This is an automated weekly mailing describing the state of the IPv4 Research & Education Routing Table received by NSRC's collector from RENU's network. Daily listings are sent to ren-bgp-stats-all@lists.nsrc.org. For historical data, please see https://bgp.nsrc.org. If you have any comments please contact Philip Smith . IPv4 R&E Routing Table Report 18:40 GMT Sat 17 May, 2025 IPv4 BGP Table (Global) as seen at RENU. Report Website: https://bgp.nsrc.org/REN Detailed Analysis: https://bgp.nsrc.org/REN/RENU/ Analysis Summary ---------------- BGP routing table entries examined: 1001774 Prefixes after maximum aggregation (per Origin AS): 378785 Deaggregation factor: 2.64 Unique aggregates announced (without unneeded subnets): 479512 Number of IPv4 prefixes with a valid ROA: 557514 Number of IPv4 prefixes with an invalid ROA: 480 Number of IPv4 prefixes with no ROA: 443780 Total ASes present in the Internet Routing Table: 76842 Prefixes per ASN: 13.04 Origin-only ASes present in the Internet Routing Table: 65949 Origin ASes announcing only one prefix: 26563 Transit ASes present in the Internet Routing Table: 10893 Transit-only ASes present in the Internet Routing Table: 550 Paths with bogon ASNs present in the IPv4 Routing Table: 82 Average AS path length visible in the Internet Routing Table: 5.0 Max AS path length visible: 156 Max AS path prepend of ASN (153737) 150 Prefixes from unregistered ASNs in the Routing Table: 1009 Number of instances of unregistered ASNs: 1010 Number of 32-bit ASNs allocated by the RIRs: 46439 Number of 32-bit ASNs visible in the Routing Table: 38258 Prefixes from 32-bit ASNs in the Routing Table: 209217 Number of bogon 32-bit ASNs visible in the Routing Table: 19 Special use prefixes present in the Routing Table: 1 Prefixes being announced from unallocated address space: 449 Number of addresses announced to Internet: 3109497088 Equivalent to 185 /8s, 87 /16s and 41 /24s Percentage of available address space announced: 84.0 Percentage of allocated address space announced: 84.0 Percentage of available address space allocated: 100.0 Percentage of address space in use by end-sites: 99.6 Total number of prefixes smaller than registry allocations: 330701 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 258987 Total APNIC prefixes after maximum aggregation: 76934 APNIC Deaggregation factor: 3.37 Prefixes being announced from the APNIC address blocks: 250113 Unique aggregates announced from the APNIC address blocks: 103072 APNIC Region origin ASes present in the Internet Routing Table: 14579 APNIC Prefixes per ASN: 17.16 APNIC Region origin ASes announcing only one prefix: 4438 APNIC Region transit ASes present in the Internet Routing Table: 1933 Average APNIC Region AS path length visible: 5.3 Max APNIC Region AS path length visible: 156 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10118 Number of APNIC addresses announced to Internet: 748520192 Equivalent to 44 /8s, 157 /16s and 131 /24s APNIC AS Blocks 4608-4864, 7467-7722, 9216-10239, 17408-18431 (pre-ERX allocations) 23552-24575, 37888-38911, 45056-46079, 55296-56319, 58368-59391, 63488-64098, 64297-64395, 131072-155961 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: 293303 Total ARIN prefixes after maximum aggregation: 130719 ARIN Deaggregation factor: 2.24 Prefixes being announced from the ARIN address blocks: 294861 Unique aggregates announced