IPv4 R&E Routing Table Report 23:05 GMT Fri 12 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: 1017828 Prefixes after maximum aggregation (per Origin AS): 393399 Deaggregation factor: 2.59 Unique aggregates announced (without unneeded subnets): 504620 Number of IPv4 prefixes with a valid ROA: 601951 Number of IPv4 prefixes with an invalid ROA: 623 Number of IPv4 prefixes with no ROA: 415254 Total ASes present in the Internet Routing Table: 77544 Prefixes per ASN: 13.13 Origin-only ASes present in the Internet Routing Table: 66450 Origin ASes announcing only one prefix: 27134 Transit ASes present in the Internet Routing Table: 11094 Transit-only ASes present in the Internet Routing Table: 554 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: 72 Max AS path prepend of ASN ( 37447) 66 Prefixes from unregistered ASNs in the Routing Table: 1006 Number of instances of unregistered ASNs: 1035 Number of 32-bit ASNs allocated by the RIRs: 48180 Number of 32-bit ASNs visible in the Routing Table: 39434 Prefixes from 32-bit ASNs in the Routing Table: 218843 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: 746 Number of addresses announced to Internet: 3104601856 Equivalent to 185 /8s, 12 /16s and 119 /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: 332398 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 275327 Total APNIC prefixes after maximum aggregation: 80542 APNIC Deaggregation factor: 3.42 Prefixes being announced from the APNIC address blocks: 262418 Unique aggregates announced from the APNIC address blocks: 106172 APNIC Region origin ASes present in the Internet Routing Table: 14878 APNIC Prefixes per ASN: 17.64 APNIC Region origin ASes announcing only one prefix: 4527 APNIC Region transit ASes present in the Internet Routing Table: 2005 Average APNIC Region AS path length visible: 4.7 Max APNIC Region AS path length visible: 38 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10465 Number of APNIC addresses announced to Internet: 753017344 Equivalent to 44 /8s, 226 /16s and 34 /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: 298024 Total ARIN prefixes after maximum aggregation: 134576 ARIN Deaggregation factor: 2.21 Prefixes being announced from the ARIN address blocks: 298290 Unique aggregates announced from the ARIN address blocks: 145759 ARIN Region origin ASes present in the Internet Routing Table: 19348 ARIN Prefixes per ASN: 15.42 ARIN Region origin ASes announcing only one prefix: 7096 ARIN Region transit ASes present in the Internet Routing Table: 1923 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: 5423 Number of ARIN addresses announced to Internet: 1342345984 Equivalent to 80 /8s, 2 /16s and 147 /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: 282054 Total RIPE prefixes after maximum aggregation: 139841 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 282799 Unique aggregates announced from the RIPE address blocks: 183581 RIPE Region origin ASes present in the Internet Routing Table: 29118 RIPE Prefixes per ASN: 9.71 RIPE Region origin ASes announcing only one prefix: 12089 RIPE Region transit ASes present in the Internet Routing Table: 4046 Average RIPE Region AS path length visible: 4.9 Max RIPE Region AS path length visible: 31 Number of RIPE region 32-bit ASNs visible in the Routing Table: 12860 Number of RIPE addresses announced to Internet: 735058432 Equivalent to 43 /8s, 208 /16s and 26 /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: 125555 Total LACNIC prefixes after maximum aggregation: 30814 LACNIC Deaggregation factor: 4.07 Prefixes being announced from the