IPv4 R&E Routing Table Report 23:05 GMT Mon 08 Dec, 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: 1016179 Prefixes after maximum aggregation (per Origin AS): 393058 Deaggregation factor: 2.59 Unique aggregates announced (without unneeded subnets): 504167 Number of IPv4 prefixes with a valid ROA: 598719 Number of IPv4 prefixes with an invalid ROA: 649 Number of IPv4 prefixes with no ROA: 416811 Total ASes present in the Internet Routing Table: 77534 Prefixes per ASN: 13.11 Origin-only ASes present in the Internet Routing Table: 66478 Origin ASes announcing only one prefix: 27126 Transit ASes present in the Internet Routing Table: 11056 Transit-only ASes present in the Internet Routing Table: 552 Paths with bogon ASNs present in the IPv4 Routing Table: 18 Average AS path length visible in the Internet Routing Table: 4.7 Max AS path length visible: 185 Max AS path prepend of ASN (139009) 181 Prefixes from unregistered ASNs in the Routing Table: 967 Number of instances of unregistered ASNs: 996 Number of 32-bit ASNs allocated by the RIRs: 48170 Number of 32-bit ASNs visible in the Routing Table: 39410 Prefixes from 32-bit ASNs in the Routing Table: 217676 Number of bogon 32-bit ASNs visible in the Routing Table: 72 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 437 Number of addresses announced to Internet: 3099729152 Equivalent to 184 /8s, 194 /16s and 29 /24s Percentage of available address space announced: 83.7 Percentage of allocated address space announced: 83.7 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: 332444 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 274815 Total APNIC prefixes after maximum aggregation: 80648 APNIC Deaggregation factor: 3.41 Prefixes being announced from the APNIC address blocks: 262386 Unique aggregates announced from the APNIC address blocks: 106101 APNIC Region origin ASes present in the Internet Routing Table: 14877 APNIC Prefixes per ASN: 17.64 APNIC Region origin ASes announcing only one prefix: 4523 APNIC Region transit ASes present in the Internet Routing Table: 2001 Average APNIC Region AS path length visible: 4.7 Max APNIC Region AS path length visible: 185 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10460 Number of APNIC addresses announced to Internet: 752803840 Equivalent to 44 /8s, 222 /16s and 224 /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: 297335 Total ARIN prefixes after maximum aggregation: 134292 ARIN Deaggregation factor: 2.21 Prefixes being announced from the ARIN address blocks: 296967 Unique aggregates announced from the ARIN address blocks: 145714 ARIN Region origin ASes present in the Internet Routing Table: 19355 ARIN Prefixes per ASN: 15.34 ARIN Region origin ASes announcing only one prefix: 7104 ARIN Region transit ASes present in the Internet Routing Table: 1922 Average ARIN Region AS path length visible: 4.3 Max ARIN Region AS path length visible: 28 Number of ARIN region 32-bit ASNs visible in the Routing Table: 5418 Number of ARIN addresses announced to Internet: 1337253376 Equivalent to 79 /8s, 180 /16s and 222 /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: 281852 Total RIPE prefixes after maximum aggregation: 139794 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 282968 Unique aggregates announced from the RIPE address blocks: 183808 RIPE Region origin ASes present in the Internet Routing Table: 29120 RIPE Prefixes per ASN: 9.72 RIPE Region origin ASes announcing only one prefix: 12084 RIPE Region transit ASes present in the Internet Routing Table: 4040 Average RIPE Region AS path length visible: 4.9 Max RIPE Region AS path length visible: 30 Number of RIPE region 32-bit ASNs visible in the Routing Table: 12855 Number of RIPE addresses announced to Internet: 735708416 Equivalent to 43 /8s, 218 /16s and 5 /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: 125550 Total LACNIC prefixes after