IPv4 R&E Routing Table Report 21:10 GMT Mon 22 Dec, 2025 IPv4 BGP Table (Global) as seen at AARNET (Brisbane). Report Website: https://bgp.nsrc.org/REN Detailed Analysis: https://bgp.nsrc.org/REN/AARNET/ Analysis Summary ---------------- BGP routing table entries examined: 1023412 Prefixes after maximum aggregation (per Origin AS): 394031 Deaggregation factor: 2.60 Unique aggregates announced (without unneeded subnets): 505952 Number of IPv4 prefixes with a valid ROA: 608227 Number of IPv4 prefixes with an invalid ROA: 123 Number of IPv4 prefixes with no ROA: 415062 Total ASes present in the Internet Routing Table: 77660 Prefixes per ASN: 13.18 Origin-only ASes present in the Internet Routing Table: 66448 Origin ASes announcing only one prefix: 27124 Transit ASes present in the Internet Routing Table: 11212 Transit-only ASes present in the Internet Routing Table: 572 Paths with bogon ASNs present in the IPv4 Routing Table: 17 Average AS path length visible in the Internet Routing Table: 4.3 Max AS path length visible: 68 Max AS path prepend of ASN (269326) 61 Prefixes from unregistered ASNs in the Routing Table: 944 Number of instances of unregistered ASNs: 985 Number of 32-bit ASNs allocated by the RIRs: 48273 Number of 32-bit ASNs visible in the Routing Table: 39513 Prefixes from 32-bit ASNs in the Routing Table: 219182 Number of bogon 32-bit ASNs visible in the Routing Table: 92 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 721 Number of addresses announced to Internet: 3105156608 Equivalent to 185 /8s, 20 /16s and 238 /24s Percentage of available address space announced: 83.9 Percentage of allocated address space announced: 83.9 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: 334005 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 277098 Total APNIC prefixes after maximum aggregation: 80950 APNIC Deaggregation factor: 3.42 Prefixes being announced from the APNIC address blocks: 263231 Unique aggregates announced from the APNIC address blocks: 106447 APNIC Region origin ASes present in the Internet Routing Table: 14945 APNIC Prefixes per ASN: 17.61 APNIC Region origin ASes announcing only one prefix: 4567 APNIC Region transit ASes present in the Internet Routing Table: 2004 Average APNIC Region AS path length visible: 4.1 Max APNIC Region AS path length visible: 36 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10508 Number of APNIC addresses announced to Internet: 753040384 Equivalent to 44 /8s, 226 /16s and 124 /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: 300399 Total ARIN prefixes after maximum aggregation: 134921 ARIN Deaggregation factor: 2.23 Prefixes being announced from the ARIN address blocks: 300738 Unique aggregates announced from the ARIN address blocks: 145606 ARIN Region origin ASes present in the Internet Routing Table: 19389 ARIN Prefixes per ASN: 15.51 ARIN Region origin ASes announcing only one prefix: 7065 ARIN Region transit ASes present in the Internet Routing Table: 1994 Average ARIN Region AS path length visible: 4.0 Max ARIN Region AS path length visible: 35 Number of ARIN region 32-bit ASNs visible in the Routing Table: 5430 Number of ARIN addresses announced to Internet: 1342932224 Equivalent to 80 /8s, 11 /16s and 133 /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: 282933 Total RIPE prefixes after maximum aggregation: 140011 