LACNIC address blocks: 121460 Unique aggregates announced from the LACNIC address blocks: 49718 LACNIC Region origin ASes present in the Internet Routing Table: 11320 LACNIC Prefixes per ASN: 10.73 LACNIC Region origin ASes announcing only one prefix: 2685 LACNIC Region transit ASes present in the Internet Routing Table: 2553 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: 9324 Number of LACNIC addresses announced to Internet: 170568192 Equivalent to 10 /8s, 42 /16s and 170 /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: 35862 Total AfriNIC prefixes after maximum aggregation: 6947 AfriNIC Deaggregation factor: 5.16 Prefixes being announced from the AfriNIC address blocks: 52115 Unique aggregates announced from the AfriNIC address blocks: 18779 AfriNIC Region origin ASes present in the Internet Routing Table: 1999 AfriNIC Prefixes per ASN: 26.07 AfriNIC Region origin ASes announcing only one prefix: 737 AfriNIC Region transit ASes present in the Internet Routing Table: 378 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: 1362 Number of AfriNIC addresses announced to Internet: 103246848 Equivalent to 6 /8s, 39 /16s and 108 /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 13280 8729 118 CHINAMOBILE-CN China Mobile Communication 7545 6036 834 582 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4608 541 339 BBIL-AP BHARTI Airtel Ltd., IN 18403 4411 347 24 FPT-AS-AP FPT Telecom Company, VN 7552 4015 1332 28 VIETEL-AS-AP Viettel Group, VN 7713 3729 1044 65 TELKOMNET-AS-AP PT Telekomunikasi Indones 56046 3338 828 182 CMNET-JIANGSU-AP China Mobile communicati 45899 3322 1869 99 VNPT-AS-VN VNPT Corp, VN 24560 2954 865 499 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 17561 2517 158 567 LCS-AS-AP LARUS Limited, HK 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 14155 38434 5407 AMAZON-02, US 22773 4779 3100 368 ASN-CXA-ALL-CCI-22773-RDC, US 11492 4684 311 949 CABLEONE, US 7155 3861 286 85 VIASAT-SP-BACKBONE, US 6327 3691 1320 83 SHAW, CA 396982 3318 4863 492 GOOGLE-CLOUD-PLATFORM, US 749 3207 54744 2458 DNIC-AS-00749, US 16625 2857 1223 2141 AKAMAI-AS, US 36352 2818 229 904 AS-COLOCROSSING, US 174 2708 8772 871 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 7286 1711 149 UNI2-AS, ES 39891 4833 298 66 ALJAWWALSTC-AS, SA 9009 3942 368 2258 M247, RO 20940 3847 3394 121 AKAMAI-ASN1, NL 12389 3150 2317 869 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2546 181 1848 CDNEXT, GB 34984 2420 363 574 TELLCOM-AS, TR 8452 1686 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/Singapore/data-ASnet-RIPE LACNIC Region per AS prefix count summary ----------------------------------------- ASN No of nets /20 equiv MaxAgg Description 8151 12683 3293 585 UNINET, MX 10620 3433 457 1107 Telmex Colombia S.A., CO 13999 2514 509 352 Mega Cable, S.A. de C.V., MX 11830 1992 369 65 Instituto Costarricense de Electricidad y 28573 1374 2432 267 Claro NXT Telecomunicacoes Ltda, BR 3816 1337 768 219 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1264 371 22 Telefonica del Peru S.A.A., PE 22884 1056 67 358 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1022 2486 56 TIM SA, BR 18881 906 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 1926 368 14 RAYA-AS, EG 36992 1684 1509 399 ETISALAT-MISR, EG 24863 1262 389 20 LINKdotNET-AS, EG 36903 1250 554 97 MT-MPLS, MA 29571 1072 94 22 ORANGE-COTE-IVOIRE, CI 36935 1036 520 31 Vodafone-, EG 37069 1029 1112 11 MOBINIL, EG 20011 580 154 212 NTT-DATA-Inc, ZA 36914 541 82 3 KENET-AS, KE 37342 536 32 1 MOVITEL, MZ 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 14155 