maximum aggregation: 30797 LACNIC Deaggregation factor: 4.08 Prefixes being announced from the LACNIC address blocks: 121506 Unique aggregates announced from the LACNIC address blocks: 49704 LACNIC Region origin ASes present in the Internet Routing Table: 11323 LACNIC Prefixes per ASN: 10.73 LACNIC Region origin ASes announcing only one prefix: 2682 LACNIC Region transit ASes present in the Internet Routing Table: 2533 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: 9320 Number of LACNIC addresses announced to Internet: 170610176 Equivalent to 10 /8s, 43 /16s and 78 /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: 35660 Total AfriNIC prefixes after maximum aggregation: 6873 AfriNIC Deaggregation factor: 5.19 Prefixes being announced from the AfriNIC address blocks: 51915 Unique aggregates announced from the AfriNIC address blocks: 18464 AfriNIC Region origin ASes present in the Internet Routing Table: 1995 AfriNIC Prefixes per ASN: 26.02 AfriNIC Region origin ASes announcing only one prefix: 733 AfriNIC Region transit ASes present in the Internet Routing Table: 379 Average AfriNIC Region AS path length visible: 5.3 Max AfriNIC Region AS path length visible: 72 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1357 Number of AfriNIC addresses announced to Internet: 103189760 Equivalent to 6 /8s, 38 /16s and 141 /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 13284 8729 118 CHINAMOBILE-CN China Mobile Communication 7545 6040 834 587 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4600 541 336 BBIL-AP BHARTI Airtel Ltd., IN 18403 4416 347 24 FPT-AS-AP FPT Telecom Company, VN 7552 4014 1332 28 VIETEL-AS-AP Viettel Group, VN 7713 3715 1044 65 TELKOMNET-AS-AP PT Telekomunikasi Indones 56046 3340 828 182 CMNET-JIANGSU-AP China Mobile communicati 45899 3318 1869 99 VNPT-AS-VN VNPT Corp, VN 24560 2955 865 501 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 140292 2511 274 1936 CHINATELECOM-JIANGSU-SUZHOU-5G-NETWORK CH 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 14255 37209 5407 AMAZON-02, US 22773 4777 3100 367 ASN-CXA-ALL-CCI-22773-RDC, US 11492 4715 313 913 CABLEONE, US 7155 3861 286 85 VIASAT-SP-BACKBONE, US 6327 3691 1320 83 SHAW, CA 396982 3315 4862 489 GOOGLE-CLOUD-PLATFORM, US 749 3208 54760 2459 DNIC-AS-00749, US 16625 2874 1231 2152 AKAMAI-AS, US 36352 2829 230 910 AS-COLOCROSSING, US 174 2703 8768 851 COGENT-174, 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 7288 1711 149 UNI2-AS, ES 39891 4833 298 66 ALJAWWALSTC-AS, SA 9009 3993 375 2288 M247, RO 20940 3856 3394 124 AKAMAI-ASN1, NL 12389 3150 2317 869 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2542 181 1842 CDNEXT, GB 34984 2422 363 574 TELLCOM-AS, TR 8452 1686 1852 14 TE-AS TE-AS, EG 203020 1614 241 784 HOSTROYALE, IN 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 12654 3291 583 UNINET, MX 10620 3457 463 1100 Telmex Colombia S.A., CO 13999 2507 509 351 Mega Cable, S.A. de C.V., MX 11830 1992 369 65 Instituto Costarricense de Electricidad y 28573 1373 2431 267 Claro NXT Telecomunicacoes Ltda, BR 3816 1347 779 211 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1262 371 22 Telefonica del Peru S.A.A., PE 22884 1056 67 358 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1016 2486 56 TIM SA, BR 18881 901 1127 31 TELEFONICA BRASIL S.A, 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 1925 368 14 RAYA-AS, EG 36992 1683 1509 399 ETISALAT-MISR, EG 24863 1262 389 20 LINKdotNET-AS, EG 36903 1249 554 96 MT-MPLS, MA 37069 1093 1096 13 MOBINIL, EG 29571 1072 94 22 ORANGE-COTE-IVOIRE, CI 36935 1041 520 31 Vodafone-, EG 20011 580 154 212 NTT-DATA-Inc, ZA 36914 569 82 3 KENET-AS, KE 15399 551 57 56 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 14255 37209 5407 AMAZON-02, US 9808 13284 8729 118 CHINAMOBILE-CN China Mobile Communication 8151 12654 3291 583 UNINET, MX 12479 7288 1711 149 UNI2-AS, ES 7545 