from the ARIN address blocks: 138685 ARIN Region origin ASes present in the Internet Routing Table: 19223 ARIN Prefixes per ASN: 15.34 ARIN Region origin ASes announcing only one prefix: 7045 ARIN Region transit ASes present in the Internet Routing Table: 1952 Average ARIN Region AS path length visible: 4.8 Max ARIN Region AS path length visible: 25 Number of ARIN region 32-bit ASNs visible in the Routing Table: 5209 Number of ARIN addresses announced to Internet: 1352545024 Equivalent to 80 /8s, 158 /16s and 51 /24s ARIN AS Blocks 1-1876, 1902-2042, 2044-2046, 2048-2106 (pre-ERX allocations) 2138-2584, 2615-2772, 2823-2829, 2880-3153 3354-4607, 4865-5119, 5632-6655, 6912-7466 7723-8191, 10240-12287, 13312-15359, 16384-17407 18432-20479, 21504-23551, 25600-26591, 26624-27647, 29696-30719, 31744-33791 35840-36863, 39936-40959, 46080-47103 53248-55295, 62464-63487, 64198-64296, 393216-402332 ARIN Address Blocks 3/8, 4/8, 6/8, 7/8, 8/8, 9/8, 11/8, 12/8, 13/8, 15/8, 16/8, 17/8, 18/8, 19/8, 20/8, 21/8, 22/8, 23/8, 24/8, 26/8, 28/8, 29/8, 30/8, 32/8, 33/8, 34/8, 35/8, 38/8, 40/8, 44/8, 45/8, 47/8, 48/8, 50/8, 52/8, 54/8, 55/8, 56/8, 63/8, 64/8, 65/8, 66/8, 67/8, 68/8, 69/8, 70/8, 71/8, 72/8, 73/8, 74/8, 75/8, 76/8, 96/8, 97/8, 98/8, 99/8, 100/8, 104/8, 107/8, 108/8, 128/8, 129/8, 130/8, 131/8, 132/8, 134/8, 135/8, 136/8, 137/8, 138/8, 139/8, 140/8, 142/8, 143/8, 144/8, 146/8, 147/8, 148/8, 149/8, 152/8, 155/8, 156/8, 157/8, 158/8, 159/8, 160/8, 161/8, 162/8, 164/8, 165/8, 166/8, 167/8, 168/8, 169/8, 170/8, 172/8, 173/8, 174/8, 184/8, 192/8, 198/8, 199/8, 204/8, 205/8, 206/8, 207/8, 208/8, 209/8, 214/8, 215/8, 216/8, RIPE Region Analysis Summary ---------------------------- Prefixes being announced by RIPE Region ASes: 277018 Total RIPE prefixes after maximum aggregation: 134081 RIPE Deaggregation factor: 2.07 Prefixes being announced from the RIPE address blocks: 274825 Unique aggregates announced from the RIPE address blocks: 174608 RIPE Region origin ASes present in the Internet Routing Table: 28954 RIPE Prefixes per ASN: 9.49 RIPE Region origin ASes announcing only one prefix: 12063 RIPE Region transit ASes present in the Internet Routing Table: 3956 Average RIPE Region AS path length visible: 4.7 Max RIPE Region AS path length visible: 27 Number of RIPE region 32-bit ASNs visible in the Routing Table: 12456 Number of RIPE addresses announced to Internet: 731070208 Equivalent to 43 /8s, 147 /16s and 63 /24s RIPE AS Blocks 1877-1901, 2043, 2047, 2107-2136, 2585-2614 (pre-ERX allocations) 2773-2822, 2830-2879, 3154-3353, 5377-5631 6656-6911, 8192-9215, 12288-13311, 15360-16383 20480-21503, 24576-25599, 28672-29695 30720-31743, 33792-35839, 38912-39935 40960-45055, 47104-52223, 56320-58367 59392-61439, 61952-62463, 64396-64495 196608-216475 RIPE Address Blocks 2/8, 5/8, 25/8, 31/8, 37/8, 46/8, 51/8, 53/8, 57/8, 62/8, 77/8, 78/8, 79/8, 80/8, 81/8, 82/8, 83/8, 84/8, 85/8, 86/8, 87/8, 88/8, 89/8, 90/8, 91/8, 92/8, 93/8, 94/8, 95/8, 109/8, 141/8, 145/8, 151/8, 176/8, 178/8, 185/8, 188/8, 193/8, 194/8, 195/8, 212/8, 213/8, 217/8, LACNIC Region Analysis Summary ------------------------------ Prefixes being announced by LACNIC Region ASes: 133369 Total LACNIC prefixes after maximum aggregation: 29523 LACNIC Deaggregation factor: 4.52 Prefixes being announced from the LACNIC address blocks: 128935 Unique aggregates announced from the LACNIC address