[apops] The CIDR Report
This report has been generated at Fri Aug 2 21:45:45 2019 AEST. The report analyses the BGP Routing Table as seen within AS131072 and generates a report on aggregation potential within the table. Check https://www.cidr-report.org/v6 for a current version of this report. Recent Table History Date PrefixesCIDR Agg 26-07-19 72682 43458 27-07-19 72824 43506 28-07-19 72825 43555 29-07-19 72850 43611 30-07-19 72951 43689 31-07-19 73270 43892 01-08-19 73370 43813 02-08-19 73337 43813 AS Summary 17730 Number of ASes in routing system 11473 Number of ASes announcing only one prefix 1273 Largest number of prefixes announced by an AS AS12479: UNI2-AS, ES 36318243520512 (/18.95) Largest address span announced by an AS (/64s) AS7922 : COMCAST-7922 - Comcast Cable Communications, LLC, US Aggregation Summary The algorithm used in this report proposes aggregation only when there is a precise match using the AS path, so as to preserve traffic transit policies. --- 02Aug19 --- ASnumNetsNow NetsAggr NetGain % Gain Description Table 73445439522949340.2% All ASes AS12479 12735 126899.6% UNI2-AS, ES AS28573 1105 130 97588.2% CLARO S.A., BR AS11172 1174 222 95281.1% Alestra, S. de R.L. de C.V., MX AS22773 989 149 84084.9% ASN-CXA-ALL-CCI-22773-RDC - Cox Communications Inc., US AS7552 7907 78399.1% VIETEL-AS-AP Viettel Group, VN AS8376 1194 442 75263.0% , JO AS45609 866 129 73785.1% BHARTI-MOBILITY-AS-AP Bharti Airtel Ltd. AS for GPRS Service, IN AS32098 702 69 63390.2% TRANSTELCO-INC - Transtelco Inc, US AS33363 684 99 58585.5% BHN-33363 - Charter Communications, Inc, US AS30036 919 452 46750.8% MEDIACOM-ENTERPRISE-BUSINESS - Mediacom Communications Corp, US AS45271 604 161 44373.3% ICLNET-AS-AP Idea Cellular Limited, IN AS16509 1021 620 40139.3% AMAZON-02 - Amazon.com, Inc., US AS13361 597 213 38464.3% VODAFONE-AS-AP Vodafone Australia Pty Ltd, AU AS9829 450 99 35178.0% BSNL-NIB National Internet Backbone, IN AS9808 355 32 32391.0% CMNET-GD Guangdong Mobile Communication Co.Ltd., CN AS4134 483 181 30262.5% CHINANET-BACKBONE No.31,Jin-rong Street, CN AS13142 337 35 30289.6% MOBIFONE-AS-VN MOBIFONE Corporation, VN AS174432 138 29468.1% COGENT-174 - Cogent Communications, US AS9605 272 14 25894.9% DOCOMO NTT DOCOMO, INC., JP AS13206 2581 25799.6% REALMOVE-AS-AP Realmove Company Limited, TH AS24173 2582 25699.2% NETNAM-AS-AP Netnam Company, VN AS55430 291 38 25386.9% STARHUB-NGNBN Starhub Ltd, SG AS3462 268 54 21479.9% HINET Data Communication Business Group, TW AS4808 230 31 19986.5% CHINA169-BJ China Unicom Beijing Province Network, CN AS17552 241 48 19380.1% TRUE-AS-AP True Internet Co.,Ltd., TH AS54113 619 429 19030.7% FASTLY - Fastly, US AS8151 292 108 18463.0% Uninet S.A. de C.V., MX AS38266 274 100 17463.5% VODAFONE-IN Vodafone India Ltd., IN AS22394 674 509 16524.5% CELLCO - Cellco Partnership DBA Verizon Wireless, US AS24158 195 32 16383.6% TAIWANMOBILE-AS Taiwan Mobile Co., Ltd., TW Total 17847
[apops] BGP Update Report