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 283783 Unique aggregates announced from the RIPE address blocks: 184000 RIPE Region origin ASes present in the Internet Routing Table: 29119 RIPE Prefixes per ASN: 9.75 RIPE Region origin ASes announcing only one prefix: 12075 RIPE Region transit ASes present in the Internet Routing Table: 4056 Average RIPE Region AS path length visible: 4.4 Max RIPE Region AS path length visible: 29 Number of RIPE region 32-bit ASNs visible in the Routing Table: 12887 Number of RIPE addresses announced to Internet: 735230464 Equivalent to 43 /8s, 210 /16s and 186 /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: 125944 Total LACNIC prefixes after maximum aggregation: 30578 LACNIC Deaggregation factor: 4.12 Prefixes being announced from the LACNIC address blocks: 121770 Unique aggregates announced from the LACNIC address blocks: 49737 LACNIC Region origin ASes present in the Internet Routing Table: 11324 LACNIC Prefixes per ASN: 10.75 LACNIC Region origin ASes announcing only one prefix: 2685 LACNIC Region transit ASes present in the Internet Routing Table: 2571 Average LACNIC Region AS path length visible: 5.3 Max LACNIC Region AS path length visible: 68 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9331 Number of LACNIC addresses announced to Internet: 170427392 Equivalent to 10 /8s, 40 /16s and 132 /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: 36094 Total AfriNIC prefixes after maximum aggregation: 6931 AfriNIC Deaggregation factor: 5.21 Prefixes being announced from the AfriNIC address blocks: 53168 Unique aggregates announced from the AfriNIC address blocks: 19573 AfriNIC Region origin ASes present in the Internet Routing Table: 1993 AfriNIC Prefixes per ASN: 26.68 AfriNIC Region origin ASes announcing only one prefix: 732 AfriNIC Region transit ASes present in the Internet Routing Table: 388 Average AfriNIC Region AS path length visible: 5.1 Max AfriNIC Region AS path length visible: 64 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1357 Number of AfriNIC addresses announced to Internet: 103174400 Equivalent to 6 /8s, 38 /16s and 81 /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 13332 8729 120 CHINAMOBILE-CN China Mobile Communication 7545 6037 834 581 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4626 542 340 BBIL-AP BHARTI Airtel Ltd., IN 18403 4405 347 24 FPT-AS-AP FPT Telecom Company, VN 7552 4041 1332 29 VIETEL-AS-AP Viettel Group, VN 7713 3726 1044 65 TELKOMNET-AS-AP PT Telekomunikasi Indones 17561 3407 214 651 LCS-AS-AP LARUS Limited, HK 56046 3372 831 182 CMNET-JIANGSU-AP China Mobile communicati 45899 3323 1868 98 VNPT-AS-VN VNPT Corp, VN 24560 2955 865 496 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., Complete listing at https://bgp.nsrc.org/REN/AARNET/data-ASnet-APNIC ARIN Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 16509 14009 38460 5447 AMAZON-02, US 22773 4780 3116 368 ASN-CXA-ALL-CCI-22773-RDC, US 11492 4687 311 949 CABLEONE, US 7155 3861 286 85 VIASAT-SP-BACKBONE, US 6327 3689 1320 82 SHAW, CA 174 3327 8767 856 COGENT-174, US 396982 3317 4867 491 GOOGLE-CLOUD-PLATFORM, US 749 3143 54729 2394 DNIC-AS-00749, US 16625 2982 1280 2178 AKAMAI-AS, US 36352 2701 223 899 AS-COLOCROSSING, US Complete listing at https://bgp.nsrc.org/REN/AARNET/data-ASnet-ARIN RIPE Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 