blocks: 48861 LACNIC Region origin ASes present in the Internet Routing Table: 11244 LACNIC Prefixes per ASN: 11.47 LACNIC Region origin ASes announcing only one prefix: 2360 LACNIC Region transit ASes present in the Internet Routing Table: 2499 Average LACNIC Region AS path length visible: 5.5 Max LACNIC Region AS path length visible: 56 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9193 Number of LACNIC addresses announced to Internet: 171769088 Equivalent to 10 /8s, 60 /16s and 253 /24s LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247, 61440-61951, 64099-64197, 262144-274844 + ERX transfers LACNIC Address Blocks 177/8, 179/8, 181/8, 186/8, 187/8, 189/8, 190/8, 191/8, 200/8, 201/8, AfriNIC Region Analysis Summary ------------------------------- Prefixes being announced by AfriNIC Region ASes: 38088 Total AfriNIC prefixes after maximum aggregation: 6893 AfriNIC Deaggregation factor: 5.53 Prefixes being announced from the AfriNIC address blocks: 52591 Unique aggregates announced from the AfriNIC address blocks: 13890 AfriNIC Region origin ASes present in the Internet Routing Table: 1914 AfriNIC Prefixes per ASN: 27.48 AfriNIC Region origin ASes announcing only one prefix: 657 AfriNIC Region transit ASes present in the Internet Routing Table: 379 Average AfriNIC Region AS path length visible: 5.0 Max AfriNIC Region AS path length visible: 39 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1282 Number of AfriNIC addresses announced to Internet: 105374208 Equivalent to 6 /8s, 71 /16s and 226 /24s AfriNIC AS Blocks 36864-37887, 327680-329727 & ERX transfers AfriNIC Address Blocks 41/8, 102/8, 105/8, 154/8, 196/8, 197/8, APNIC Region per AS prefix count summary ---------------------------------------- ASN No of nets /20 equiv MaxAgg Description 9808 10989 8755 95 CHINAMOBILE-CN China Mobile Communication 7545 6161 842 649 TPG-INTERNET-AP TPG Telecom Limited, AU 18403 4433 347 25 FPT-AS-AP FPT Telecom Company, VN 9498 4284 533 300 BBIL-AP BHARTI Airtel Ltd., IN 7552 3897 1332 26 VIETEL-AS-AP Viettel Group, VN 7713 3696 1044 66 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3267 1869 101 VNPT-AS-VN VNPT Corp, VN 24560 2865 852 534 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 45090 2173 1439 86 TENCENT-NET-AP Shenzhen Tencent Computer 4755 2162 434 191 TATACOMM-AS TATA Communications formerly Complete listing at https://bgp.nsrc.org/REN/RENU/data-ASnet-APNIC ARIN Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 16509 13433 40826 5038 AMAZON-02, US 174 5339 8747 880 COGENT-174, US 11492 4727 313 592 CABLEONE, US 7155 3864 286 85 VIASAT-SP-BACKBONE, US 6327 3619 1320 81 SHAW, CA 22773 3344 3032 168 ASN-CXA-ALL-CCI-22773-RDC, US 749 3243 54815 2494 DNIC-AS-00749, US 396982 3164 3851 416 GOOGLE-CLOUD-PLATFORM, US 16625 3102 1298 2253 AKAMAI-AS, US 36352 2807 229 872 AS-COLOCROSSING, US Complete listing at https://bgp.nsrc.org/REN/RENU/data-ASnet-ARIN RIPE Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 12479 7694 1714 148 UNI2-AS, ES 39891 4797 293 62 ALJAWWALSTC-AS, SA 20940 4027 3395 126 AKAMAI-ASN1, NL 9009 3768 325 1954 M247, RO 12389 3070 2305 887 ROSTELECOM-AS PJSC Rostelecom. Technical 34984 2391 360 581 TELLCOM-AS, TR 212238 2148 151 1580 CDNEXT, GB 13188 1606 100 34 TRIOLAN, UA 8452 1593 1852 14 TE-AS TE-AS, EG 8551 1423 366 39 BEZEQ-INTERNATIONAL-AS Bezeqint Internet Complete listing at