65,536 routable37 ASes
/16 subnet
81.31.0.0/16
Where this subnet is, who announces it, and what our databases hold in it. Below, every /24 inside it; open one for its addresses.
65,536
routable addresses
65,536
geolocated
21
countries
37
announcing ASes
85
announced prefixes
900
anonymous addresses
Where it is
Addresses IP Geolocation places in each country, as a share of those it places.
- United Kingdom14,137 · 21.57%
- Iran12,800 · 19.53%
- United States6,608 · 10.08%
- Germany5,376 · 8.20%
- Czechia4,352 · 6.64%
- Denmark4,096 · 6.25%
- Finland4,096 · 6.25%
- Italy4,096 · 6.25%
- The Netherlands3,542 · 5.40%
- France2,880 · 4.39%
Who announces it
Each /24 counted for the AS announcing most of it, as a share of the routable addresses.
- AS8468Cityfibre Limited8,192 · 12.50%
- AS12660Sharif University Of Technology8,192 · 12.50%
- AS3257GTT Communications Inc.7,936 · 12.11%
- AS3292TDC Holding A/S4,096 · 6.25%
- AS7029Windstream Communications LLC4,096 · 6.25%
- AS12519FastNet International Ltd4,096 · 6.25%
- AS24971MasterDC s.r.o.4,096 · 6.25%
- AS41242Sofor Oy4,096 · 6.25%
- AS47242Host SpA4,096 · 6.25%
- AS57235Chapar Rasaneh LLC3,072 · 4.69%
What the databases see
Addresses each address-keyed database holds in this block, as a share of its routable addresses. Counts overlap: one address can be in several.
- VPN IP6420.98%
- 0.40%
- 0.01%
- None here
- 0.01%
- None here
- None here
- Hosting IP14,84822.66%
- 0.01%
- Carrier IP2560.39%
- None here
- None here
- SSH IP2,5063.82%
- SMTP IP3830.58%
- 0.64%
- Web IP2,4413.72%
- 0.12%
Announced prefixes
Every prefix inside this block that BGP Route saw announced, with its origin and RPKI status.
| PREFIX | ORIGIN | COUNTRY | RPKI | PEERS | FIRST SEEN |
|---|---|---|---|---|---|
| 81.31.0.0/19 | AS3257GTT Communications Inc. | United States | Not found | 17 | 2026-10-02 |
| 81.31.28.0/24 | AS397025Alstom Transport SA | Germany | Not found | 17 | 2026-10-10 |
| 81.31.32.0/20 | AS24971MasterDC s.r.o. | Czechia | Valid | 17 | 2026-10-02 |
| 81.31.48.0/20 | AS41242Sofor Oy | Finland | Valid | 17 | 2026-10-02 |
| 81.31.64.0/20 | AS12519FastNet International Ltd | United Kingdom | Valid | 17 | 2026-10-02 |
| 81.31.80.0/20 | AS3292TDC Holding A/S | Denmark | Valid | 17 | 2026-10-02 |
| 81.31.96.0/19 | AS8468Cityfibre Limited | United Kingdom | Not found | 17 | 2026-10-02 |
| 81.31.128.0/20 | AS7029Windstream Communications LLC | United States | Valid | 17 | 2026-10-02 |
| 81.31.144.0/24 | AS47242Host SpA | Italy | Valid | 17 | 2026-10-02 |
| 81.31.145.0/24 | AS47242Host SpA | Italy | Valid | 17 | 2026-10-02 |
| 81.31.146.0/24 | AS47242Host SpA | Italy | Valid | 17 | 2026-10-02 |
| 81.31.147.0/24 | AS47242Host SpA | Italy | Valid | 17 | 2026-10-02 |
| 81.31.148.0/24 | AS47242Host SpA | Italy | Valid | 17 | 2026-10-02 |
| 81.31.149.0/24 | AS47242Host SpA | Italy | Valid | 17 | 2026-10-02 |
| 81.31.150.0/24 | AS47242Host SpA | Italy | Valid | 17 | 2026-10-02 |
| 81.31.151.0/24 | AS47242Host SpA | Italy | Valid | 17 | 2026-10-02 |
| 81.31.152.0/24 | AS47242Host SpA | Italy | Valid | 17 | 2026-10-02 |
| 81.31.153.0/24 | AS47242Host SpA | Italy | Valid | 17 | 2026-10-02 |