BGP Update Report Interval: 18-Jul-19 -to- 01-Aug-19 (14 days) Observation Point: BGP Peering with AS131072 TOP 20 Unstable Origin AS Rank ASNUpds % Upds/PfxAS-Name 1 - AS18403 3095264 27.6%1875.9 -- FPT-AS-AP The Corporation for Financing & Promoting Technology, VN 2 - AS131178 392647 3.5%2566.3 -- KINGCORP-KH OpenNet ISP Cambodia, KH 3 - AS6762 345807 3.1% 21612.9 -- SEABONE-NET TELECOM ITALIA SPARKLE S.p.A., IT 4 - AS9829 232627 2.1% 110.1 -- BSNL-NIB National Internet Backbone, IN 5 - AS45539 137663 1.2%2333.3 -- VTCWLB-AS-VN VTCWLB-, VN 6 - AS131429 125196 1.1%1625.9 -- MOBIFONE-AS-VN MOBIFONE Corporation, VN 7 - AS38735 102206 0.9%2174.6 -- GDS-AS-VN Global Data Service Joint Stock Company, VN 8 - AS804895903 0.9% 281.2 -- CANTV Servicios, Venezuela, VE 9 - AS614789686 0.8% 139.0 -- Telefonica del Peru S.A.A., PE 10 - AS27738 88810 0.8% 105.0 -- Ecuadortelecom S.A., EC 11 - AS13904 82366 0.7% 905.1 -- COSLINK - Cherryland Services Inc, US 12 - AS47331 74567 0.7% 12.7 -- TTNET, TR 13 - AS256168260 0.6% 886.5 -- EUN, EG 14 - AS45894 67451 0.6%2325.9 -- FPTONLINE-AS-VN FPT Online JSC, VN 15 - AS16509 64307 0.6% 74.0 -- AMAZON-02 - Amazon.com, Inc., US 16 - AS815160842 0.5% 11.8 -- Uninet S.A. de C.V., MX 17 - AS262691 58603 0.5% 430.9 -- CONECTA LTDA., BR 18 - AS45538 57863 0.5% 512.1 -- ODS-AS-VN Online data services, VN 19 - AS793949028 0.4% 49028.0 -- UNIVCENTFLA - University of Central Florida, US 20 - AS38244 41108 0.4% 806.0 -- VNNIC-AS-VN Trung tam VNNIC, VN TOP 20 Unstable Origin AS (Updates per announced prefix) Rank ASNUpds % Upds/PfxAS-Name 1 - AS793949028 0.4% 49028.0 -- UNIVCENTFLA - University of Central Florida, US 2 - AS6762 345807 3.1% 21612.9 -- SEABONE-NET TELECOM ITALIA SPARKLE S.p.A., IT 3 - AS63511 20016 0.2% 20016.0 -- IDNIC-PELINDO3-ID PT Pelabuhan Indonesia III (Persero), ID 4 - AS383234630 0.3% 17315.0 -- CINE-NET - Cinenet Communications, US 5 - AS18465 14094 0.1% 14094.0 -- WORKDAY-01 - Workday, Inc., US 6 - AS945912765 0.1%6382.5 -- ASKONKUK Konkuk University, KR 7 - AS3975926294 0.1%6294.0 -- NTHWEB-AS-01 - NTHWEB, CA 8 - AS138659 25324 0.2%5064.8 -- CYBERLINK-AS-AP Cyberlink Online, BD 9 - AS138847 12438 0.1%4146.0 -- ADSNET-AS-ID PT. AMBHARA DUTA SHANTI, ID 10 - AS1373078039 0.1%4019.5 -- IDNIC-NAM-AS-ID PT Nielsen Audience Measurment, ID 11 - AS112223568 0.0%3568.0 -- PRL - Polo Ralph Lauren, US 12 - AS152177096 0.1%3548.0 -- HPES-AUTOMATED-OPERATIONS-AOPS - Hewlett-Packard Company, US 13 - AS30321 10496 0.1%3498.7 -- BURNINGMAN - Burning Man, US 14 - AS19058 18573 0.2%3095.5 -- IRTC-NET - Illinois Rural Telecommunication Co., US 15 - AS284263087 0.0%3087.0 -- 16 - AS325088992 0.1%2997.3 -- GSINET - Granite State Communications, US 17 - AS136907 22239 0.2%2779.9 -- HWCLOUDS-AS-AP HUAWEI CLOUDS, HK 18 - AS1359695231 0.1%2615.5 -- SENDO-AS-VN Sen Do Technology Joint Stock Company, VN 19 - AS131178 392647 3.5%2566.3 -- KINGCORP-KH OpenNet ISP Cambodia, KH 20 - AS18014 17955 0.2%2565.0 -- CITYLINK-SR-AS-AP CityLink Corporation, LTD, Siem Reap, KH TOP 20 Unstable Prefixes Rank Prefix Upds % Origin AS -- AS