https://bgp.nsrc.org/REN/RENU/data-ASnet-RIPE LACNIC Region per AS prefix count summary ----------------------------------------- ASN No of nets /20 equiv MaxAgg Description 8151 12143 3249 582 UNINET, MX 10620 3499 480 1018 Telmex Colombia S.A., CO 13999 2518 540 364 Mega Cable, S.A. de C.V., MX 11830 1996 369 64 Instituto Costarricense de Electricidad y 28573 1358 2438 262 Claro NXT Telecomunicacoes Ltda, BR 3816 1338 785 210 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 11664 1204 278 33 Techtel LMDS Comunicaciones Interactivas 6147 1197 371 22 Telefonica del Peru S.A.A., PE 28202 1128 52 9 Rede Brasileira de Comunicacao SA, BR 22884 1062 68 380 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M Complete listing at https://bgp.nsrc.org/REN/RENU/data-ASnet-LACNIC AfriNIC Region per AS prefix count summary ------------------------------------------ ASN No of nets /20 equiv MaxAgg Description 24835 1778 632 28 RAYA-AS, EG 24863 1653 389 16 LINKdotNET-AS, EG 29571 1598 102 33 ORANGE-COTE-IVOIRE, CI 36992 1432 1519 280 ETISALAT-MISR, EG 20011 1295 204 345 INTERNET-SOLUTIONS, ZA 36903 1250 554 97 MT-MPLS, MA 37069 1107 1100 18 MOBINIL, EG 36935 1040 523 45 Vodafone-, EG 37457 587 316 32 Telkom-Internet, ZA 3741 560 661 319 IS, ZA Complete listing at https://bgp.nsrc.org/REN/RENU/data-ASnet-AFRINIC Global Per AS prefix count summary ---------------------------------- ASN No of nets /20 equiv MaxAgg Description 16509 13433 40826 5038 AMAZON-02, US 8151 12143 3249 582 UNINET, MX 9808 10989 8755 95 CHINAMOBILE-CN China Mobile Communication 12479 7694 1714 148 UNI2-AS, ES 7545 6161 842 649 TPG-INTERNET-AP TPG Telecom Limited, AU 174 5339 8747 880 COGENT-174, US 39891 4797 293 62 ALJAWWALSTC-AS, SA 11492 4727 313 592 CABLEONE, US 18403 4433 347 25 FPT-AS-AP FPT Telecom Company, VN 9498 4284 533 300 BBIL-AP BHARTI Airtel Ltd., IN Complete listing at https://bgp.nsrc.org/REN/RENU/data-ASnet Global Per AS Maximum Aggregation summary ----------------------------------------- ASN No of nets Net Savings Description 8151 12143 11561 UNINET, MX 9808 10989 10894 CHINAMOBILE-CN China Mobile Communications Grou 12479 7694 7546 UNI2-AS, ES 7545 6161 5512 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4797 4735 ALJAWWALSTC-AS, SA 174 5339 4459 COGENT-174, US 18403 4433 4408 FPT-AS-AP FPT Telecom Company, VN 11492 4727 4135 CABLEONE, US 9498 4284 3984 BBIL-AP BHARTI Airtel Ltd., IN 20940 4027 3901 AKAMAI-ASN1, NL Complete listing at https://bgp.nsrc.org/REN/RENU/data-CIDRnet List of Unregistered Origin ASNs (Global) ----------------------------------------- Bad AS Designation Net Originated Transit AS Transit AS Name 22542 UNALLOCATED 8.7.205.0/24 3356 LEVEL3, US 33123 UNALLOCATED 8.10.69.0/24 174 COGENT-174, US 12169 UNALLOCATED 8.15.207.0/24 32787 PROLEXIC-TECHNOLOGIES-D 46639 UNALLOCATED 8.17.66.0/24 701 UUNET, US 53775 UNALLOCATED 8.20.88.0/24 7029 WINDSTREAM, US 393266 UNALLOCATED 8.23.52.0/24 46887 CROWNCASTLE-AS46887, US 396894 UNALLOCATED 8.28.201.0/24 3356 LEVEL3, US 394936 UNALLOCATED 8.33.224.0/24 22442 HOU-PHONOSCOPE, US 54338 UNALLOCATED 8.33.241.0/24 3356 LEVEL3, US 46639 UNALLOCATED 8.38.73.0/24 3356 LEVEL3, US Complete listing at https://bgp.nsrc.org/REN/RENU/data-badAS Prefixes from the Special Purpose Address Registry (Global) ----------------------------------------------------------- Prefix Origin AS Description 192.88.99.0/24 