IPv4 R&E Routing Table Report 23:05 GMT Wed 03 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: 1016354 Prefixes after maximum aggregation (per Origin AS): 393084 Deaggregation factor: 2.59 Unique aggregates announced (without unneeded subnets): 504208 Number of IPv4 prefixes with a valid ROA: 596909 Number of IPv4 prefixes with an invalid ROA: 677 Number of IPv4 prefixes with no ROA: 418768 Total ASes present in the Internet Routing Table: 77497 Prefixes per ASN: 13.11 Origin-only ASes present in the Internet Routing Table: 66411 Origin ASes announcing only one prefix: 27085 Transit ASes present in the Internet Routing Table: 11086 Transit-only ASes present in the Internet Routing Table: 548 Paths with bogon ASNs present in the IPv4 Routing Table: 19 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: 964 Number of instances of unregistered ASNs: 993 Number of 32-bit ASNs allocated by the RIRs: 48125 Number of 32-bit ASNs visible in the Routing Table: 39374 Prefixes from 32-bit ASNs in the Routing Table: 217806 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: 439 Number of addresses announced to Internet: 3100613632 Equivalent to 184 /8s, 207 /16s and 156 /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: 332673 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 274843 Total APNIC prefixes after maximum aggregation: 80654 APNIC Deaggregation factor: 3.41 Prefixes being announced from the APNIC address blocks: 262294 Unique aggregates announced from the APNIC address blocks: 106202 APNIC Region origin ASes present in the Internet Routing Table: 14869 APNIC Prefixes per ASN: 17.64 APNIC Region origin ASes announcing only one prefix: 4503 APNIC Region transit ASes present in the Internet Routing Table: 1999 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: 10451 Number of APNIC addresses announced to Internet: 753007104 Equivalent to 44 /8s, 225 /16s and 250 /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: 297348 Total ARIN prefixes after maximum aggregation: 134345 ARIN Deaggregation factor: 2.21 Prefixes being announced from the ARIN address blocks: 297115 Unique aggregates announced from the ARIN address blocks: 145581 ARIN Region origin ASes present in the Internet Routing Table: 19363 ARIN Prefixes per ASN: 15.34 ARIN Region origin ASes announcing only one prefix: 7114 ARIN Region transit ASes present in the Internet Routing Table: 1924 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: 5420 Number of ARIN addresses announced to Internet: 1337500416 Equivalent to 79 /8s, 184 /16s and 163 /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: 281953 Total RIPE prefixes after maximum aggregation: 139793 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 282910 Unique aggregates announced from the RIPE address blocks: 183860 RIPE Region origin ASes present in the Internet Routing Table: 29097 RIPE Prefixes per ASN: 9.72 RIPE Region origin ASes announcing only one prefix: 12070 RIPE Region transit ASes present in the Internet Routing Table: 4045 Average RIPE Region AS path length visible: 4.9 Max RIPE Region AS path length visible: 54 Number of RIPE region 32-bit ASNs visible in the Routing Table: 12835 Number of RIPE addresses announced to Internet: 735992320 Equivalent to 43 /8s, 222 /16s and 90 /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: 125722 Total LACNIC prefixes after maximum aggregation: 30754 LACNIC Deaggregation factor: 4.09 Prefixes being announced from the LACNIC address blocks: 121637 Unique aggregates announced from the LACNIC address blocks: 49695 LACNIC Region origin ASes present in the Internet Routing Table: 11316 LACNIC Prefixes per ASN: 10.75 LACNIC Region origin ASes announcing only one prefix: 2664 LACNIC Region transit ASes present in the Internet Routing Table: 2558 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: 9311 Number of LACNIC addresses announced to Internet: 170720256 Equivalent to 10 /8s, 44 /16s and 252 /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: 35524 Total AfriNIC prefixes after maximum aggregation: 6887 AfriNIC Deaggregation factor: 5.16 Prefixes being announced from the AfriNIC address blocks: 51959 Unique aggregates announced from the AfriNIC address blocks: 18493 AfriNIC Region origin ASes present in the Internet Routing Table: 1995 AfriNIC Prefixes per ASN: 26.04 AfriNIC Region origin ASes announcing only one prefix: 734 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: 103164160 Equivalent to 6 /8s, 38 /16s and 41 /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 13264 8729 120 CHINAMOBILE-CN China Mobile Communication 7545 6046 835 591 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4589 541 336 BBIL-AP BHARTI Airtel Ltd., IN 18403 4407 347 24 FPT-AS-AP FPT Telecom Company, VN 7552 4012 1332 28 VIETEL-AS-AP Viettel Group, VN 7713 3712 1044 