Name 1 - 201.183.255.0/24 54821 0.5% AS27738 -- Ecuadortelecom S.A., EC 2 - 132.170.30.0/23 49028 0.4% AS7939 -- UNIVCENTFLA - University of Central Florida, US 3 - 172.83.45.0/2430222 0.3% AS46562 -- TOTAL-SERVER-SOLUTIONS - Total Server Solutions L.L.C., US 4 - 23.35.212.0/2227446 0.2% AS6762 -- SEABONE-NET TELECOM ITALIA SPARKLE S.p.A., IT 5 - 23.50.160.0/2026985 0.2% AS6762 -- SEABONE-NET TELECOM ITALIA SPARKLE S.p.A., IT 6 - 64.68.236.0/2225295 0.2% AS13904 -- COSLINK - Cherryland Services Inc, US 7 - 23.50.184.0/2225202 0.2% AS6762 -- SEABONE-NET TELECOM ITALIA SPARKLE S.p.A., IT 8 - 23.50.188.0/2224930 0.2% AS6762 -- SEABONE-NET TELECOM ITALIA SPARKLE S.p.A., IT 9 - 2.16.70.0/23 24850 0.2% AS6762 -- SEABONE-NET TELECOM ITALIA SPARKLE S.p.A., IT 10 - 216.238.254.0/23 24634 0.2% AS13904 -- COSLINK - Cherryland Services Inc, US 11 - 23.50.176.0/2024478 0.2% AS6762 -- SEABONE-NET TELECOM ITALIA SPARKLE S.p.A., IT 12 - 88.221.100.0/22 24284 0.2% AS6762 -- SEABONE-NET TELECOM ITALIA SPARKLE S.p.A., IT 13 - 88.221.28.0/2224166 0.2% AS6762 --
[apops] The CIDR Report
This report has been generated at Fri Aug 2 21:16:30 2019 AEST. The report analyses the eBGP Routing Table at AS131072 and generates a report on aggregation potential within the table. Check https://www.cidr-report.org/2.0 for a current version of this report. Recent Table History Date PrefixesCIDR Agg 26-07-19788783 432386 27-07-19789374 432301 28-07-19789131 432251 29-07-19789064 432219 30-07-19788835 432465 31-07-1972 432084 01-08-19788869 432054 02-08-19788634 432473 AS Summary 65247 Number of ASes in routing system 23746 Number of ASes announcing only one prefix 6202 Largest number of prefixes announced by an AS AS8151 : Uninet S.A. de C.V., MX 115794432 Largest address span announced by an AS (/32s) AS4134 : CHINANET-BACKBONE No.31,Jin-rong Street, CN Aggregation Summary The algorithm used in this report proposes aggregation only when there is a precise match using the AS path, so as to preserve traffic transit policies. Aggregation is also proposed across non-advertised address space ('holes'). --- 02Aug19 --- ASnumNetsNow NetsAggr NetGain % Gain Description Table 788917 432419 35649845.2% All ASes AS8151 6202 1038 516483.3% Uninet S.A. de C.V., MX AS39891 3780 27 375399.3% ALJAWWALSTC-AS, SA AS7155 4064 441 362389.1% VIASAT-SP-BACKBONE - ViaSat,Inc., US AS6327 3541 91 345097.4% SHAW - Shaw Communications Inc., CA AS22773 3446 165 328195.2% ASN-CXA-ALL-CCI-22773-RDC - Cox Communications Inc., US AS7552 3223 125 309896.1% VIETEL-AS-AP Viettel Group, VN AS8551 3327 463 286486.1% BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbone, IL AS12479 5474 2706 276850.6% UNI2-AS, ES AS9808 2729 242 248791.1% CMNET-GD Guangdong Mobile Communication Co.Ltd., CN AS47331 5169 2768 240146.4% TTNET, TR AS7545 4883 2824 205942.2% TPG-INTERNET-AP TPG Telecom Limited, AU AS45899 3108 1117 199164.1% VNPT-AS-VN VNPT Corp, VN AS31334 2665 722 194372.9% KABELDEUTSCHLAND-AS, DE AS4755 2147 250 189788.4% TATACOMM-AS TATA Communications