - MCNC currently shows 144 prefixes and 47 upstream, downstream, or peer relationships. Larger prefix inventories often indicate broader network footprint, but they should still be read together with country and peering context.
When is an ASN page most useful?
ASN landing pages are more useful than a single IP page when you want cloud provider attribution, routing research, infrastructure comparison, or network topology analysis at the organization level.
How should you read the country, organization, and role of AS81?
NCREN - MCNC is currently associated with an unknown region. Country data is only a starting point; the more important signals are the organization name, website, prefix volume, and peering relationships that reveal whether the network behaves like a cloud platform, ISP, CDN, or enterprise backbone.
What should you inspect next after the AS81 page?
This page is currently showing live ASN data that can be used for peer, prefix, and network scale analysis. The most useful next step is usually to return to a related IP landing page, then compare that concrete address with this ASN profile and with broader topic pages for routing, cloud attribution, or WHOIS ownership analysis.
Search intents this ASN page helps cover
AS81 ASN lookupAS81 BGPAS81 peersAS81 prefixesAS81 upstreamsNCREN - MCNC ASN
Upstreams
Detailed data for this ASN is not available right now.
Downstreams
AS36850
AS36850
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AS19718
AS19718
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AS13371
AS13371
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AS6559
AS6559
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AS11442
AS11442
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AS10952
AS10952
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AS19413
AS19413
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AS396978
AS396978
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AS396028
AS396028
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AS53785
AS53785
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AS46255
AS46255
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AS395312
AS395312
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AS19161
AS19161
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AS396391
AS396391
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AS40245
AS40245
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AS394165
AS394165
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AS32417
AS32417
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AS32711
AS32711
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AS46963
AS46963
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AS395465
AS395465
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AS399407
AS399407
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AS18538
AS18538
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AS22862
AS22862
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AS394407
AS394407
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AS26741
AS26741
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AS399050
AS399050
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AS400959
AS400959
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AS11777
AS11777
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AS13862
AS13862
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AS393875
AS393875
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AS399708
AS399708
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AS47098
AS47098
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AS393824
AS393824
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AS46794
AS46794
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AS398580
AS398580
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AS53384
AS53384
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AS399565
AS399565
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AS20197
AS20197
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AS33401
AS33401
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AS396837
AS396837
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Peers
Prefix inventory
| Prefix | Name | Country |
|---|---|---|
| 128.109.0.0/16 | AS81 | — |
| 152.10.0.0/16 | AS81 | — |
| 152.11.0.0/16 | AS81 | — |
| 152.12.0.0/16 | AS81 | — |
| 152.18.0.0/16 | AS81 | — |
| 152.20.0.0/16 | AS81 | — |
| 152.21.0.0/16 | AS81 | — |
| 152.22.0.0/16 | AS81 | — |
| 152.22.32.0/21 | AS81 | — |
| 152.22.40.0/21 | AS81 | — |
| 152.22.48.0/21 | AS81 | — |
| 152.22.64.0/21 | AS81 | — |
| 152.22.72.0/21 | AS81 | — |
| 152.22.80.0/21 | AS81 | — |
| 152.26.0.0/16 | AS81 | — |
| 152.26.208.0/24 | AS81 | — |
| 152.26.209.0/24 | AS81 | — |
| 152.26.210.0/24 | AS81 | — |
| 152.26.211.0/24 | AS81 | — |
| 152.26.212.0/24 | AS81 | — |
| 152.26.213.0/24 | AS81 | — |
| 152.26.44.0/24 | AS81 | — |
| 152.26.69.0/24 | AS81 | — |
| 152.27.0.0/16 | AS81 | — |
| 152.27.12.0/24 | AS81 | — |
| 152.28.0.0/16 | AS81 | — |
| 152.28.1.0/24 | AS81 | — |
| 152.29.0.0/16 | AS81 | — |
| 152.30.0.0/16 | AS81 | — |
| 152.30.10.0/24 | AS81 | — |
| 152.30.92.0/22 | AS81 | — |
| 152.30.92.0/24 | AS81 | — |
| 152.32.0.0/18 | AS81 | — |
| 152.35.0.0/16 | AS81 | — |
| 152.38.0.0/18 | AS81 | — |
| 152.38.160.0/19 | AS81 | — |
| 152.38.17.0/24 | AS81 | — |
| 152.38.18.0/24 | AS81 | — |
| 152.38.192.0/20 | AS81 | — |
| 152.38.208.0/20 | AS81 | — |
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Related lookups and next steps
WHOIS vs ASN Ownership Guide
Continue from this ASN into the differences between WHOIS ownership and ASN ownership.
Routing Troubleshooting and Network Analysis
Continue from this ASN into route troubleshooting and network analysis.
Cloud Network and ASN Comparison
Useful when you want to compare this ASN against larger cloud and edge networks.
WHOIS and IP Ownership Guide
Continue from the ASN page into WHOIS and ownership verification.
Frequently asked questions about this ASN page
What does AS81 represent?
AS81 is an autonomous system number used to identify an independently operated network. The current page associates it with NCREN - MCNC in an unknown region, which helps determine whether it behaves like a cloud provider, ISP, CDN, or enterprise backbone.
What are peers, upstreams, and prefixes useful for on the AS81 page?
They help explain the scale, interconnection depth, and route structure of AS81. Richer peering and upstream data often indicate broader network reach, but they should still be interpreted together with prefixes and related IP landing pages.
What should you do after reviewing AS81?
The best next step is usually to return to a concrete IP landing page to see how a specific address maps into AS81, then continue into cloud, WHOIS, or routing topic pages to understand the network in a broader context.
Related topics
WHOIS vs ASN Ownership Guide
Understand why WHOIS ownership and ASN ownership can differ, and how to combine both when deciding who really owns or operates an IP.
WHOIS and IP Ownership Guide
Use WHOIS, ASN, prefixes, and organization data to determine who ultimately owns an IP, range, or resolved domain target.
BGP and ASN Basics Guide
Learn what ASN, BGP routes, prefixes, upstreams, downstreams, and peers mean, then explore real ASN pages.
Cloud Network and ASN Comparison
Compare large cloud and edge networks such as Google, Cloudflare, Microsoft, and Amazon through their ASN landing pages.