6040 834 587 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 298 66 ALJAWWALSTC-AS, SA 22773 4777 3100 367 ASN-CXA-ALL-CCI-22773-RDC, US 11492 4715 313 913 CABLEONE, US 9498 4600 541 336 BBIL-AP BHARTI Airtel Ltd., IN 18403 4416 347 24 FPT-AS-AP FPT Telecom Company, VN 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 13284 13166 CHINAMOBILE-CN China Mobile Communications Grou 8151 12654 12071 UNINET, MX 12479 7288 7139 UNI2-AS, ES 7545 6040 5453 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 4767 ALJAWWALSTC-AS, SA 22773 4777 4410 ASN-CXA-ALL-CCI-22773-RDC, US 18403 4416 4392 FPT-AS-AP FPT Telecom Company, VN 9498 4600 4264 BBIL-AP BHARTI Airtel Ltd., IN 7552 4014 3986 VIETEL-AS-AP Viettel Group, VN 11492 4715 3802 CABLEONE, 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 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 6461 ZAYO-6461, 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 12.17.5.0/24 174 COGENT-174, 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 Complete listing at https://bgp.nsrc.org/REN/Singapore/data-badAS Advertised Unallocated Addresses -------------------------------- Unassigned Network ASN Information AS Name 23.135.216.0/24 Origin: 400565 RESERVED, ZZ 23.135.216.0/24 Transit: 3356 LEVEL3, US 23.137.48.0/24 Origin: 16904 ARVIG-16904, US 23.137.48.0/24 Transit: 174 COGENT-174, US 23.137.200.0/24 Origin: 16276 OVH, FR 23.137.200.0/24 Transit: 174 COGENT-174, 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 /11:94 /12:298 /13:578 /14:1197 /15:2088 /16:13645 /17:8156 /18:13411 /19:24657 /20:44493 /21:51921 /22:112697 /23:104966 /24:637907 /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 6853 12654 UNINET, MX 12479 6218 7288 UNI2-AS, ES 11492 3559 4715 CABLEONE, US 39891 3521 4833 ALJAWWALSTC-AS, SA 6327 3478 3691 SHAW, CA 22773 3047 4777 ASN-CXA-ALL-CCI-22773-RDC, US 7155 2820 3861 VIASAT-SP-BACKBONE, US 16509 2437 14255 AMAZON-02, US 30036 2318 2661 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2212 3457 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) ---------------------------------------------- 1:2444 2:1532 3:970 4:10 5:4931 6:190 7:6 8:1500 9:6 11:172 12:1230 13:571 14:2602 15:414 16:303 17:388 18:912 20:587 21:4 22:188 23:8052 24:2561 25:2 27:2792 29:19 31:3390 32:31 33:1 34:84 35:285 36:4606 37:4549 38:9397 39:1193 40:447 41:4442 42:1945 43:2878 44:402 45:19463 46:5088 47:386 49:2150 50:2050 51:596 52:1566 54:287 55:1100 56:11 57:300 58:2314 59:1329 60:1167 61:3091 62:3093 63:1740 64:5957 65:2123 66:5865 67:3229 68:1492 69:4172 70:1027 71:614 72:3042 74:2922 75:1517 76:595 77:2771 78:1920 79:1786 80:2298 81:2070 82:3837 83:1458 84:2027 85:3640 86:1105 87:2156 88:1346 89:4581 90:840 91:8429 92:2849 93:3013 94:4227 95:4554 96:1444 97:311 98:951 99:775 100:68 101:1352 102:4333 103:32651 104:5490 105:780 106:916 107:2800 108:1201 109:4205 110:2314 111:3913 112:2792 113:1932 114:2099 115:2262 116:2173 117:3137 118:3008 119:2088 120:2378 121:1498 122:2944 123:2276 124:1649 125:2933 126:125 128:1580 129:957 130:1506 131:2255 132:764 133:462 134:1634 135:510 136:1497 137:1142 138:2976 139:1592 140:1722 141:1558 142:2347 143:2125 144:1351 145:629 146:2181 147:2134 148:2791 149:2886 150:1314 151:2622 152:2275 153:768 154:9167 155:2264 156:4207 157:2251 158:1469 159:2691 160:3651 161:1992 162:4002 163:2320 164:1963 165:2619 166:1296 167:2144 168:3912 169:798 170:5423 171:1115 172:4509 173:3415 174:908 175:1351 176:3763 177:4745 178:4295 179:2284 180:2977 181:4335 182:3837 183:2622 184:2050 185:21657 186:5515 187:4767 188:4452 189:4510 190:9694 191:1548 192:11413 193:9493 194:7855 195:5618 196:3285 197:3305 198:6040 199:6093 200:8069 201:6390 202:10437 203:10498 204:4610 205:3663 206:4356 207:3767 208:4257 209:5376 210:4714 211:2679 212:4891 213:4007 214:1029 215:53 216:7050 217:3384 218:1594 219:406 220:2193 221:1285 222:776 223:3198 End of report