66 TELKOMNET-AS-AP PT Telekomunikasi Indones 56046 3335 828 182 CMNET-JIANGSU-AP China Mobile communicati 45899 3321 1869 100 VNPT-AS-VN VNPT Corp, VN 24560 2949 865 501 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 17561 2587 163 595 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 14265 37209 5400 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 3307 4861 485 GOOGLE-CLOUD-PLATFORM, US 749 3216 54766 2467 DNIC-AS-00749, US 16625 2858 1224 2144 AKAMAI-AS, US 36352 2824 231 909 AS-COLOCROSSING, US 174 2675 8767 848 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 7289 1711 149 UNI2-AS, ES 39891 4833 298 66 ALJAWWALSTC-AS, SA 9009 3991 375 2282 M247, RO 20940 3861 3394 124 AKAMAI-ASN1, NL 12389 3152 2317 869 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2538 180 1838 CDNEXT, GB 34984 2422 363 576 TELLCOM-AS, TR 8452 1662 1852 14 TE-AS TE-AS, EG 203020 1613 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 12691 3301 571 UNINET, MX 10620 3458 463 1101 Telmex Colombia S.A., CO 13999 2505 509 348 Mega Cable, S.A. de C.V., MX 11830 1992 369 65 Instituto Costarricense de Electricidad y 28573 1372 2432 263 Claro NXT Telecomunicacoes Ltda, BR 3816 1345 778 213 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1265 371 22 Telefonica del Peru S.A.A., PE 22884 1055 67 362 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1017 2486 56 TIM SA, BR 18881 919 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 1924 368 14 RAYA-AS, EG 36992 1681 1509 399 ETISALAT-MISR, EG 24863 1262 389 20 LINKdotNET-AS, EG 36903 1250 554 97 MT-MPLS, MA 37069 1085 1096 13 MOBINIL, EG 29571 1072 94 22 ORANGE-COTE-IVOIRE, CI 36935 1054 521 33 Vodafone-, EG 20011 580 154 212 NTT-DATA-Inc, ZA 36914 571 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 14265 37209 5400 AMAZON-02, US 9808 13264 8729 120 CHINAMOBILE-CN China Mobile Communication 8151 12691 3301 571 UNINET, MX 12479 7289 1711 149 UNI2-AS, ES 7545 6046 835 591 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 4589 541 336 BBIL-AP BHARTI Airtel Ltd., IN 18403 4407 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 13264 13144 CHINAMOBILE-CN China Mobile Communications Grou 8151 12691 12120 UNINET, MX 12479 7289 7140 UNI2-AS, ES 7545 6046 5455 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 4767 ALJAWWALSTC-AS, SA 22773 4777 4410 ASN-CXA-ALL-CCI-22773-RDC, US 18403 4407 4383 FPT-AS-AP FPT Telecom Company, VN 9498 4589 4253 BBIL-AP BHARTI Airtel Ltd., IN 7552 4012 3984 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 /15:2090 /16:13649 /17:8162 /18:13411 /19:24664 /20:44471 /21:51922 /22:112744 /23:104937 /24:638066 /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 6870 12691 UNINET, MX 12479 6219 7289 UNI2-AS, ES 11492 3559 4715 CABLEONE, US 39891 3521 4833 ALJAWWALSTC-AS, SA 6327 3478 3691 SHAW, CA 22773 3050 4777 ASN-CXA-ALL-CCI-22773-RDC, US 7155 2820 3861 VIASAT-SP-BACKBONE, US 16509 2432 14265 AMAZON-02, US 30036 2312 2655 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2213 3458 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 2:1537 3:973 4:10 5:4946 6:189 7:6 8:1500 9:6 11:172 12:1231 13:571 14:2612 15:414 16:303 17:388 18:913 20:586 21:4 22:188 23:8070 24:2561 25:2 27:2788 29:19 31:3387 32:31 33:1 34:84 35:286 36:4596 37:4561 38:9395 39:1185 40:445 41:4420 42:1949 43:2875 44:399 45:19554 46:5084 47:386 49:2153 50:2049 51:597 52:1567 54:289 55:1104 56:11 57:300 58:2319 59:1326 60:1166 61:3090 62:3088 63:1737 64:5958 65:2129 66:5910 67:3231 68:1498 69:4180 70:1031 71:618 72:3045 74:2920 75:1516 76:599 77:2772 78:1916 79:1782 80:2300 81:2095 82:3817 83:1455 84:2023 85:3647 86:1103 87:2152 88:1341 89:4570 90:840 91:8435 92:2837 93:3006 94:4222 95:4557 96:1446 97:311 98:952 99:775 100:68 101:1347 102:4329 103:32679 104:5517 105:778 106:906 107:2806 108:1196 109:4245 110:2314 111:3909 112:2784 113:1935 114:2095 115:2260 116:2164 117:3130 118:3034 119:2087 120:2372 121:1500 122:2936 123:2277 124:1650 125:2927 126:125 128:1577 129:959 130:1497 131:2249 132:765 133:462 134:1621 135:490 136:1498 137:1136 138:2902 139:1593 140:1724 141:1551 142:2344 143:2140 144:1350 145:630 146:2180 147:2142 148:2784 149:2880 150:1314 151:2623 152:2263 153:763 154:9149 155:2257 156:4370 157:2226 158:1464 159:2685 160:3662 161:1989 162:3989 163:2320 164:1963 165:2605 166:1303 167:2149 168:3887 169:796 170:5453 171:1118 172:4484 173:3418 174:911 175:1355 176:3773 177:4749 178:4296 179:2292 180:2977 181:4319 182:3836 183:2599 184:2041 185:21672 186:5518 187:4767 188:4455 189:4508 190:9711 191:1586 192:11409 193:9490 194:7852 195:5607 196:3265 197:3303 198:6059 199:6089 200:8068 201:6383 202:10432 203:10511 204:4612 205:3663 206:4366 207:3751 208:4252 209:5388 210:4716 211:2677 212:4888 213:4003 214:1031 215:53 216:7076 217:3384 218:1581 219:406 220:2193 221:1283 222:775 223:3183 End of report