12479 7286 1711 149 UNI2-AS, ES 39891 4833 298 66 ALJAWWALSTC-AS, SA 20940 3953 3394 123 AKAMAI-ASN1, NL 9009 3950 368 2259 M247, RO 12389 3152 2317 871 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2564 182 1862 CDNEXT, GB 34984 2421 371 575 TELLCOM-AS, TR 8452 1697 1852 14 TE-AS TE-AS, EG 203020 1617 242 783 HOSTROYALE, IN 13188 1607 100 27 TRIOLAN, UA Complete listing at https://bgp.nsrc.org/REN/AARNET/data-ASnet-RIPE LACNIC Region per AS prefix count summary ----------------------------------------- ASN No of nets /20 equiv MaxAgg Description 8151 12622 3275 591 UNINET, MX 10620 3434 457 1108 Telmex Colombia S.A., CO 13999 2493 507 353 Mega Cable, S.A. de C.V., MX 11830 1992 369 65 Instituto Costarricense de Electricidad y 28573 1369 2429 273 Claro NXT Telecomunicacoes Ltda, BR 11664 1368 278 31 Techtel LMDS Comunicaciones Interactivas 3816 1339 770 213 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1260 371 22 Telefonica del Peru S.A.A., PE 22884 1056 67 359 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1025 2486 56 TIM SA, BR Complete listing at https://bgp.nsrc.org/REN/AARNET/data-ASnet-LACNIC AfriNIC Region per AS prefix count summary ------------------------------------------ ASN No of nets /20 equiv MaxAgg Description 24835 1927 368 14 RAYA-AS, EG 36992 1844 1536 335 ETISALAT-MISR, EG 24863 1262 389 16 LINKdotNET-AS, EG 36903 1250 554 97 MT-MPLS, MA 29571 1072 94 22 ORANGE-COTE-IVOIRE, CI 37069 1063 1084 13 MOBINIL, EG 36935 1047 519 30 Vodafone-, EG 20011 580 154 212 NTT-DATA-Inc, ZA 36914 558 82 3 KENET-AS, KE 15399 553 57 55 WANANCHI-, KE Complete listing at https://bgp.nsrc.org/REN/AARNET/data-ASnet-AFRINIC Global Per AS prefix count summary ---------------------------------- ASN No of nets /20 equiv MaxAgg Description 16509 14009 38460 5447 AMAZON-02, US 9808 13332 8729 120 CHINAMOBILE-CN China Mobile Communication 8151 12622 3275 591 UNINET, MX 12479 7286 1711 149 UNI2-AS, ES 7545 6037 834 581 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 298 66 ALJAWWALSTC-AS, SA 22773 4780 3116 368 ASN-CXA-ALL-CCI-22773-RDC, US 11492 4687 311 949 CABLEONE, US 9498 4626 542 340 BBIL-AP BHARTI Airtel Ltd., IN 18403 4405 347 24 FPT-AS-AP FPT Telecom Company, VN Complete listing at https://bgp.nsrc.org/REN/AARNET/data-ASnet Global Per AS Maximum Aggregation summary ----------------------------------------- ASN No of nets Net Savings Description 9808 13332 13212 CHINAMOBILE-CN China Mobile Communications Grou 8151 12622 12031 UNINET, MX 12479 7286 7137 UNI2-AS, ES 7545 6037 5456 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 4767 ALJAWWALSTC-AS, SA 22773 4780 4412 ASN-CXA-ALL-CCI-22773-RDC, US 18403 4405 4381 FPT-AS-AP FPT Telecom Company, VN 9498 4626 4286 BBIL-AP BHARTI Airtel Ltd., IN 7552 4041 4012 VIETEL-AS-AP Viettel Group, VN 20940 3953 3830 AKAMAI-ASN1, NL Complete listing at https://bgp.nsrc.org/REN/AARNET/data-CIDRnet List of Unregistered Origin ASNs (Global) ----------------------------------------- Bad AS Designation Net Originated Transit AS Transit AS Name 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 395195 UNALLOCATED 8.38.115.0/24 3356 LEVEL3, US 1782 UNALLOCATED 8.42.19.0/24 3356 LEVEL3, US 54739 UNALLOCATED 8.44.198.0/23 13335 CLOUDFLARENET, US 13342 UNALLOCATED 12.17.5.0/24 7018 ATT-INTERNET4, US 26345 UNALLOCATED 12.21.93.0/24 