IPv4 R&E Routing Table Report 23:05 GMT Wed 10 Sep, 2025 IPv4 BGP Table (Global) as seen at Singapore. Report Website: https://bgp.nsrc.org/REN Detailed Analysis: https://bgp.nsrc.org/REN/Singapore/ Analysis Summary ---------------- BGP routing table entries examined: 998724 Prefixes after maximum aggregation (per Origin AS): 387931 Deaggregation factor: 2.57 Unique aggregates announced (without unneeded subnets): 493821 Number of IPv4 prefixes with a valid ROA: 568914 Number of IPv4 prefixes with an invalid ROA: 1061 Number of IPv4 prefixes with no ROA: 428749 Total ASes present in the Internet Routing Table: 77188 Prefixes per ASN: 12.94 Origin-only ASes present in the Internet Routing Table: 66111 Origin ASes announcing only one prefix: 26995 Transit ASes present in the Internet Routing Table: 11077 Transit-only ASes present in the Internet Routing Table: 546 Paths with bogon ASNs present in the IPv4 Routing Table: 27 Average AS path length visible in the Internet Routing Table: 4.8 Max AS path length visible: 58 Max AS path prepend of ASN ( 37447) 54 Prefixes from unregistered ASNs in the Routing Table: 1142 Number of instances of unregistered ASNs: 1172 Number of 32-bit ASNs allocated by the RIRs: 47345 Number of 32-bit ASNs visible in the Routing Table: 38889 Prefixes from 32-bit ASNs in the Routing Table: 210134 Number of bogon 32-bit ASNs visible in the Routing Table: 74 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 459 Number of addresses announced to Internet: 3107383296 Equivalent to 185 /8s, 54 /16s and 232 /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: 325026 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 267237 Total APNIC prefixes after maximum aggregation: 79034 APNIC Deaggregation factor: 3.38 Prefixes being announced from the APNIC address blocks: 257302 Unique aggregates announced from the APNIC address blocks: 105562 APNIC Region origin ASes present in the Internet Routing Table: 14742 APNIC Prefixes per ASN: 17.45 APNIC Region origin ASes announcing only one prefix: 4467 APNIC Region transit ASes present in the Internet Routing Table: 1987 Average APNIC Region AS path length visible: 4.6 Max APNIC Region AS path length visible: 38 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10315 Number of APNIC addresses announced to Internet: 750260736 Equivalent to 44 /8s, 184 /16s and 18 /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: 292375 Total ARIN prefixes after maximum aggregation: 133447 ARIN Deaggregation factor: 2.19 Prefixes being announced from the ARIN address blocks: 293808 Unique aggregates announced from the ARIN address blocks: 142678 ARIN Region origin ASes present in the Internet Routing Table: 19264 ARIN Prefixes per ASN: 15.25 ARIN Region origin ASes announcing only one prefix: 7059 ARIN Region transit ASes present in the Internet Routing Table: 1939 Average ARIN Region AS path length visible: 4.4 Max ARIN Region AS path length visible: 41 Number of ARIN region 32-bit ASNs visible in the Routing Table: 5325 Number of ARIN addresses announced to Internet: 1349305600 Equivalent to 80 /8s, 108 /16s and 197 /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: 278259 Total RIPE prefixes after maximum aggregation: 137718 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 277431 Unique aggregates announced from the RIPE address blocks: 179716 RIPE Region origin ASes present in the Internet Routing Table: 29032 RIPE Prefixes per ASN: 9.56 RIPE Region origin ASes announcing only one prefix: 12103 RIPE Region transit ASes present in the Internet Routing Table: 4015 Average RIPE Region AS path length visible: 4.9 Max RIPE Region AS path length visible: 35 Number of RIPE region 32-bit ASNs visible in the Routing Table: 12681 Number of RIPE addresses announced to Internet: 732044544 Equivalent to 43 /8s, 162 /16s and 29 /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: 124671 Total LACNIC prefixes after maximum aggregation: 30210 LACNIC Deaggregation factor: 4.13 Prefixes being announced from the LACNIC address blocks: 120903 Unique aggregates announced from the LACNIC address blocks: 49454 LACNIC Region origin ASes present in the Internet Routing Table: 11285 LACNIC Prefixes per ASN: 10.71 LACNIC Region origin ASes announcing only one prefix: 2653 LACNIC Region transit