formerly VSNL is Leading ISP, IN AS11492 3688 1840 184850.1% CABLEONE - CABLE ONE, INC., US AS11830 2692 900 179266.6% Instituto Costarricense de Electricidad y Telecom., CR AS18566 2093 349 174483.3% MEGAPATH5-US - MegaPath Corporation, US AS7713 2225 593 163273.3% TELKOMNET-AS-AP PT Telekomunikasi Indonesia, ID AS20115 2151 531 162075.3% CHARTER-20115 - Charter Communications, US AS9394 2073 469 160477.4% CTTNET China TieTong Telecommunications Corporation, CN AS12389 2357 775 158267.1% ROSTELECOM-AS, RU AS13470 1869 340 152981.8% ITACE-AS-AP Itace International Limited, HK AS6389 1559 72 148795.4% BELLSOUTH-NET-BLK - AT Corp., US AS45090 1736 418 131875.9% CNNIC-TENCENT-NET-AP Shenzhen Tencent Computer Systems Company Limited, CN AS9829 2689 1476 121345.1% BSNL-NIB National Internet Backbone, IN AS16509 2976 1812 116439.1% AMAZON-02 - Amazon.com, Inc., US AS56041 1217 55 116295.5% CMNET-ZHEJIANG-AP China Mobile communications corporation, CN AS17974 1172 48 112495.9% TELKOMNET-AS2-AP PT Telekomunikasi Indonesia, ID AS28573 1364 255 110981.3% CLARO S.A., BR AS7303 1475
[apops] IPv6 BGP Update Report
IPv6 BGP Update Report Interval: 04-Nov-18 -to- 18-Nov-18 (14 days) Observation Point: BGP Peering with AS131072 TOP 20 Unstable Origin AS Rank ASNUpds % Upds/PfxAS-Name 1 - AS22773 1590469 4.1%1581.0 -- ASN-CXA-ALL-CCI-22773-RDC - Cox Communications Inc., US 2 - AS45609 1297520 3.4%1603.9 -- BHARTI-MOBILITY-AS-AP Bharti Airtel Ltd. AS for GPRS Service, IN 3 - AS32098 998695 2.6%1577.7 -- TRANSTELCO-INC - Transtelco Inc, US 4 - AS33363 975429 2.5%1489.2 -- BHN-TAMPA - Charter Communications, Inc, US 5 - AS30036 911027 2.4%1318.4 -- MEDIACOM-ENTERPRISE-BUSINESS - Mediacom Communications Corp, US 6 - AS133612 713312 1.8%1390.5 -- VODAFONE-AS-AP Vodafone Australia Pty Ltd, AU 7 - AS16509 564341 1.5% 868.2 -- AMAZON-02 - Amazon.com, Inc., US 8 - AS9808 522526 1.4%1612.7 -- CMNET-GD Guangdong Mobile Communication Co.Ltd., CN 9 - AS55430 467436 1.2%1617.4 -- STARHUB-NGNBN Starhub Ltd, SG 10 - AS132061 418828 1.1%1623.4 -- REALMOVE-AS-AP Realmove Company Limited, TH 11 - AS45271 341417 0.9% 717.3 -- ICLNET-AS-AP Idea Cellular Limited, IN 12 - AS42 289038 0.8%1588.1 -- WOODYNET-1 - WoodyNet, US 13 - AS38266 270788 0.7%1388.7 -- VODAFONE-IN Vodafone India Ltd., IN 14 - AS17552 248709 0.6%1604.6 -- TRUE-AS-AP True Internet Co.,Ltd., TH 15 - AS12041 245423 0.6%1071.7 -- AS-AFILIAS1 - Afilias, Inc., US 16 - AS52257 243681 0.6%1331.6 -- Telconet S.A, EC 17 - AS7497 239681 0.6%1556.4 -- CSTNET-AS-AP Computer Network Information Center, CN 18 - AS133159 212656 0.6%1575.2 -- MAMMOTHMEDIA-AS-AP Mammoth Media Pty Ltd, AU 19 - AS10143 179688 0.5%1590.2 -- EXETEL-AS-AP Exetel Pty Ltd, AU 20 - AS36351 176348 0.5%1617.9 -- SOFTLAYER - SoftLayer Technologies Inc., US TOP 20 Unstable Origin AS (Updates per announced prefix) Rank ASNUpds % Upds/PfxAS-Name 1 - AS32629 22700 0.1% 22700.0 -- CITY-OF-CHARLOTTE-ASN - City of Charlotte, US 2 - AS989012445 0.0% 12445.0 -- ATOSINFOTECH-SG-AP ATOS Information