40264 TWC-40264-WI-MN-UPPERMI 396831 UNALLOCATED 12.23.198.0/24 7018 ATT-INTERNET4, US 21861 UNALLOCATED 12.37.59.0/24 7018 ATT-INTERNET4, US Complete listing at https://bgp.nsrc.org/REN/AARNET/data-badAS Advertised Unallocated Addresses -------------------------------- Unassigned Network ASN Information AS Name 23.137.48.0/24 Origin: 16904 ARVIG-16904, US 23.137.48.0/24 Transit: 3257 GTT-BACKBONE GTT, US 23.137.200.0/24 Origin: 16276 OVH, FR 23.137.200.0/24 Transit: 7575 AARNET-AS-AP Australian Academic and Res 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 23.142.24.0/24 Origin: 62164 HEYMMAN-2, CA 23.142.24.0/24 Transit: 64236 UNREAL-SERVERS, US Complete listing at https://bgp.nsrc.org/REN/AARNET/data-add-IANA Number of prefixes announced per prefix length (Global) ------------------------------------------------------- !!Default route being announced!! /1:0 /2:0 /3:0 /4:0 /5:0 /6:0 /7:0 /8:16 /9:14 /10:41 /11:93 /12:299 /13:582 /14:1204 /15:2098 /16:13685 /17:8225 /18:13506 /19:24809 /20:44780 /21:52135 /22:113200 /23:105974 /24:642750 /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 8151 6831 12622 UNINET, MX 12479 6217 7286 UNI2-AS, ES 11492 3532 4687 CABLEONE, US 39891 3521 4833 ALJAWWALSTC-AS, SA 6327 3478 3689 SHAW, CA 22773 3050 4780 ASN-CXA-ALL-CCI-22773-RDC, US 7155 2820 3861 VIASAT-SP-BACKBONE, US 16509 2453 14009 AMAZON-02, US 30036 2321 2664 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2214 3434 Telmex Colombia S.A., CO Complete listing at https://bgp.nsrc.org/REN/AARNET/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:2444 2:1553 3:974 4:10 5:4980 6:187 7:6 8:1502 9:10 11:172 12:1228 13:601 14:2624 15:418 16:290 17:383 18:913 20:587 21:4 22:188 23:8128 24:2609 25:2 27:2825 29:19 31:3391 32:31 33:1 34:81 35:287 36:4609 37:4527 38:10330 39:1206 40:439 41:4518 42:1959 43:2886 44:412 45:19527 46:5112 47:394 49:2155 50:2062 51:597 52:1288 54:225 55:1128 56:11 57:309 58:2297 59:1327 60:1170 61:3056 62:3106 63:1739 64:6003 65:2123 66:5926 67:3247 68:1499 69:4204 70:1022 71:626 72:3072 74:2937 75:1520 76:597 77:2760 78:1927 79:1794 80:2299 81:2087 82:3898 83:1477 84:2032 85:3645 86:1099 87:2205 88:1359 89:4620 90:835 91:8424 92:2838 93:3022 94:4265 95:4554 96:1450 97:312 98:954 99:782 100:68 101:1313 102:4316 103:32300 104:5460 105:777 106:919 107:2801 108:1211 109:4250 110:2303 111:3970 112:2812 113:1912 114:2091 115:2310 116:2161 117:3157 118:3001 119:2067 120:2412 121:1513 122:2946 123:2297 124:1605 125:2925 126:125 128:1610 129:962 130:1550 131:2278 132:768 133:462 134:1635 135:539 136:1501 137:1416 138:3011 139:1612 140:1769 141:1560 142:2427 143:2117 144:1375 145:626 146:2191 147:2138 148:2784 149:2950 150:1314 151:2573 152:2262 153:866 154:9667 155:2276 156:4790 157:2252 158:1477 159:2731 160:3744 161:2000 162:3987 163:2332 164:1964 165:2648 166:1302 167:2196 168:3913 169:813 170:5449 171:1119 172:4551 173:3428 174:901 175:1338 176:3755 177:4762 178:4316 179:2313 180:2824 181:4342 182:3859 183:2653 184:2054 185:21738 186:5528 187:4798 188:4459 189:4492 190:9658 191:1536 192:11440 193:9510 194:7859 195:5632 196:3312 197:3172 198:6224 199:6109 200:8208 201:6386 202:10488 203:10612 204:4664 205:3759 206:4425 207:3953 208:4354 209:5506 210:4777 211:2682 212:4906 213:4026 214:1065 215:54 216:7134 217:3464 218:1606 219:409 220:2189 221:1293 222:776 223:3222 End of report