| 81.31.154.0/24 | AS47242Host SpA | Italy | Valid | 17 | 2026-10-02 |
| 81.31.155.0/24 | AS47242Host SpA | Italy | Valid | 17 | 2026-10-02 |
| 81.31.156.0/24 | AS47242Host SpA | Italy | Valid | 17 | 2026-10-02 |
| 81.31.157.0/24 | AS47242Host SpA | Italy | Valid | 17 | 2026-10-02 |
| 81.31.158.0/24 | AS47242Host SpA | Italy | Valid | 17 | 2026-10-02 |
| 81.31.159.0/24 | AS47242Host SpA | Italy | Valid | 17 | 2026-10-02 |
| 81.31.160.0/19 | AS12660Sharif University Of Technology | Iran | Not found | 17 | 2026-10-02 |
| 81.31.160.0/24 | AS12660Sharif University Of Technology | Iran | Not found | 17 | 2026-10-02 |
| 81.31.168.0/23 | AS12660Sharif University Of Technology | Iran | Not found | 17 | 2026-10-02 |
| 81.31.168.0/24 | AS12660Sharif University Of Technology | Iran | Not found | 17 | 2026-10-02 |
| 81.31.169.0/24 | AS12660Sharif University Of Technology | Iran | Not found | 17 | 2026-10-02 |
| 81.31.170.0/24 | AS12660Sharif University Of Technology | Iran | Not found | 17 | 2026-10-02 |
| 81.31.171.0/24 | AS12660Sharif University Of Technology | Iran | Not found | 17 | 2026-10-02 |
| 81.31.172.0/24 | AS12660Sharif University Of Technology | Iran | Not found | 17 | 2026-10-02 |
| 81.31.173.0/24 | AS12660Sharif University Of Technology | Iran | Not found | 17 | 2026-10-02 |
| 81.31.176.0/22 | AS12660Sharif University Of Technology | Iran | Not found | 17 | 2026-10-02 |
| 81.31.180.0/22 | AS12660Sharif University Of Technology | Iran | Not found | 17 | 2026-10-02 |
| 81.31.186.0/24 | AS12660Sharif University Of Technology | Iran | Not found | 17 | 2026-10-02 |
| 81.31.192.0/24 | AS215730H2NEXUS CLOUD SERVICES - FZCO | United States | Valid | 17 | 2026-10-02 |
| 81.31.193.0/24 | AS398781OCULUS NETWORKS INC | United States | Valid | 18 | 2026-10-02 |
| 81.31.194.0/24 | AS208220Offerhost Solutions Inc | United States | Valid | 17 | 2026-10-02 |
| 81.31.195.0/24 | AS208220Offerhost Solutions Inc | United States | Valid | 17 | 2026-10-02 |
| 81.31.196.0/24 | AS211216Protese S.L. | Spain | Valid | 17 | 2026-10-02 |
| 81.31.197.0/24 | AS204601NovoServe B.V. | The Netherlands | Valid | 17 | 2026-10-02 |
| 81.31.198.0/24 | AS211415Karolio IT paslaugos, UAB | Japan | Valid | 17 | 2026-10-02 |
| 81.31.199.0/24 | AS208208Marco Lingl trading as Cyberse GmbH & Co. KG | Germany | Valid | 17 | 2026-10-02 |
| 81.31.200.0/23 | AS44521Jagex Limited | United Kingdom | Not found | 17 | 2026-10-02 |
| 81.31.202.0/23 | AS44521Jagex Limited | Germany | Not found | 17 | 2026-10-02 |
| 81.31.204.0/22 | AS197383ACTIVIUM INFORMATION DESIGN SAS | France | Not found | 17 | 2026-10-02 |
| 81.31.204.0/24 | AS197383ACTIVIUM INFORMATION DESIGN SAS | France | Not found | 1 | 2026-10-29 |
| 81.31.205.0/24 | AS197383ACTIVIUM INFORMATION DESIGN SAS | France | Not found | 1 | 2026-10-29 |
| 81.31.206.0/24 | AS197383ACTIVIUM INFORMATION DESIGN SAS | France | Not found | 1 | 2026-10-29 |
| 81.31.208.0/24 | AS59253LEASEWEB SINGAPORE PTE. LTD. | The Netherlands | Valid | 17 | 2026-10-02 |
| 81.31.209.0/24 | AS207513LLC "HOSTOFF CSL" | The Netherlands | Valid | 17 | 2026-10-02 |
| 81.31.210.0/24 | AS214716WEYRO LTD | Germany | Valid | 17 | 2026-10-02 |