Technology (Singapore) Pte Ltd, SG 3 - AS132915 10739 0.0% 10739.0 -- MOBILEONELTD-AS-NGNBN M1 Limited/ Next Generation Broadband Network, SG 4 - AS48767 18985 0.1%9492.5 -- TOMBII-NET TOMBII-NET, SE 5 - AS345546469 0.0%6469.0 -- ANTANET Antares Kommunikationstechnik AG, CH 6 - AS137413 21454 0.1%5363.5 -- SANVIT-AS-AP Sanvit, KR 7 - AS1384064873 0.0%4873.0 -- CHOCOLATY CHOCOLATY NETWORKS Ltd., HK 8 - AS300309579 0.0%4789.5 -- SIMPLEXITY - Wal-Mart Stores, Inc., US 9 - AS31424 39393 0.1%4377.0 -- NEXELLENT-AS AS31424 is operated by:, CH 10 - AS303614030 0.0%4030.0 -- SWIFTWILL2 - Swiftwill, Inc., US 11 - AS2650633905 0.0%3905.0 -- COMETA TELECOMUNICACOES E SERVICOS LTDA, BR 12 - AS281783859 0.0%3859.0 -- Networld Provedor e Servicos de Internet Ltda, BR 13 - AS243413786 0.0%3786.0 -- AID-NET-AS-AP All Interactive (Multihoming ASN), AU 14 - AS327693 11160 0.0%3720.0 -- ECHO-SP, ZA 15 - AS2630433633 0.0%3633.0 -- WIFF Telecom Eireli, BR 16 - AS16657 32308 0.1%3589.8 -- FIBERTECH-NETWORKS-AS-ROC-NY-US - Fibertech Networks, LLC, US 17 - AS692113871 0.0%3467.8 -- ARACHNITEC - Arachnitec, INC., US 18 - AS2621443431 0.0%3431.0 -- Rayservers GmbH, PA 19 - AS119923228 0.0%3228.0 -- CENTENNIAL-PR - AT Mobility Puerto Rico, PR 20 - AS1374422808 0.0%2808.0 -- CAIRNSAIRPORT-AS-AP Cairns Airport Pty Ltd, AU TOP 20 Unstable Prefixes Rank Prefix Upds % Origin AS -- AS Name 1 - 2a0d:8d80::/3239361 0.1% AS31424 -- NEXELLENT-AS AS31424 is operated by:, CH 2 - 2620:11a:a0f0::/ 37638 0.1% AS36040 -- YOUTUBE - Google LLC, US 3 - 2607:f7a8:400::/ 34657 0.1% AS16657 -- FIBERTECH-NETWORKS-AS-ROC-NY-US - Fibertech Networks, LLC, US AS46887 -- LIGHTOWER - Lightower Fiber Networks I, LLC, US 4 - 2620:0:2f0::/48 22700 0.1% AS32629 -- CITY-OF-CHARLOTTE-ASN - City of Charlotte, US 5 - 2a03:8160:14::/4 17597 0.1% AS33047 -- INSTART - Instart Logic, Inc, US 6 - 2a07:1a80:1::/48 17368 0.0% AS48767 -- TOMBII-NET TOMBII-NET, SE 7 - 2604:50c0:2::/48 13284 0.0% AS6921 -- ARACHNITEC - Arachnitec, INC., US 8 - 2a0c:da04:3c1::/ 13259 0.0% AS202365 -- CHRONOS, TR 9 - 2a06:7243:19::/4 13257 0.0% AS202365 -- CHRONOS, TR 10 - 2a0c:da04:3c0::/ 13255 0.0% AS202365 -- CHRONOS, TR 11 - 2a00:ad87:4600:: 12445 0.0% AS9890 -- ATOSINFOTECH-SG-AP ATOS Information Technology
[apops] Weekly Routing Table Report
This is an automated weekly mailing describing the state of the Internet Routing Table as seen from APNIC's router in Japan. The posting is sent to APOPS, NANOG, AfNOG, SANOG, PacNOG, SAFNOG TZNOG, MENOG, BJNOG, SDNOG, CMNOG, LACNOG and the RIPE Routing WG. Daily listings are sent to bgp-st...