ASes present in the Internet Routing Table: 2549 Average LACNIC Region AS path length visible: 5.4 Max LACNIC Region AS path length visible: 36 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9244 Number of LACNIC addresses announced to Internet: 170750720 Equivalent to 10 /8s, 45 /16s and 115 /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: 35040 Total AfriNIC prefixes after maximum aggregation: 6778 AfriNIC Deaggregation factor: 5.17 Prefixes being announced from the AfriNIC address blocks: 48821 Unique aggregates announced from the AfriNIC address blocks: 16011 AfriNIC Region origin ASes present in the Internet Routing Table: 1958 AfriNIC Prefixes per ASN: 24.93 AfriNIC Region origin ASes announcing only one prefix: 713 AfriNIC Region transit ASes present in the Internet Routing Table: 385 Average AfriNIC Region AS path length visible: 5.5 Max AfriNIC Region AS path length visible: 58 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1324 Number of AfriNIC addresses announced to Internet: 104757760 Equivalent to 6 /8s, 62 /16s and 122 /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 13209 8729 114 CHINAMOBILE-CN China Mobile Communication 7545 6137 838 614 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4466 535 310 BBIL-AP BHARTI Airtel Ltd., IN 18403 4449 347 26 FPT-AS-AP FPT Telecom Company, VN 7552 3937 1332 27 VIETEL-AS-AP Viettel Group, VN 7713 3674 1044 67 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3304 1869 100 VNPT-AS-VN VNPT Corp, VN 56046 2995 812 179 CMNET-JIANGSU-AP China Mobile communicati 24560 2919 862 508 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 4755 2177 427 182 TATACOMM-AS TATA Communications formerly Complete listing at https://bgp.nsrc.org/REN/Singapore/data-ASnet-APNIC ARIN Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 16509 14367 40862 5374 AMAZON-02, US 11492 4732 314 822 CABLEONE, US 22773 3960 3046 317 ASN-CXA-ALL-CCI-22773-RDC, US 7155 3859 286 85 VIASAT-SP-BACKBONE, US 6327 3661 1320 82 SHAW, CA 174 3248 8763 884 COGENT-174, US 396982 3226 3859 443 GOOGLE-CLOUD-PLATFORM, US 749 3219 54766 2470 DNIC-AS-00749, US 4155 2993 233 1749 USDA-1, US 16625 2889 1225 2159 AKAMAI-AS, US Complete listing at https://bgp.nsrc.org/REN/Singapore/data-ASnet-ARIN RIPE Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 12479 7494 1711 149 UNI2-AS, ES 39891 4798 293 63 ALJAWWALSTC-AS, SA 9009 3903 366 2184 M247, RO 20940 3895 3395 125 AKAMAI-ASN1, NL 12389 3120 2315 867 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2418 172 1751 CDNEXT, GB 34984 2411 361 584 TELLCOM-AS, TR 203020 1895 226 876 HOSTROYALE, IN 8452 1611 1852 14 TE-AS TE-AS, EG 13188 1607 100 27 TRIOLAN, UA Complete listing at https://bgp.nsrc.org/REN/Singapore/data-ASnet-RIPE LACNIC Region per AS prefix count summary ----------------------------------------- ASN No of nets /20 equiv MaxAgg Description 8151 12365 3279 576 UNINET, MX 10620 3489 473 1043 Telmex Colombia S.A., CO 13999 2538 511 348 Mega Cable, S.A. de C.V., MX 11830 1989 369 64 Instituto Costarricense de Electricidad y 28573 1376 2433 261 Claro NXT Telecomunicacoes Ltda, BR 3816 1352 789 205 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 11664 1215 278 33 Techtel LMDS Comunicaciones Interactivas 6147 1175 371 22 Telefonica del Peru S.A.A., PE 22884 1056 67 370 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1014 2487 55 TIM SA, BR Complete listing at https://bgp.nsrc.org/REN/Singapore/data-ASnet-LACNIC AfriNIC Region per AS prefix count summary ------------------------------------------ ASN No of nets /20 equiv MaxAgg Description 24835 1823 652 28 RAYA-AS, EG 36992 1503 1498 379 ETISALAT-MISR, EG 29571 1341 102 38 ORANGE-COTE-IVOIRE, CI 36903 1250 554 97 MT-MPLS, MA 24863 1245 389 20 LINKdotNET-AS, EG 37069 1085 1096 13 MOBINIL, EG 36935 1065 522 45 Vodafone-, EG 20011 576 154 212 NTT-DATA-Inc, ZA 36914 575 82 3 KENET-AS, KE 15399 549 56 54 WANANCHI-, KE Complete listing at https://bgp.nsrc.org/REN/Singapore/data-ASnet-AFRINIC Global Per AS prefix count summary ---------------------------------- ASN No of nets /20 equiv MaxAgg Description 16509 14367 40862 5374 AMAZON-02, US 9808 13209 8729 114 CHINAMOBILE-CN China Mobile Communication 8151 12365 3279 576 UNINET, MX 12479 7494 1711 149 UNI2-AS, ES 7545 6137 838 614 