6939 HURRICANE, US Complete listing at https://bgp.nsrc.org/REN/RENU/data-spar Advertised Unallocated Addresses -------------------------------- Unassigned Network ASN Information AS Name 14.192.20.0/22 Origin: 26658 HENGTONG-IDC-LLC, US 14.192.20.0/22 Transit: 6939 HURRICANE, US 23.140.216.0/24 Origin: 27176 DATAWAGON, US 23.140.216.0/24 Transit: 20278 NEXEON, US 23.141.0.0/24 Origin: 395350 RESERVED, ZZ 23.141.0.0/24 Transit: 11426 TWC-11426-CAROLINAS, US 23.147.240.0/24 Origin: 32302 RESERVED, ZZ 23.147.240.0/24 Transit: 32787 PROLEXIC-TECHNOLOGIES-DDOS-MITIGATION-NE 23.152.48.0/24 Origin: 46167 RESERVED, ZZ 23.152.48.0/24 Transit: 7018 ATT-INTERNET4, US Complete listing at https://bgp.nsrc.org/REN/RENU/data-add-IANA Number of prefixes announced per prefix length (Global) ------------------------------------------------------- /1:0 /2:0 /3:0 /4:0 /5:0 /6:0 /7:0 /8:16 /9:16 /10:41 /11:92 /12:299 /13:583 /14:1227 /15:2186 /16:14042 /17:8335 /18:13874 /19:24811 /20:44496 /21:52508 /22:113281 /23:106213 /24:619754 /25:0 /26:0 /27:0 /28:0 /29:0 /30:0 /31:0 /32:0 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 12479 6610 7694 UNI2-AS, ES 8151 6316 12143 UNINET, MX 11492 3533 4727 CABLEONE, US 39891 3489 4797 ALJAWWALSTC-AS, SA 6327 3416 3619 SHAW, CA 7155 2823 3864 VIASAT-SP-BACKBONE, US 22773 2494 3344 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2332 13433 AMAZON-02, US 30036 2228 2568 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2185 3499 Telmex Colombia S.A., CO Complete listing at https://bgp.nsrc.org/REN/RENU/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:2365 2:1517 3:767 4:11 5:4979 6:163 7:6 8:1604 9:1 11:172 12:1365 13:419 14:2519 15:353 16:282 17:373 18:915 20:526 21:4 22:188 23:7568 24:2888 25:2 27:2771 29:19 31:3289 32:44 33:1 34:84 35:204 36:2896 37:4646 38:10340 39:913 40:169 41:4444 42:1993 43:2587 44:380 45:19326 46:5072 47:301 49:1944 50:1901 51:591 52:1558 54:314 55:1091 56:11 57:267 58:2217 59:1280 60:1167 61:2998 62:3020 63:1823 64:5520 65:2190 66:4743 67:3111 68:1131 69:4002 70:1069 71:634 72:2916 74:2805 75:1628 76:616 77:2808 78:1884 79:1759 80:2220 81:2094 82:3127 83:1441 84:1867 85:3424 86:1069 87:2415 88:1307 89:4386 90:775 91:8422 92:2698 93:2906 94:4060 95:4321 96:1473 97:315 98:980 99:686 100:72 101:1166 102:4330 103:32304 104:5038 105:1237 106:1032 107:2647 108:1230 109:4122 110:2233 111:3324 112:2073 113:1808 114:1976 115:2188 116:2080 117:2555 118:2802 119:1951 120:1925 121:1366 122:2780 123:2403 124:1589 125:2851 126:91 128:1612 129:1020 130:1316 131:2035 132:778 133:451 134:1549 135:378 136:1354 137:1128 138:3078 139:1595 140:1592 141:1502 142:1924 143:1776 144:1096 145:512 146:2171 147:2109 148:2709 149:2924 150:1217 151:1910 152:2104 153:563 154:8321 155:1989 156:3301 157:1896 158:1316 159:2447 160:3890 161:1893 162:3760 163:2165 164:1728 165:2227 166:1476 167:1931 168:4468 169:801 170:5156 171:1006 172:4466 173:3313 174:916 175:1300 176:3755 177:5483 178:3693 179:2477 180:2652 181:4190 182:3436 183:2100 184:2112 185:21738 186:5497 187:4820 188:4259 189:4498 190:9747 191:1933 192:11257 193:9524 194:7843 195:5637 196:3656 197:3775 198:6122 199:8503 200:8526 201:6479 202:10353 203:10676 204:4539 205:3625 206:4498 207:3473 208:4290 209:5216 210:4619 211:2538 212:4576 213:3782 214:1025 215:48 216:6770 217:3207 218:1358 219:392 220:2085 221:1085 222:714 223:2381 End of report