@lists.apnic.net For historical data, please see http://thyme.rand.apnic.net. If you have any comments please contact Philip Smith . Routing Table Report 04:00 +10GMT Sat 03 Aug, 2019 Report Website: http://thyme.rand.apnic.net Detailed Analysis: http://thyme.rand.apnic.net/current/ Analysis Summary BGP routing table entries examined: 766119 Prefixes after maximum aggregation (per Origin AS): 295002 Deaggregation factor: 2.60 Unique aggregates announced (without unneeded subnets): 368513 Total ASes present in the Internet Routing Table: 65068 Prefixes per ASN: 11.77 Origin-only ASes present in the Internet Routing Table: 55956 Origin ASes announcing only one prefix: 23986 Transit ASes present in the Internet Routing Table:9112 Transit-only ASes present in the Internet Routing Table:287 Average AS path length visible in the Internet Routing Table: 4.5 Max AS path length visible: 42 Max AS path prepend of ASN ( 27978) 31 Prefixes from unregistered ASNs in the Routing Table:24 Number of instances of unregistered ASNs:24 Number of 32-bit ASNs allocated by the RIRs: 28103 Number of 32-bit ASNs visible in the Routing Table: 22950 Prefixes from 32-bit ASNs in the Routing Table: 103973 Number of bogon 32-bit ASNs visible in the Routing Table:14 Special use prefixes present in the Routing Table:0 Prefixes being announced from unallocated address space:286 Number of addresses announced to Internet: 2842112000 Equivalent to 169 /8s, 103 /16s and 48 /24s Percentage of available address space announced: 76.8 Percentage of allocated address space announced: 76.8 Percentage of available address space allocated: 100.0 Percentage of address space in use by end-sites: 99.3 Total number of prefixes smaller than registry allocations: 256375 APNIC Region Analysis Summary - Prefixes being announced by APNIC Region ASes: 206466 Total APNIC prefixes after maximum aggregation: 61655 APNIC Deaggregation factor:3.35 Prefixes being announced from the APNIC address blocks: 201513 Unique aggregates announced from the APNIC address blocks:84021 APNIC Region origin ASes present in the Internet Routing Table:9933 APNIC Prefixes per ASN: 20.29 APNIC Region origin ASes announcing only one prefix: 2753 APNIC Region transit ASes present in the Internet Routing Table: 1480 Average APNIC Region AS path length visible:4.6 Max APNIC Region AS path length visible: 27 Number of APNIC region 32-bit ASNs visible in the Routing Table: 4936 Number of APNIC addresses announced to Internet: 771136640 Equivalent to 45 /8s, 246 /16s and 156 /24s APNIC AS Blocks4608-4864, 7467-7722, 9216-10239, 17408-18431 (pre-ERX allocations) 23552-24575, 37888-38911, 45056-46079, 55296-56319, 58368-59391, 63488-64098, 64297-64395, 131072-141625 APNIC Address Blocks 1/8, 14/8, 27/8, 36/8, 39/8, 42/8, 43/8, 49/8, 58/8, 59/8, 60/8, 61/8, 101/8, 103/8, 106/8, 110/8, 111/8, 112/8, 113/8, 114/8, 115/8, 116/8, 117/8, 118/8, 119/8, 120/8, 121/8, 122/8, 123/8, 124/8, 125/8, 126/8, 133/8, 150/8, 153/8, 163/8, 171/8, 175/8, 180/8, 182/8, 183/8, 202/8, 203/8, 210/8, 211/8, 218/8, 219/8, 220/8, 221/8, 222/8, 223/8, ARIN Region Analysis Summary Prefixes being announced by ARIN Region ASes:226639 Total ARIN prefixes after maximum aggregation: 105937 ARIN Deaggregation factor: 2.14 Prefixes being announced from the ARIN address blocks: 225670 Unique aggregates announced from the ARIN address blocks:107080 ARIN Region origin ASes present in the Internet Routing Table:18544 ARIN Prefixes per ASN:12.17 ARIN