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4798 293 63 ALJAWWALSTC-AS, SA 11492 4732 314 822 CABLEONE, US 9498 4466 535 310 BBIL-AP BHARTI Airtel Ltd., IN 18403 4449 347 26 FPT-AS-AP FPT Telecom Company, VN 22773 3960 3046 317 ASN-CXA-ALL-CCI-22773-RDC, US Complete listing at https://bgp.nsrc.org/REN/Singapore/data-ASnet Global Per AS Maximum Aggregation summary ----------------------------------------- ASN No of nets Net Savings Description 9808 13209 13095 CHINAMOBILE-CN China Mobile Communications Grou 8151 12365 11789 UNINET, MX 12479 7494 7345 UNI2-AS, ES 7545 6137 5523 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4798 4735 ALJAWWALSTC-AS, SA 18403 4449 4423 FPT-AS-AP FPT Telecom Company, VN 9498 4466 4156 BBIL-AP BHARTI Airtel Ltd., IN 11492 4732 3910 CABLEONE, US 7552 3937 3910 VIETEL-AS-AP Viettel Group, VN 7155 3859 3774 VIASAT-SP-BACKBONE, US Complete listing at https://bgp.nsrc.org/REN/Singapore/data-CIDRnet List of Unregistered Origin ASNs (Global) ----------------------------------------- Bad AS Designation Net Originated Transit AS Transit AS Name 215136 UNALLOCATED 5.83.134.0/24 211066 RYZEHOSTING-TRADING, AT 215136 UNALLOCATED 5.175.140.0/24 211066 RYZEHOSTING-TRADING, AT 46639 UNALLOCATED 8.17.66.0/24 701 UUNET, US 53775 UNALLOCATED 8.20.88.0/24 7029 WINDSTREAM, US 396146 UNALLOCATED 8.21.227.0/24 3356 LEVEL3, 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/Singapore/data-badAS 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: 21859 ZEN-ECN, US 23.135.216.0/24 Origin: 400565 OPEN-WIRELESS-01, ZZ 23.135.216.0/24 Transit: 3356 LEVEL3, 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 23.142.24.0/24 Origin: 62164 HEYMMAN-2, CA 23.142.24.0/24 Transit: 64236 UNREAL-SERVERS, US Complete listing at https://bgp.nsrc.org/REN/Singapore/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 /9:14 /10:41 /11:92 /12:298 /13:576 /14:1199 /15:2124 /16:13724 /17:8144 /18:13381 /19:24446 /20:44160 /21:51811 /22:112200 /23:103143 /24:623355 /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 6565 12365 UNINET, MX 12479 6450 7494 UNI2-AS, ES 11492 3548 4732 CABLEONE, US 39891 3489 4798 ALJAWWALSTC-AS, SA 6327 3457 3661 SHAW, CA 7155 2818 3859 VIASAT-SP-BACKBONE, US 22773 2504 3960 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2436 14367 AMAZON-02, US 30036 2306 2648 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2207 3489 Telmex Colombia S.A., CO Complete listing at https://bgp.nsrc.org/REN/Singapore/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:2423 2:1511 3:935 4:10 5:4814 6:154 7:6 8:1541 9:4 11:172 12:1249 13:563 14:2619 15:398 16:302 17:389 18:903 20:569 21:4 22:188 23:7809 24:2658 25:2 27:2802 29:19 31:3364 32:30 33:1 34:84 35:271 36:4319 37:4534 38:9387 39:1011 40:281 41:4314 42:1955 43:2734 44:376 45:19035 46:5110 47:343 49:2005 50:2052 51:592 52:1607 54:371 55:1058 56:11 57:282 58:2276 59:1293 60:1182 61:2915 62:3051 63:1769 64:5613 65:2141 66:4829 67:3097 68:1078 69:3887 70:1038 71:626 72:2878 74:2806 75:1503 76:600 77:2776 78:1896 79:1760 80:2231 81:2079 82:3300 83:1452 84:1965 85:3482 86:1100 87:2116 88:1318 89:4499 90:804 91:8406 92:2780 93:2974 94:4157 95:4428 96:1446 97:312 98:947 99:748 100:71 101:1474 102:4061 103:32852 104:5289 105:777 106:877 107:2651 108:1218 109:4195 110:2243 111:3656 112:2520 113:1845 114:1990 115:2199 116:2089 117:2786 118:3054 119:1957 120:2192 121:1326 122:2787 123:2236 124:1716 125:2912 126:91 128:1554 129:947 130:1298 131:2129 132:781 133:460 134:1607 135:365 136:1486 137:1224 138:2804 139:1597 140:1673 141:1539 142:1910 143:2027 144:1252 145:608 146:2176 147:2108 148:2723 149:2917 150:1282 151:2398 152:2112 153:563 154:7506 155:2017 156:3580 157:1992 158:1418 159:2558 160:3603 161:1939 162:3904 163:2293 164:1913 165:2575 166:1558 167:2068 168:3820 169:774 170:5364 171:1003 172:4234 173:3404 174:902 175:1349 176:3795 177:4761 178:4118 179:2293 180:2736 181:4192 182:3689 183:2512 184:2050 185:21626 186:5378 187:4653 188:4288 189:4351 190:9657 191:1565 192:11355 193:9449 194:7796 195:5560 196:3301 197:3254 198:6092 199:8659 200:8092 201:6412 202:10409 203:10651 204:4557 205:3620 206:4489 207:3520 208:4271 209:5160 210:4686 211:2665 212:4666 213:3839 214:1070 215:52 216:6846 217:3292 218:1461 219:396 220:2155 221:1213 222:748 223:2848 End of report