| 81.31.211.0/24 | AS214716WEYRO LTD | Germany | Valid | 17 | 2026-10-02 |
| 81.31.212.0/24 | AS211431Andrew Aubury | United Kingdom | Valid | 18 | 2026-10-02 |
| 81.31.213.0/24 | AS214456ServerSP LLC | United States | Valid | 18 | 2026-10-02 |
| 81.31.214.0/24 | AS198016Michael Kieser | Germany | Valid | 17 | 2026-10-02 |
| 81.31.215.0/24 | AS206292Gerdriaan Mulder | The Netherlands | Valid | 17 | 2026-10-02 |
| 81.31.224.0/24 | AS57235Chapar Rasaneh LLC | Iran | Valid | 17 | 2026-10-02 |
| 81.31.225.0/24 | AS57235Chapar Rasaneh LLC | Iran | Valid | 17 | 2026-10-02 |
| 81.31.226.0/24 | AS57235Chapar Rasaneh LLC | Iran | Valid | 17 | 2026-10-02 |
| 81.31.227.0/24 | AS57235Chapar Rasaneh LLC | Iran | Valid | 17 | 2026-10-02 |
| 81.31.228.0/24 | AS56815GeniusMind S.A. | Iran | Valid | 17 | 2026-10-02 |
| 81.31.229.0/24 | AS57235Chapar Rasaneh LLC | Iran | Valid | 17 | 2026-10-02 |
| 81.31.230.0/24 | AS56815GeniusMind S.A. | Iran | Valid | 17 | 2026-10-02 |
| 81.31.231.0/24 | AS214271ICONIC PROTECH LTD | United Kingdom | Valid | 17 | 2026-10-02 |
| 81.31.232.0/24 | AS401443WAP.AC LLC | United States | Valid | 17 | 2026-10-02 |
| 81.31.233.0/24 | AS57235Chapar Rasaneh LLC | Iran | Valid | 17 | 2026-10-02 |
| 81.31.234.0/24 | AS149766Y.U.T Corporate Company Limited | Thailand | Valid | 17 | 2026-10-02 |
| 81.31.235.0/24 | AS212609Karolio IT paslaugos, UAB | Poland | Valid | 17 | 2026-10-02 |
| 81.31.236.0/24 | AS57235Chapar Rasaneh LLC | Iran | Valid | 17 | 2026-10-02 |
| 81.31.238.0/24 | AS56815GeniusMind S.A. | Iran | Valid | 17 | 2026-10-02 |
| 81.31.239.0/24 | AS57235Chapar Rasaneh LLC | Iran | Valid | 17 | 2026-10-02 |
| 81.31.240.0/24 | AS57235Chapar Rasaneh LLC | Iran | Valid | 17 | 2026-10-02 |
| 81.31.241.0/24 | AS57235Chapar Rasaneh LLC | Iran | Valid | 17 | 2026-10-02 |
| 81.31.242.0/23 | AS61317Hivelocity LLC | Germany | Valid | 17 | 2026-10-02 |
| 81.31.242.0/24 | AS29802HIVELOCITY, Inc. | Germany | Valid | 17 | 2026-10-02 |
| 81.31.243.0/24 | AS29802HIVELOCITY, Inc. | Germany | Valid | 17 | 2026-10-02 |
| 81.31.244.0/24 | AS210976Timeweb, LLP | The Netherlands | Valid | 17 | 2026-10-02 |
| 81.31.245.0/24 | AS210976Timeweb, LLP | The Netherlands | Valid | 17 | 2026-10-02 |
| 81.31.246.0/24 | AS9123JSC "TIMEWEB" | Russia | Valid | 18 | 2026-10-02 |
| 81.31.247.0/24 | AS57494Adman LLC | Russia | Valid | 18 | 2026-10-02 |
| 81.31.248.0/24 | AS57235Chapar Rasaneh LLC | Iran | Valid | 17 | 2026-10-02 |
| 81.31.250.0/24 | AS57235Chapar Rasaneh LLC | Iran | Valid | 17 | 2026-10-02 |
| 81.31.252.0/22 | AS56876Ociris GmbH | Germany | Valid | 17 | 2026-10-02 |
Every /24 inside it
00 · Evaluate
Test the real build first.
An evaluation license puts a full current build in your hands, with no sampling, so you can measure it against your own traffic before anyone talks about terms.
01 · License
Then license what you use.
Standard, for detection and decisions inside your own product and operations.
Redistribution, when the data ships onward inside what you sell, priced by scope rather than by seat.
Annual terms, a named contact, and monthly, quarterly or yearly payment.