38434 5407 AMAZON-02, US 9808 13280 8729 118 CHINAMOBILE-CN China Mobile Communication 8151 12683 3293 585 UNINET, MX 12479 7286 1711 149 UNI2-AS, ES 7545 6036 834 582 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 298 66 ALJAWWALSTC-AS, SA 22773 4779 3100 368 ASN-CXA-ALL-CCI-22773-RDC, US 11492 4684 311 949 CABLEONE, US 9498 4608 541 339 BBIL-AP BHARTI Airtel Ltd., IN 18403 4411 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 13280 13162 CHINAMOBILE-CN China Mobile Communications Grou 8151 12683 12098 UNINET, MX 12479 7286 7137 UNI2-AS, ES 7545 6036 5454 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 4767 ALJAWWALSTC-AS, SA 22773 4779 4411 ASN-CXA-ALL-CCI-22773-RDC, US 18403 4411 4387 FPT-AS-AP FPT Telecom Company, VN 9498 4608 4269 BBIL-AP BHARTI Airtel Ltd., IN 7552 4015 3987 VIETEL-AS-AP Viettel Group, VN 7155 3861 3776 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 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 23.137.48.0/24 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 23.140.180.0/24 Origin: 401371 DEEP-TO-ONE-INC, US 23.140.180.0/24 Transit: 154309 INTELLIGENT1-AS-AP Intelligent Cloud Lim 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 /11:93 /12:299 /13:579 /14:1198 /15:2091 /16:13644 /17:8154 /18:13422 /19:24672 /20:44556 /21:51924 /22:112656 /23:105075 /24:639394 /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 6875 12683 UNINET, MX 12479 6217 7286 UNI2-AS, ES 11492 3529 4684 CABLEONE, US 39891 3521 4833 ALJAWWALSTC-AS, SA 6327 3478 3691 SHAW, CA 22773 3048 4779 ASN-CXA-ALL-CCI-22773-RDC, US 7155 2820 3861 VIASAT-SP-BACKBONE, US 16509 2418 14155 AMAZON-02, US 30036 2319 2662 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2213 3433 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) ---------------------------------------------- 1:2446 2:1535 3:967 4:10 5:4956 6:187 7:6 8:1501 9:6 11:172 12:1231 13:542 14:2611 15:415 16:298 17:387 18:912 20:587 21:4 22:188 23:8052 24:2558 25:2 27:2795 29:19 31:3388 32:31 33:1 34:84 35:287 36:4602 37:4547 38:9964 39:1194 40:432 41:4447 42:1971 43:2892 44:414 45:19604 46:5081 47:394 49:2157 50:2053 51:596 52:1541 54:289 55:1117 56:11 57:301 58:2319 59:1343 60:1171 61:3087 62:3098 63:1737 64:5978 65:2116 66:5881 67:3235 68:1494 69:4191 70:1028 71:618 72:3056 74:2933 75:1517 76:597 77:2776 78:1928 79:1790 80:2302 81:2079 82:3844 83:1467 84:2022 85:3641 86:1109 87:2165 88:1342 89:4580 90:834 91:8415 92:2836 93:3012 94:4238 95:4555 96:1439 97:311 98:950 99:780 100:68 101:1352 102:4310 103:32609 104:5488 105:775 106:915 107:2814 108:1200 109:4235 110:2311 111:3923 112:2787 113:1929 114:2100 115:2263 116:2174 117:3130 118:2976 119:2084 120:2378 121:1495 122:2945 123:2276 124:1652 125:2931 126:125 128:1579 129:950 130:1521 131:2228 132:764 133:462 134:1628 135:537 136:1500 137:1216 138:2990 139:1591 140:1773 141:1553 142:2422 143:2110 144:1362 145:634 146:2182 147:2136 148:2788 149:2947 150:1321 151:2609 152:2271 153:795 154:9285 155:2276 156:4312 157:2235 158:1475 159:2700 160:3659 161:2000 162:3983 163:2324 164:1978 165:2627 166:1304 167:2154 168:3921 169:804 170:5437 171:1115 172:4518 173:3424 174:903 175:1345 176:3766 177:4705 178:4292 179:2283 180:2970 181:4339 182:3842 183:2620 184:2041 185:21626 186:5522 187:4773 188:4451 189:4487 190:9691 191:1535 192:11418 193:9502 194:7851 195:5608 196:3292 197:3262 198:6055 199:6094 200:8071 201:6395 202:10447 203:10485 204:4621 205:3688 206:4370 207:3789 208:4275 209:5396 210:4721 211:2679 212:4894 213:4019 214:1061 215:53 216:7080 217:3379 218:1594 219:405 220:2194 221:1285 222:775 223:3201 End of report